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Chapter 4: The Structure of the Atom

4.1 Early Theories of Matter
Philosophers - Greek ( fire, earth, air, water, Aristotle, Democritus - atom )
19th Century - John Dalton ( atom ), Alchemy

4.2 Subatomic Particles and the Nuclear Atom
Electron, proton, neutron, cathode ray tube, Millikan, J.J. Thompson, Rutherford
( alpha particle, gold foil ) nucleus, Chadwick ( neutron )

4.3 How Atoms Differ
Atomic number, Moseley
atomic number = # protons = # electrons
isotopes and mass number, atomic mass unit ( AMU )

4.4 Unstable Nuclei and Radioacive Decay
Radioactivity, nuclear reactions, radiation
Types of radiation, alpha a ( 2+ ), gamma ? ( no charge ),
beta ß ( 1- )

  Homework
Section 4.1 Early Theories of Matter
  1. 10/21/2019 Atomic Structure worksheet
Section 4.2 Subatomic Particles of Matter
  1. 10/22/2019 Use PhET animation to show complete symbols for elements Be, Li, O, N, K, & F. Show atomic #, mass #, charge (if not zero). Use today's simulation used in class on Chromebooks.
  2. 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr
  3. 10/23/2019 video notes on Structure of the Atom & its history, - Discovering the Electron, The Nuclear Atom - 1.5 - 2 pages
Section 4.3 How Atoms Differ
  1. 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr
  2. 10/28/2019 Page 113 #72 (draw the chart completely & fill it in.
  3. 10/29/2019 MOGIL - Isotopes, pages 1 & 2. This link will take you to all of the pages of the POGIL we started today. We will do more of this POGIL tomorrow.
Section 4.4 Unstable Nuclei and Radioactive Decay
  1. 10/31/2019 Practice Problems for Radioactive Decay 19-26 (all letters)
  In Class Assignments
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  Standards
  Tests and Quizes
  Tutorials
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