sb - atomic structure 2015.notebookmsromanscience.weebly.com/uploads/2/3/1/4/23140796/...quiz #1:...
TRANSCRIPT
SB Atomic Structure 2015.notebook
1
September 24, 2015
Unit 2: Atomic StructureImportant Dates
Quiz #1: Wednesday, 10/1Quiz #2: Monday, 10/5Homework Packet: Monday, 10/5Exam (Free Response): Wednesday, 10/7Exam (Multiple Choice): Thursday, 10/8
Obscertainer Activity
Take a handout and an"obscertainer"
Do Now:
Can you figure out the inner structure of your "obscertainer"?
How do you study something that you cannot see?
What Is An Atom?"Atom" comes from the word "atomos,"
which means "indivisible".
Democritus400 B.C.
All matter is composed of tiny particles called
"atoms."
https://www.youtube.com/watch?v=AsyxOWx5CE4
Early History of the Atom POGIL Activity
You should be able to...ü Explain the similarities and differences between four early models of the atom.
ü Analyze and interpret the results of Thomson‛s Cathode Ray Experiment and Rutherford‛s Gold Foil Experiment.
ü Draw the atom of an element as it would appear in Dalton‛s model, Thomson‛s model, and Rutherford‛s model.
PART 1: John Dalton's Billiard Ball Modelnanocars
SEMatomic-sized electronic devices, like circuits and computer chips
nanoscale technology
medicinecommunications
space exploration
https://www.youtube.com/watch?v=IibY5H8p2jg
https://www.youtube.com/watch?v=XZVH7CASrBk
https://www.youtube.com/watch?v=WOqEk440JZ8
SB Atomic Structure 2015.notebook
2
September 24, 2015
A Boy & His AtomPeriod 4 Closure
Period 5 Do NowPART 2: J.J. Thomson's Plum Pudding Model
1:57
‐ 4
:35
https://www.youtube.com/watch?v=FWxd78sOZ8
PART 3: Ernest Rutherford's G0ld Foil Experiment
PART 3: Ernest Rutherford's G0ld Foil Experiment
Rutherford's prediction basedon Thomson's "Plum Pudding" model
Rutherford's observations during his Gold Foil Experiment
SB Atomic Structure 2015.notebook
3
September 24, 2015
PART 2: J.J. Thomson's Cathode Ray Tube Experiments
Rutherford Used Radioactive Samples in his Experiments
HW Packet - Top of pg. 4
Bottom of pg. 3
Aim: What is the inner structure of an atom?
Do Now: Define: Nucleus, Nucleons, Atomic #, Mass #
You Are HERE.
? ?
The AtomThe smallest particle of an element that has
the properties of that element
Reference Table ____Characteristics of Subatomic Particles
Location Charge Mass
Protons
Neutrons
Electrons
Vocabulary of the Periodic Table
Atomic Mass: Average mass of all the isotopes of an element(Mass Number: protons + neutrons)
Atomic Number: The number of protons in every atom of an element(Can also represent the number of electrons in a neutral atom.)
Electron Configuration:The number of electrons in each energy level; add the numbers to get the total number of electrons.
Element Symbol: The letter(s) used to identify an element
Oxidation Numbers: Possible charges an atom of an element can have
Vocabulary of the Periodic Table
Protons: _____________
Neutrons: ____________
Electrons: ____________
SB Atomic Structure 2015.notebook
4
September 24, 2015
Vocabulary of the Periodic Table Do Now: Review of Early Atomic Theories
Aim: How does changing subatomic particles affect atoms?
Changing # of protons?
Changing # of neutrons?
Changing # of electrons?
Changes atomic number Changes mass
number
Changes atom's identity
Changes atom's chargeChanges mass
number
Neutron
Proton
Electron
Hydrogen Atom
+
Neutron
Proton
Electron
+
Carbon Atom
SB Atomic Structure 2015.notebook
5
September 24, 2015
Neutron
Proton
Electron
+
Oxygen Atom
Lab: Modeling Atoms, Ions, & Isotopes
Partners:Sydnie & Ali
Aarthi & Sam L.Brittany F. & JasonJang Hun & DanRob & VincentJoe & Sunreet
Ashley K. & Brittany M.Ashley L. & Sam Galu
Kyung Jin & BlakeMin Su & HunterMin Woo & Olivia
Amanda &
Stop after completing this page!
SB Atomic Structure 2015.notebook
6
September 24, 2015
Neutron
Proton
Electron
+
Sodium Fluorine
Neutron
Proton
Electron
+
Sodium Chlorine
https://www.youtube.com/watch?v=VBReOjo3ri8
SB Atomic Structure 2015.notebook
7
September 24, 2015
Neutron
Proton
Electron
Carbon12 and Carbon14Isotopes
+
Aim: Can you explain why atomic mass is not an integer?
Do Now:1. What element is represented by "protium"?
2. What is the difference between protium, deuterium, and tritium?
3. What term can be used to describe these three atoms?
ISOTOPES:Atoms of the same element with the same number
of protons, but different numbers of neutrons
heaviest
lightest
intermediate
Example: Chlorine has two isotopes which have an average atomic mass of
35.453 amu: Cl-35 and Cl-37
Calculating Average Atomic MassTry it:
Naturally occurring chlorine that is put in pools is 75.53% 35Cl (mass = 34.969 amu) and 24.47% 37Cl (mass = 36.966 amu).
Calculate the average atomic mass.
Calculating Average Atomic MassOn Your Own...
SB Atomic Structure 2015.notebook
8
September 24, 2015
Calculating Average Atomic MassOn Your Own...
How a Mass Spectrometer Works
Rapid Fire! Rapid Fire!
SB Atomic Structure 2015.notebook
9
September 24, 2015
Rapid Fire! Rapid Fire!