4. Half Life Natural Transmutation Artificial Transmutation Radioactive Particles Good/Bad/ Ugly $ 200 $ 200$200 $ 200 $400 $ 400$400 $ 400 $600 $ 600$600 $ 600 $ 600 $800 $ 800$800 $ 800 $ 800 $ 1000$1000 $ 1000 $ 1000 $ 1000

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6. Final Jeopardy Final Jeopardy Category

7. Final Jeopardy answer question

8. $200 half life The amount of time it takes for a radioactive sample to decay to ½ of itself original mass is called_____

9. $400 50% If a radioactive sample goes through 1 half life, what percent of the sample is left?

10. $600 1/16 = 6.25% A sample goes through 4 half lives. What fraction of the sample remains? What percent remains?

11. $800 K-42 Looking at Table N, what radioisotope has a half life of 12.36 hours

12. $1000 15g 60g sample of N-16 goes through 2 half lives, how much of N-16 would remain?

13. $200 False True or False: A radioactive particle gets bombarded by a particle in natural transmutation

14. $400 14 7 N 14 6 C  0 -1 e + ________

15. $600 4 2 He 230 90 Th  _____ 226 88 Ra

16. $800 19 10 Ne _____  0 +1 e + 19 9 F

17. $1000 37 19 K 37 20 Ca  0 +1 e + _______

18. $200 True True or False: A radioactive particle gets bombarded by a particle in artificial transmutation

19. $400 Fusion Name this type of AT is 2 1 H + 1 1 H  4 2 He + 2 1 1 H + energy

20. $600 Alpha is positive and so is the nucleus, they want to repel Why was an alpha particle have to bombard a nucleus at really high speeds?

21. $1000 141 58 Ce or Ce-141 A barium-137 atom is bombarded with an alpha particle. What isotope is formed? HINT: 137 Ba + 4 2 He  _______

22. $200 4 2 He draw the notation for an alpha particle

23. $800 Fission Name this type of AT 235 92 U + 1 0 n  143 Ba + 90 Kr + 3 1 0 n + energy

24. $400 0 -1 e draw the notation for a B - (beta)

25. $600 0 +1 e draw the notation for the B + (positron)

26. $800 gamma or neutron This particle does not affect the atomic number

27. $1000 Gamma, no charge This particle does not affect the atomic number or the mass number, what is its charge

28. $200 U-235 This isotope is used for making atomic bombs

29. $400 C-14 This isotope is usually used for relative dating of fossils (carbon dating)

30. $600 Mold (spores) and bacteria Foods are irradiated to kill these

31. $800 cancer treatment, energy, treating food Name one good use of radioactive isotopes

32. $1000 C-14 p=6 and n=8 Not a 1 to 1 ratio of protons to neutrons C-14 vs N-14 Only one is radioactive…Which one and why?

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68. Daily Double 10g The half-life of K-42 is 12.4 hours. How much of a 320g sample is left after 62 hours

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71. The Jeopardy champion!