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Modern Physics & Nuclear Physics 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. Despite human skin providing protection against alpha particles, why is it dangerous to ingest alpha particles?

Question 2 2. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

Question 3 3. During a nuclear reaction, mass is lost. Which of the following does this result in?

Question 4 4. A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?

Question 5 5. Which of the following is really just a high-energy electron?

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Question 6 6. Consider an object approaching the speed of light. Which of the following is accurate?

Question 7 7. 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 8 8. 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 9 9. When an electron moves from an excited state to a ground state, it will _____.

Question 10 10. If a substance has a half-life of 5 years, then how much of the initial sample remains after 15 years?

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Question 11 11. The equation E = mc2 shows that mass and energy are:

Question 12 12. The difference between the mass of the nucleus and the sum of each individual nucleon is:

Question 13 13. 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 14 14. The Bohr model of the atom:

Question 15 15. The equation E = mc2 shows that a small amount of mass creates _____.

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Question 16 16. Which of the following has a mass of 1 and an atomic number of 1?

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. When a larger particle is broken down into component parts, the sum of the masses of the component parts is slightly less than the mass of the larger particle. Which of the following accounts for this?

Question 19 19. Einsteins equation for the relativity of mass and energy suggests that ...

Question 20 20. Which of the following is an example when an electron absorbs energy?

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Question 21 21. If an object could achieve the speed of light, what would be its mass at the speed of light?

Question 22 22. Which of the following expressions is accurate?

Question 23 23. Which of the following symbols represents the speed of light?

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

Question 25 25. 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 _____.

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Question 26 26. 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 27 27. What is the energy required to break a nucleus into its individual nucleons called?

Question 28 28. Which of the following has no mass and does not change the composition of the nucleus?

Question 29 29. Why should you avoid looking directly at magnesium burning?

Question 30 30. 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?

Modern Physics & Nuclear Physics Chapter 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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