![Page 1: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/1.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 2: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/2.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 3: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/3.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 4: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/4.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 5: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/5.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 6: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/6.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 7: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/7.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 8: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/8.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 9: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/9.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 10: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/10.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 11: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/11.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 12: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/12.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 13: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/13.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 14: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/14.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 15: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/15.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 16: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/16.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 17: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/17.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 18: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/18.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 19: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/19.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 20: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/20.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 21: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/21.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 22: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/22.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 23: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/23.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 24: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/24.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 25: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/25.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 26: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/26.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 27: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/27.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 28: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/28.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 29: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/29.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 30: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/30.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 31: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/31.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 32: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/32.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 33: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/33.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 34: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/34.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 35: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/35.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 36: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/36.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 37: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/37.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 38: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/38.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 39: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/39.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 40: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/40.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 41: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/41.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 42: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/42.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 43: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/43.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 44: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/44.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 45: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/45.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 46: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/46.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 47: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/47.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 48: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/48.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 49: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/49.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 50: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/50.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 51: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/51.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 52: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/52.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 53: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/53.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 54: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/54.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 55: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/55.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 56: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/56.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 57: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/57.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 58: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/58.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 59: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/59.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 60: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/60.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 61: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/61.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 62: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/62.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 63: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/63.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 64: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/64.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 65: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/65.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 66: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/66.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 67: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/67.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 68: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/68.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 69: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/69.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 70: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/70.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 71: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/71.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 72: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/72.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 73: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/73.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 74: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/74.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 75: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/75.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 76: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/76.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 77: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/77.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 78: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/78.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 79: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/79.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 80: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/80.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 81: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/81.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 82: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/82.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 83: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/83.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 84: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/84.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 85: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/85.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 86: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/86.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 87: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/87.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 88: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/88.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 89: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/89.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 90: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/90.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 91: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/91.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 92: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/92.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 93: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/93.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 94: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/94.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 95: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/95.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 96: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/96.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 97: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/97.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 98: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/98.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 99: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/99.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 100: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/100.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 101: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/101.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 102: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/102.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 103: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/103.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 104: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/104.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 105: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/105.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 106: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/106.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 107: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/107.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 108: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/108.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 109: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/109.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 110: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/110.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 111: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/111.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 112: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/112.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 113: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/113.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 114: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/114.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 115: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/115.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 116: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/116.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 117: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/117.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 118: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/118.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 119: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/119.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 120: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/120.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 121: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/121.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 122: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/122.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 123: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/123.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 124: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/124.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 125: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/125.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
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Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 131: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/131.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 133: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/133.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 135: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/135.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 136: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/136.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 137: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/137.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 138: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/138.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 139: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/139.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 140: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/140.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 141: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/141.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 142: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/142.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 143: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/143.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 145: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/145.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 146: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/146.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 147: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/147.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 149: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/149.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 150: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/150.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 151: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/151.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 153: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/153.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 154: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/154.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 155: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/155.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 156: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/156.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 157: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/157.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 158: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/158.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 159: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/159.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 160: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/160.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 161: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/161.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 163: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/163.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 164: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/164.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 165: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/165.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 166: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/166.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 167: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/167.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 168: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/168.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 169: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/169.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 170: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/170.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 171: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/171.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 172: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/172.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 173: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/173.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 174: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/174.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 175: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/175.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 176: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/176.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 177: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/177.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 178: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/178.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 179: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/179.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 181: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/181.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 182: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/182.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 183: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/183.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 184: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/184.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 185: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/185.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 186: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/186.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 187: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/187.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 188: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/188.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 189: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/189.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 190: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/190.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 191: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/191.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 192: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/192.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 193: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/193.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 194: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/194.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 195: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/195.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 196: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/196.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 197: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/197.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 199: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/199.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 201: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/201.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 202: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/202.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 203: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/203.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 205: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/205.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 206: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/206.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 207: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/207.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 208: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/208.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 209: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/209.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 210: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/210.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 211: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/211.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 212: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/212.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 213: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/213.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 214: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/214.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 217: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/217.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 219: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/219.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 221: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/221.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 223: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/223.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 224: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/224.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 225: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/225.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 226: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/226.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 227: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/227.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 228: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/228.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 229: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/229.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 230: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/230.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 231: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/231.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 232: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/232.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
