Search Text

Select Year

### 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
Types of radiation, alpha a ( 2+ ), gamma ? ( no charge ),
beta ß ( 1- )

Homework
##### Section 4.1 Early Theories of Matter
 10/21/2019 Atomic Structure worksheet 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77 p. 115 - 1-4, 7-10 (5 pts) (17 questions)
##### Section 4.2 Subatomic Particles of Matter
 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. 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr 10/23/2019 video notes on Structure of the Atom & its history, - Discovering the Electron, The Nuclear Atom - 1.5 - 2 pages 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77 p. 115 - 1-4, 7-10 (5 pts) (17 questions)
##### Section 4.3 How Atoms Differ
 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr 10/28/2019 Page 113 #72 (draw the chart completely & fill it in. 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. 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77 p. 115 - 1-4, 7-10 (5 pts) (17 questions)
##### Section 4.4 Unstable Nuclei and Radioactive Decay
 10/31/2019 Practice Problems for Radioactive Decay 19-26 (all letters)
In Class Assignments
Lecture Notes
Standards
Tests and Quizes
Tutorials
Web Helps

Search HW by Day