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MTEL Physics: Radioactive Decay & Nuclear Reactions Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. 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 2 2. How many elements are there?

Question 3 3. What is the energy required to break a nucleus into its individual nucleons called?

Question 4 4. The nucleus of an atom:

Question 5 5. Which of the following is a correct definition of an element?

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Question 6 6. A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?

Question 7 7. 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 8 8. When polonium-218 decays, it emits a beta particle, followed by an alpha particle. The resulting isotope is:

Question 9 9. Which of the following is a definition of matter?

Question 10 10. Which element has a mass number of 12 and contains 6 neutrons?

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Question 11 11. 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 12 12. The mass number indicates:

Question 13 13. During a nuclear reaction, mass is lost. Which of the following does this result in?

Question 14 14. 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 15 15. The difference between the mass of the nucleus and the sum of each individual nucleon is:

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Question 16 16. ALL atoms of the same element have:

Question 17 17. Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds?

Question 18 18. Despite human skin providing protection against alpha particles, why is it dangerous to ingest alpha particles?

Question 19 19. What is the product of a cobalt-60 atom that undergoes two beta decays?

Question 20 20. The formation of uranium-236 from plutonium-240 occurs by:

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Question 21 21. Which of the following is really just a high-energy electron?

Question 22 22. 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 23 23. 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 24 24. Which of the following can be shielded by a piece of paper?

Question 25 25. An element undergoes gamma decay to form lead-206. What was the identity of that initial element?

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Question 26 26. Which of the following has a mass of 1 and an atomic number of 1?

Question 27 27. 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 28 28. When neptunium-238 decays, it emits two alpha particles, a beta particle, and a gamma particle. The resulting isotope is:

Question 29 29. If a substance has a half-life of 5 years, then how much of the initial sample remains after 15 years?

Question 30 30. The equation E = mc2 shows that a small amount of mass creates _____.

MTEL Physics: Radioactive Decay & Nuclear Reactions Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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