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Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 234: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/234.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 235: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/235.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 237: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/237.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 238: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/238.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 239: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/239.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 240: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/240.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 241: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/241.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 242: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/242.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 243: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/243.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 244: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/244.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 245: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/245.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 246: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/246.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 247: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/247.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 248: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/248.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 249: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/249.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 250: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/250.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 253: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/253.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 255: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/255.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 256: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/256.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 257: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/257.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 258: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/258.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 259: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/259.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 260: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/260.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 261: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/261.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 262: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/262.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 263: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/263.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 264: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/264.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 265: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/265.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 266: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/266.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 267: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/267.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 268: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/268.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
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Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 270: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/270.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 271: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/271.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 272: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/272.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 273: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/273.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 274: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/274.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 275: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/275.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 276: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/276.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 277: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/277.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 278: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/278.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 279: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/279.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 280: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/280.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 281: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/281.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 282: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/282.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 283: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/283.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 284: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/284.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 285: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/285.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 286: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/286.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 287: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/287.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 288: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/288.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 289: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/289.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 290: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/290.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 291: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/291.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 292: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/292.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 293: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/293.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 294: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/294.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 295: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/295.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 296: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/296.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 297: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/297.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 298: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/298.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 299: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/299.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 300: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/300.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 301: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/301.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 302: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/302.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 303: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/303.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 304: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/304.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 305: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/305.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 306: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/306.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 307: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/307.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 308: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/308.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 309: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/309.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 310: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/310.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 311: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/311.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 312: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/312.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 313: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/313.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 314: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/314.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 315: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/315.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 316: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/316.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 317: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/317.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 318: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/318.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 319: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/319.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 320: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/320.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 321: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/321.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 323: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/323.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 325: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/325.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 327: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/327.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 328: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/328.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 329: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/329.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 330: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/330.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 331: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/331.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 332: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/332.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 333: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/333.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 334: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/334.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 335: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/335.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 336: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/336.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 337: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/337.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 338: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/338.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 339: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/339.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 341: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/341.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 342: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/342.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 343: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/343.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 344: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/344.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 345: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/345.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 346: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/346.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 347: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/347.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 348: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/348.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 349: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/349.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 350: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/350.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 351: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/351.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 352: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/352.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 353: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/353.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 354: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/354.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 355: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/355.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 356: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/356.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 357: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/357.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 358: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/358.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 359: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/359.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 360: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/360.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 361: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/361.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 362: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/362.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 363: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/363.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 364: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/364.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 365: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/365.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 366: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/366.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 367: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/367.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 368: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/368.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 369: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/369.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 370: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/370.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 371: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/371.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 372: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/372.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 373: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/373.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 374: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/374.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 375: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/375.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 376: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/376.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 377: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/377.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 378: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/378.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 379: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/379.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 380: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/380.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 381: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/381.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 382: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/382.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 383: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/383.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 384: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/384.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 385: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/385.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 386: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/386.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 387: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/387.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 388: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/388.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 389: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/389.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 390: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/390.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 391: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/391.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 392: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/392.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 393: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/393.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 394: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/394.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 395: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/395.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 396: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/396.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 397: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/397.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 398: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/398.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 399: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/399.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 400: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/400.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 401: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/401.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 402: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/402.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 403: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/403.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 404: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/404.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 405: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/405.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 406: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/406.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
![Page 407: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/407.jpg)
4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 408: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/408.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
![Page 409: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/409.jpg)
Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
![Page 410: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/410.jpg)
Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
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Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
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Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________
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Subatomic Particle Gizmo Name _________________________Sci # _____
Some of the greatest breakthroughs in understanding the structure of the atom were provided by J. J.
Thompson during his time at the renowned Cavendish Laboratory in Cambridge, England. Thompson had a
reputation for being rather clumsy with his hands, and he always needed to have assistants to set up
equipment for him. Nevertheless, he was a brilliant experimental physicist. Work conducted under his watchful
eye led to the first discovery of a subatomic particle, the electron.
Once you log in, find the GIZMO named “Element Builder” Gizmo and select “Launch Gizmo.”
