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Nuclear Chemistry - ORELA Middle Grades General Science 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. What spectral classification of stars is the hottest?

Question 2 2. Which of the following is really just a high-energy electron?

Question 3 3. Why must the temperature be so high for nuclear fusion to begin?

Question 4 4. Why is nuclear power thought to be a 'climate friendly' form of energy?

Question 5 5. Despite human skin providing protection against alpha particles, why is it dangerous to ingest alpha particles?

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Question 6 6. What is the difference between carbon-13 and carbon-14?

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. What is it that causes the temperature inside a forming star to increase?

Question 9 9. Isotopes are

Question 10 10. What is the spectral order of stars from hottest to coolest?

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Question 11 11. When does nuclear fusion occur?

Question 12 12. What spectral classification is the least common?

Question 13 13. What spectral classification is our sun?

Question 14 14. Which of the following has no mass and does not change the composition of the nucleus?

Question 15 15. What is the term for a nuclear reaction in which a large nucleus is split into smaller nuclei?

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Question 16 16. How does a nuclear reaction differ from a chemical reaction?

Question 17 17. What is the term used to describe an accident that involves severe overheating of the nuclear reactor?

Question 18 18. Which of the following has a mass of 1 and an atomic number of 1?

Question 19 19. Which particles are present in the nucleus of an atom?

Question 20 20. A typical hydrogen nucleus consists of a:

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Question 21 21. Which of the following is Yucca Mountain in Nevada known for?

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

Question 24 24. Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds?

Question 25 25. Who first coined the term atom, meaning indivisible?

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Question 26 26. Which of the following was the instrument used for the discovery of the electron?

Question 27 27. 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 28 28. Which type of reaction is involved with nuclear reactors?

Question 29 29. A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?

Question 30 30. Which of the following terms describes an illness caused by exposure to a large dose of radiation over a short period of time?

Nuclear Chemistry - ORELA Middle Grades General Science 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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