1. Radioactivity, Half-life, and Nuclear Reactions
CH 19 & 20 Review
Radioactivity, Half-life, and Nuclear Reactions

2. Bell Work: 11/8/13
What atomic changes that occur during alpha decay? During beta decay?
What are the final products of alpha and beta decay?

3. Calculate the Amount of the element remaining…
The half-life of Unranium-235 is 70 years. If you have 15 grams to start with, how much will you have left in 350 years?

4. The half-life of Silver-108 is 418 years
The half-life of Silver-108 is 418 years. If the sample was 8 grams to begin with, how much would be left after 209 years?

5. The half-life of Sulfur-35 is 87 days
The half-life of Sulfur-35 is 87 days. If the sample was 50 grams to begin with, how much would be left after 1 year?

6. Practice alpha and beta decay…
Barium alpha decay

7. Chlorine alpha decay

8. Uranium Beta decay