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Question 11.Rochelle has been experiencing fatigue, depression, and has had difficulty concentrating. Her physician believes she has an underperforming thyroid and wants to run some tests. Iodine-131 will be used to study the activity of Rochelle's thyroid. This substance is an example of _____.
Question 22.How many elements are there?
Question 33.What is the energy required to break a nucleus into its individual nucleons called?
Question 44.The nucleus of an atom:
Question 55.Which of the following is a correct definition of an element?
Question 66.A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?
Question 77.Becky was recently diagnosed with an aggressive brain tumor. Her oncologist recommended treating the tumor with cobalt-60 due to its precision with treating this type of cancer. This substance is being used for _____.
Question 88.When polonium-218 decays, it emits a beta particle, followed by an alpha particle. The resulting isotope is:
Question 99.Which of the following is a definition of matter?
Question 1010.Which element has a mass number of 12 and contains 6 neutrons?
Question 1111.Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, then how many half-lives passed?
Question 1212.The mass number indicates:
Question 1313.During a nuclear reaction, mass is lost. Which of the following does this result in?
Question 1414.If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?
Question 1515.The difference between the mass of the nucleus and the sum of each individual nucleon is:
Question 1616.ALL atoms of the same element have:
Question 1717.Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds?
Question 1818.Despite human skin providing protection against alpha particles, why is it dangerous to ingest alpha particles?
Question 1919.What is the product of a cobalt-60 atom that undergoes two beta decays?
Question 2020.The formation of uranium-236 from plutonium-240 occurs by:
Question 2121.Which of the following is really just a high-energy electron?
Question 2222.The type of nuclear power that occurs when a heavier atom splits into smaller pieces, which is the most common on Earth is known as _____.
Question 2323.Two artifacts have recently been discovered. After testing, it is found that Artifact A has 20% of carbon-14 in it, while Artifact B has 35% of carbon-14 in it. Which of the two artifacts is the OLDEST?
Question 2424.Which of the following can be shielded by a piece of paper?
Question 2525.An element undergoes gamma decay to form lead-206. What was the identity of that initial element?
Question 2626.Which of the following has a mass of 1 and an atomic number of 1?
Question 2727.A 6.95 gram sample of radioactive nobelium-259 has a half-life of 58 min. How much is left after 2 hours and 54 minutes?
Question 2828.When neptunium-238 decays, it emits two alpha particles, a beta particle, and a gamma particle. The resulting isotope is:
Question 2929.If a substance has a half-life of 5 years, then how much of the initial sample remains after 15 years?
Question 3030.The equation E = mc2 shows that a small amount of mass creates _____.
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