Location of Subatomic Particles
1. In this Gizmotm, subatomic particles (protons, neutrons and electrons) can be added to an atom or
removed from it by clicking the arrows next to each supply of particles. Remove any protons (the
program will not let you remove the last proton), neutrons, or electrons that are currently in the atom
by clicking the left arrows. You can also highlight the number with the cursor and change the numbers
manually. Below is what the screen should look like when you begin. The center of the atom is the
nucleus and the area around the nucleus is the electron cloud.
a. Using the right arrows, add 1 proton, 2 neutrons, and 2 electrons to the atom so that there are
2 of each of the three particles located in the atom. Fill in the following chart.
Particle Location
Proton
Neutron
Electron
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Identity of the Atom
2. Place a check in the “Show element name” box, which is in the top right portion of the gizmo.
Manipulate the number of protons to achieve the number of protons in the data table. Do not worry
about the number of neutrons or electrons. Experiment with adding one and removing one proton to
and from the atom. Fill in the following table. Once you have the identity of the element, look at the
periodic table and write down the atomic number for the element, this is the larger number located by
the element symbol.
Number of protons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of protons change the identity of the element you have built?
b. What is the relationship between the number of protons and the atomic number for an
element?
3. Now you will do the same thing as step 2 except you will be changing the number of neutrons. Make
sure that you begin with 2 each for the protons, neutrons, and electrons. Add one neutron to the atom
to place 3 neutrons in the atom. Record the name of the element and look at the periodic table to find
the atomic number. Next, take 2 neutrons away (a total of 1 should now be in the atom.) Again record
the name of the atom and the atomic number from the periodic table.
Number of neutrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of neutrons change the identity of the element you have built?
b. Does changing the number of neutrons change the affect the atomic number?
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4. Make sure that you have 2 each for the protons, neutrons, and electrons. Add one electron to the
atom to place 3 electrons in the atom. Record the name of the element and look at the periodic table
to find the atomic number. Next, take 2 electrons away (a total of 1 should now be in the atom.) Again
record the name of the atom and the atomic number from the periodic table.
Number of electrons Name of element Atomic Number from Periodic Table
2
3
1
a. Does changing the number of electrons change the identity of the element you have built?
KEY FACT: Now looking at questions 2a, 3a, and 4a, which subatomic particle is responsible for the identity of
an atom?
Mass of an atom
5. Build an atom again with exactly 2 protons, 2 neutrons, and 2 electrons. Check “Show element symbol.”
Be sure “isotope” is not selected. Make adjustments to the atom to attain the number of protons,
neutrons, and electrons as shown in the data table. Then finish filling in the table. The number to the upper left of the symbol indicates the mass of the atom. (See where the pointer is pointing in
the screen shot.)
Mass number Ignore
![Page 420: Subatomic Particle Gizmo · Location of Subatomic Particles 1. In this Gizmo tm, subatomic particles (protons, neutrons and electrons) can be added to an atom or removed from it by](https://reader034.vdocument.in/reader034/viewer/2022042517/5f463152c87f0053667d3315/html5/thumbnails/420.jpg)
Number of protons Number of neutrons Number of
electrons
Identity of atom
(give name)
Mass of atom
2 2 2
3 2 2
2 3 2
2 2 3
a. Does the proton affect the mass of an atom? You MUST EXPLAIN by referring to an example
or data from above .
b. Does the neutron affect the mass of an atom? You MUST justify your answer. You MUST
EXPLAIN by referring to an example or data from above.
c. Does the electron affect the mass of an atom? You MUST EXPLAIN by referring to an
example or data from above.
d. Looking at the atom in the Gizmo, where is most of the mass of an atom concentrated? Explain.
5. Which 2 subatomic particles affect the mass of an atom?
KEY FACT: Write a mathematical formula to show the relationship between the number of protons, the
number of neutrons, and the mass number for an atom.
SUMMARY: Based on this gizmo, the number of protons equals the _______________ ______________
from the periodic table. The number of protons determines the _______________ of an atom. The
____________ and _______________ determines the mass of an atom. The protons and neutrons are
located in the ________________ of an atom and electrons are in the ________________
______________.
• How many protons are in the nucleus of an atom of Carbon (C)? _________
• What is the formula for finding the mass number of an atom? _________
• If an atom of C has 7 neutrons in the nucleus, then it would have a mass number of _______ (see
previous 2 questions).
• How many electrons would be found in the nucleus? ________