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Nuclear Chemistry MCQ

Nuclear Chemistry

1. Decaying uranium atoms in earths crust result in _____.

Answer

Correct Answer: Radon gas

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2. A transmutation reaction must always involve a(n) ____.

Answer

Correct Answer: Change in the number of protons in a nucleus of an atom

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3. Radioisotopes taken internally for medical reasons ____.

Answer

Correct Answer: Should have a short-half life

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4. An unstable nucleus ____.

Answer

Correct Answer: Emits energy as it decays.

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5. A sample of ch4o with a mass of 32.0 g contains __________ molecules of ch4o.

Answer

Correct Answer: 6.02 × 10^23

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6. A nuclear change involves a change in _____.

Answer

Correct Answer: An atom

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7. An ongoing series of fission reactions is called a (n) _____.

Answer

Correct Answer: Chain reaction

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8. An element that undergoes radioactive decay becomes _________.

Answer

Correct Answer: An entirely different element

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