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Lakeside High School

Dekalb County Schools

Unit 2

Unit 2: Week 1

Monday, September 18
Bell Work:
   1. List components of an atom 
   2. Draw a picture of the atomic structure: 
 
Tuesday, September 19
Bell Work:
1. What atomic model did JJ Thompson create?
2. Who discovered the nucleus?
 
 
Wednesday, September 20
Bell Work:
1. Who discovered neutrons?
2. Who believed atoms were indivisible and indestructible
 
 
Thursday, September 21
Bell Work:
Find the neutrons, protons and electrons for the following isotopes:
Chlorine-37
Boron-12
Sulfur- 33
 
 
Friday, September 22 
Bell Work:
Find the average atomic mass given the following:
Li-4, mass: 4.023, abundance: 89%
Li-8, mass: 8.450, abundance: 11%
 

Week 2

Monday, September 25
 
Bell Work:
 
Find the neutrons, protons, eletrons, atomic mass, atomic number, and istopic notation for the following:
Bromine
Xenon
 
Fission and Fusion book activity 
Tuesday, September 26
 
Bell Work
 
What are the three types of radioactive decay and their respective charges?
1.
2.
3.
 
Homework:
Finish worksheet
Study for quiz tomorrow!
 
Wednesday, September 27
 
Bell Work
Write an equation for the alpha decay of K-24 and Se-80
 
Quiz: atoms, isotopes, ions, average atomic mass
 
Thursday, September 28 
 
Bell Work
Write an equation for the beta decay of K-24 and Se-80
 
Friday, September 29
 
Bell Work: Half life of Zinc is 2.4 minutes.  How long will it take for a sample of zinc to decay to 1/16 of the original amount of zinc in each sample? 
 
Homework: have a great weekend!! 

Week 3

Monday, October 2
 
Bell Work:
Write the nuclear equation for the alpha decay of N-14 and Se-79.
 
Due Wednesday
 
Homework: work on review guide and study for Wednesday's test
 
Tuesday, October 3
 
Bell Work:
The half life of Ra is 3.66 days. What was the original mass if 0.5 grams remains after 7.32 days?
 
 
Homework: work on review guide and study for test
 
Wednesday, October 4
 
Bell Work:
What type of ray would be attracted to a negatively charged sheet of metal?
 
Unit 2 Test