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1 | |
An alpha particle is the same as a __ nucleus. |
| | A) | H |
| | B) | He |
| | C) | Li |
| | D) | Be |
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2 | |
The slowest moving form of radiation is __ radiation. |
| | A) | alpha |
| | B) | beta |
| | C) | gamma |
| | D) | delta |
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3 | |
A beta particle is a(an)__ particle ejected from the nucleus. |
| | A) | proton |
| | B) | positron |
| | C) | electron |
| | D) | neutron |
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4 | |
When radioactive radon-222 emits an alpha particle, the remaining atom left behind is __. |
| | A) | bismuth |
| | B) | lead |
| | C) | polonium |
| | D) | astatine |
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5 | |
Most of the health damage associated with radiation is caused by __ radiation. |
| | A) | alpha |
| | B) | beta |
| | C) | gamma |
| | D) | delta |
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6 | |
Radioactive nuclides used in medicine must __. |
| | A) | have relatively short half lives |
| | B) | be beta emitters |
| | C) | be alpha emitters |
| | D) | be delta emitters |
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7 | |
Fission releases a large amount of energy because significant amounts of __ are converted to energy during such nuclear reactions. |
| | A) | gamma rays |
| | B) | beta particles |
| | C) | matter |
| | D) | alpha particles |
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8 | |
The nuclear reaction occurring on the sun is nuclear __. |
| | A) | diffusion |
| | B) | fission |
| | C) | fusion |
| | D) | decay |
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9 | |
What fraction of radioactive atoms remains in a sample after three half-lives? |
| | A) | 1/2 |
| | B) | 1/4 |
| | C) | 1/8 |
| | D) | 1/16 |
| | E) | 1/32 |
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10 | |
Cesium-134 is a ß emitter with a half-life of 2 years. How much of a 2.50 g sample of cesium-134 will remain after 10 years? |
| | A) | 0.500 g |
| | B) | 0.250g |
| | C) | 0.0781 g |
| | D) | 0.00244 g |
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11 | |
When Pb-210 decays by release of a beta particle, what isotope is formed? |
| | A) | Bi-209 |
| | B) | Bi-210 |
| | C) | Pb-209 |
| | D) | Tl-210 |
| | E) | Tl-209 |
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12 | |
The isotope 206Pb has |
| | A) | 82p, 124n, 82e |
| | B) | 124p, 82n, 82e |
| | C) | 124p, 82n, 124e |
| | D) | 82p, 82n, 124e |
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