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

Category 1Category 2Category 3Category 4Category 5Category 6 $ 400 $ 400 $ 400 $ 400 $ 400 $ 400 $ 800 $ 800 $ 800 $ 800 $ 800 $ 800 $ 1200 $ 1200 $ 1200 $ 1200 $ 1200 $ 1200 $ 1600 $ 1600 $ 1600 $ 1600 $ 1600 $ 1600 $ 2000 $ 2000 $ 2000 $ 2000 $ 2000 $ 2000

Final Jeopardy Final Jeopardy Category

Final Jeopardy answer question

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

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

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

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

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

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

$ N 14 6 C  0 -1 e + ________

$ He Th  _____ Ra

$ Ne _____  0 +1 e F

$ K Ca  0 +1 e + _______

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

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

$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?

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

$ He draw the notation for an alpha particle

$800 Fission Name this type of AT U n  143 Ba + 90 Kr n + energy

$ e draw the notation for a B - (beta)

$ e draw the notation for the B + (positron)

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

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

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

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

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

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

$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?

$200 answer question

$400 answer question

$600 answer question

$800 answer question

$1000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

$400 answer question

$800 answer question

$1200 answer question

$1600 answer question

$2000 answer question

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

Daily Double answer question

Daily Double answer question

The Jeopardy champion!