1. Nuclear Chemistry

2. Hiroshima Nagasaki

3. Nuclear Fission : splitting of the atom into different parts

4. Nuclear Fusion: nuclear particles combining releasing energy

5. How the bomb works Critical mass

6. How a Nuclear Power Plant works

7. Nuclear Decay Particles Comes out of the nucleus Alpha: Beta: Positron: Gamma Ray: Neutron: Worksheet: balancing nuclear equations

9. Half-Life Nuclear Decay Students tear a piece of paper 1 st half life = ½½ 2 nd half life = ¼ ¾ 3 rd half life = 1/87/8 4 th half life = 1/1615/16 Amount of sample left Amount of sample gone

10. Ws. 1. The half-life of polonium-210 is 138.4 days. How many milligrams of polonium-210 remain after 415.2 days if you start with 2.0 mg of the isotope? 2. Assuming a half-life of 1599 years, how many years will be needed for the decay of 15/16 of a given amount or radium- 226?

11. 3.The half-life of radon-222 is 3.824 days. After what time will one-fourth of a given amount of radon remain? 4.A sample contains 4.0mg of uranium-238. After 4.46x10 9 years, the sample will contain 2.0mg of uranium-238. What is the half-life of uranium-238?

12. 5.A sample contains 16mg of polonium-218. After 12 minutes the sample will contain 1.0mg of polonium-218. What is the half-life of polonium- 210? 6.If you start with 2.97 x 10 22 atoms of Molybdenum- 91, how many atoms will remain after 62.0 minutes? The half-life of Mo-91 is 15.49 minutes.

13. 7. 8. 9. 10.