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Homework exercises on Nuclear Reactions for a Physical Science course. Also refer to atomic energy, reactor, bomb, isotopes, Uranium, Einstein, radioactivity, WBT, courseware, Ron Kurtus, School for Champions. Copyright © Restrictions

Nuclear Reactions - Homework

INSTRUCTIONS: Print out a copy of this homework assignment, answer the questions correctly, and send the homework to your instructor. (Refer to Nuclear Reactions or your text book for answers.)

YOUR NAME:

1. Why don't protons in a nucleus repel each other?

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2. Why isn't the atomic weight of an atom exactly the total of the number of protons and neutrons?

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3. How much does each electron add to the atomic weight?

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4. Why are there usually more neutrons than protons in the nucleus?

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5. What is an isotope?

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6. What determines if a nucleus is unstable?

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7. What happens to an unstable nucleus?

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8. How is the rate of decay of an unstable nucleus measured?

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9. What practical application is there of knowing the half-life of an unstable isotope?

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10. What particles and rays are emitted from a radioactive nucleus?

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11. Is radioactivity harmful to people? Why or why not?

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12. Why is Uranium radioactive?

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13. What happens when Uranium-235 is struck by a neutron?

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14. How does a nuclear chain reaction occur?

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15. How do they control a nuclear chain-reaction?

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