1. Unit 3 Nuclear Chemistry Board Race Review Radioactive Decay Decay SeriesHalf-LifeGrab Bag O’ Fun Reactors 11111 22222 33333 44444 55555

2. Name that particle I can change a neutron into a proton I have a negative charge My symbol is 

3. What type of decay is being shown?

4. What is the change in atomic mass when an atom emits a gamma particle?

5. Lab coats and goggles would provide shielding from what type of radiation?

6. What type of decay is shown below?

7. What is the product of the alpha decay of Rn-220?

8. What particle is released when Ga-75 decays to Ge-75?

9. What other product occurs when Ac-222 releases an alpha particle?

10. Write the equation that shows the beta decay of uranium-237

11. What is the ending particle in the following decay series? Cf-251 undergoes alpha decay The daughter under goes alpha decay The daughter under goes beta decay The daughter under goes alpha decay

12. Iodine-131 has a half-life of 8 days. How many grams of I-131 in a 4.0-g sample remain after 24 days?

13. Phosphorus-32 has a half-life of 14 days. How long will it take for the P- 32 sample to decay to one-fourth of its original level?

14. An 80-mg sample of technetium-99 is used for a diagnostic test. If Tc-99 has a half-life of 6.0 hr, how much of the Tc-99 sample remains radioactive after 24 hours?

15. Polonium-218 has a half-life of 3.0 minutes. How long will it take a sample to decay to one-eighth its original mass?

16. The half-life of radium-226 is 1,600 years. How many milligrams of radium-226 remain after 8,000 years if the parent sample is 5.000 mg?

17. List the three subatomic particles and list their masses in amu.

18. In each of the following sets of mystery elements, determine which species are isotopes. a. 80 35 X, 82 35 X, 81 36 X b. 19 9 X, 19 10 X, 17 9 X, 20 8 X c. 23 11 X, 24 11 X, 25 11 X d. 70 31 X, 70 32 X, 70 33 X, 70 34 X

19. Determine the isotopic symbol for the following: An isotope of chlorine in which A = 37

20. What type of decay is occurring in each of the steps below?

21. If only 25% of the carbon-14 remains, how old is the material containing the carbon-14?

22. Fill in the blanks!

24. What is the roll of the control rods in a nuclear fission reactor?

25. What is required for a nuclear reaction to run at critical mass? a.Very high temperatures b.A corrosive environment c.A particle to collide with a nucleus d.Spontaneous nuclear decay e.Gamma emission

26. What drives the turbine in a nuclear reactor?