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Review Questions. 1. The atomic number indicates __________. A. the number of neutrons in a nucleus B. the total number of neutrons and protons in a nucleus C. the number of protons in a neutral atom D. the number of atoms in 1 g of an element. 1. The atomic number indicates __________. - PowerPoint PPT PresentationTRANSCRIPT
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1. The atomic number indicates __________.
A. the number of neutrons in a nucleus B. the total number of neutrons and
protons in a nucleus C. the number of protons in a neutral
atom D. the number of atoms in 1 g of an
element
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1. The atomic number indicates __________.
A. the number of neutrons in a nucleus B. the total number of neutrons and
protons in a nucleus C. the number of protons in a neutral
atom D. the number of atoms in 1 g of an
element
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2. Who is responsible for discovering the neutron?
A. RutherfordB. ChadwickC. ThomsonD. None of the above
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2. Who is responsible for discovering the neutron?
A. RutherfordB. ChadwickC. ThomsonD. None of the above
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3. In the symbol, x 6C, x is __________.
A. the number of neutronsB. the atomic numberC. the mass number D. the isotope number
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3. In the symbol, x 6C, x is __________.
A. the number of neutronsB. the atomic numberC. the mass number D. the isotope number
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4. Which scientist’s form of organizing the periodic table was called the “Law of Octaves”?
A. MendeleevB. MoseleyC. Dobereiner D. Newlands
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4. Which scientist’s form of organizing the periodic table was called the “Law of Octaves”?
A. MendeleevB. MoseleyC. Dobereiner D. Newlands
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5. Which isotope has 45 neutrons?
A. 8036Kr
B. 8035Br
C. 7834Se
D. 3417Cl
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5. Which isotope has 45 neutrons?
A. 8036Kr
B. 8035Br
C. 7834Se
D. 3417Cl
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6. A sample of element X contains 90% X-35 atoms, 8.0% X-37 atoms, and 2.0% X-38 atoms. The average atomic mass will be closest to which value?
a. 35c. 37b. 36d. 38
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6. A sample of element X contains 90% X-35 atoms, 8.0% X-37 atoms, and 2.0% X-38 atoms. The average atomic mass will be closest to which value?
a. 35c. 37b. 36d. 38
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7. The size of an element’s atomic radius __________ from left to right across the periodic table.
a. increasesb. decreasesc. remains constantd. is randomly assigned
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7. The size of an element’s atomic radius __________ from left to right across the periodic table.
a. increasesb. decreasesc. remains constantd. is randomly assigned
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8. Arrange the following elements from lowest to highest ionization energy: Be, Mg, Ca, Rb, Sr
a. Be, Mg, Ca, Rb, Srb. Rb, Sr, Ca, Be, Mgc. Rb, Sr, Ca, Mg, Bed. Be, Mg, Ca, Sr, Rb
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8. Arrange the following elements from lowest to highest ionization energy: Be, Mg, Ca, Rb, Sr
a. Be, Mg, Ca, Rb, Srb. Rb, Sr, Ca, Be, Mgc. Rb, Sr, Ca, Mg, Bed. Be, Mg, Ca, Sr, Rb
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9. How many electrons are in an Iron atom?
A. 23
B. 26
C. 27
D. 28
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9. How many electrons are in an Iron atom?
A. 23
B. 26
C. 27
D. 28
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10. An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?
a. 30
b. 56
c. 26
d. 82
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10. An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?
a. 30
b. 56
c. 26
d. 82
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11. In the Plum Pudding Model, the plums are _________, while the pudding is ___________.
a. positive, negative
b. negative, positive
c. positive, positive
d. negative, negative
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11. In the Plum Pudding Model, the plums are _________, while the pudding is ___________.
a. positive, negative
b. negative, positive
c. positive, positive
d. negative, negative
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12. Clorine (Cl) is best described as a
a. Nonmetal
b. Metalloid
c. Metal
d. Semimetal
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12. Clorine (Cl) is best described as a
a. Nonmetal
b. Metalloid
c. Metal
d. Semimetal
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13. All atoms of an element have the same
a. number of neutrons
b. atomic number
c. atomic mass
d. mass number
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13. All atoms of an element have the same
a. number of neutrons
b. atomic number
c. atomic mass
d. mass number
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14. An element consists of two isotopes. The abundance of one isotope is 95.72% and its atomic mass is 114.9041. The atomic mass of the second isotope is 112.9043. What is the average atomic mass of the element?
a. 113.9
b. 113.0
c. 112.9
d. 114.8
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14. An element consists of two isotopes. The abundance of one isotope is 95.72% and its atomic mass is 114.9041. The atomic mass of the second isotope is 112.9043. What is the average atomic mass of the element?
a. 113.9
b. 113.0
c. 112.9
d. 114.8
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15. How many protons are in the nucleus of an atom of beryllium?
a. 2b. 9c. 4d. 5
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15. How many protons are in the nucleus of an atom of beryllium?
a. 2b. 9c. 4d. 5
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16. Of Fe, K, P, and Cl, which would you expect to have the greatest electron affinity?
a. K
b. Fe
c. Cl
d. P
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16. Of Fe, K, P, and Cl, which would you expect to have the greatest electron affinity?
a. K
b. Fe
c. Cl
d. P
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17. What scientists is called the ‘Father of the Periodic Table”?
a. Moseley
b. Rutherford
c. Millikan
d. Mendeleev
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17. What scientists is called the ‘Father of the Periodic Table”?
a. Moseley
b. Rutherford
c. Millikan
d. Mendeleev
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18. What do Lithium and Berrylium have in common?
a. In the same group
b. In the same period
c. Same number of electrons
d. Same number of protons
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18. What do Lithium and Berrylium have in common?
a. In the same group
b. In the same period
c. Same number of electrons
d. Same number of protons
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19. Which symbols represent atoms that are isotopes?
a. C-14 and N-14
b. O-16 and O-18
c. I-131 and I-131
d. Rn-222 and Ra-222
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19. Which symbols represent atoms that are isotopes?
a. C-14 and N-14
b. O-16 and O-18
c. I-131 and I-131
d. Rn-222 and Ra-222
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20. Who has been your best science teacher?
a. Ms. Swopes
b. Ms. Swopes
c. Ms. Swopes
d. Cierra C. Swopes
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20. Who has been your best science teacher?
a. Ms. Swopes
b. Ms. Swopes
c. Ms. Swopes
d. Cierra C. Swopes