Complete the table below about the three main types of radiation

Name: ___________________________________________________ Period: ___ Date: ____________________
Radioactivity Test Practice

1. What happens in radioactive decay?

2. How does a nuclear reaction differ from a chemical reaction?

3. Complete the table below about the three main types of radiation.

Type of Radiation	Symbol	Mass #	Atomic #	What Occurs?	What Stops it?
ALPHA
BETA
GAMMA

Name the type of emission in each nuclear change. (ALPHA, BETA, or GAMMA)
4. Uranium-234 To Thorium-230
5. Thorium-230 to Radium-226
6. Radium-226 to Radon-222
7. Radon-222 to Polonium-218
8. Polonium-218 to Lead-214
9. Lead-214 to Bismuth-214
10. Bismuth-214 to Polonium-214

DEFINE:

11. Radioisotope –

12. Parent isotope –

13. Daughter isotope –

14. Fission –

15. Fusion –
Use your periodic table to determine the daughter element formed after each type of radiation is emitted from the parent isotope. You may write a nuclear decay equation if you wish.
Alpha Decay:
1. Polonium-218
2. Polonium-214
3. Polonium-210
4. Radium-224
5. Radium-220




Beta Decay:
6. Lead-210
7. Lead-214
8. Bismuth-210
9. Bismuth-212
10. Bismuth-214

Radioactive Decay of Cs-137

Half-Life

Use the graph to the right to answer the following:
11. How long is the half-life of Cesium-137?

12. If 200 grams of Cs-137 had been decaying for

90 years, how much Cs-137 would be left?

13. After 4 half-lives of decay, how much of a 1000 gram

sample of Cs-137 would be left?

14. How much time passes after 4 half-lives of decay

of Cs-137?