Nuclear Knockout
(100) What type of radiation consists of two protons and two neutrons?
What is alpha radiation?
(100) Complete the decay reaction:
226/88Ra --> _____ +222/86Rn
What is 42He?
(100) If you start with 100 grams of a substance and it has a half-life of 10 years, how much will remain after 10 years?
Answer: What is 50 grams?
(100) What is the name of the isotope produced when Uranium-238 undergoes alpha decay?
Answer: What is Thorium-234?
(100) Rank the three types of radiation from least penetrating to most penetrating.
Alpha, Beta, Gamma.
(200) What type of radiation is a high-energy photon?
What is gamma radiation?
(200) Identify the type of decay:
130/52Te --> 0/-1e + 130/53I
Answer: What is beta decay?
(200) How many half-lives occur in 40 years for a substance with a half-life of 10 years?
Answer: What is 4 half-lives?
(200) Name an isotope with a half-life of 5730 years.
Answer: What is Carbon-14?
(200) Why can alpha particles be stopped by paper?
They are larger and have less energy.
(300) What is the process in which an unstable atomic nucleus loses energy by emitting radiation?
What is radioactive decay?
(300) What is produced when Radon-222 undergoes alpha decay?
Answer: What is Polonium-218?
(300) If a 750 g sample of Technetium-99 decays in 4 half-lives, how much will remain?
Answer: What is 46.875 grams?
(300) What is the daughter isotope formed when Thallium-208 undergoes alpha decay?
Answer: What is Gold-204?
(300) What is the main difference between fission and fusion?
Fission splits heavy nuclei, while fusion combines light nuclei.
(400) Which type of radiation can penetrate human skin but can be stopped by aluminum?
What is beta radiation?
(400) In beta decay, what happens to the number of protons in the nucleus?
Answer: It increases by 1.
(400) The half-life of Iodine-131 is 8.10 days. How many half-lives occur in 24.3 days?
Answer: What is 3 half-lives?
(400) Write the equation for the alpha decay of Plutonium-244.
244/94Pu → 4/2He + 240/92U
(400) Define transmutation in nuclear chemistry.
It is the conversion of one chemical element into another.
What is the term for the time required for half of a sample of a radioactive substance to decay?
What is half-life?
(500) Write the balanced decay reaction for the beta decay of Carbon-14:
14/6C --> 0/-1e + 14/7N
(500) How much of a 144 g sample of Carbon-14 will remain after 17,190 years? The half-life of carbon is 5730 years.
Answer: What is 18 g? (After 3 half-lives)
(500) Name the particle emitted during the decay of 47/20 Ca to 47/21 Sc.
Answer: What is a beta particle?
(500) What is the main process that powers the sun?
What is nuclear fusion?