Term
| The unit of radioactivity expressed in disintegration per second is called the _______. |
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Definition
| curie. One curie of radioactive substance undergoes 3.7 x 1010 disintergrations per second |
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Term
| T or F. Radioactive elements can be used to produce an electric charge. |
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Definition
| True. Unstable radioactive nuclei can emit charged particles such as -1e0 electrons and 2He4+ alpha particles. |
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Term
| High temperature plasmas are used in the production of nuclear _________. |
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Definition
| fusion. One problem of fusion is obtaining a self-sustaining reaction. Confining gases of hydrogen isotopes requires high temperatures which strip hydrogen of their electrons and form plasmas. |
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Term
| T or F. A beta particle is the result of a conversion of a neutron into a proton. |
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Definition
| True. 0n1>1p1 + -1e0 (a beta particle) |
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Term
| Matter with a half-life of two days is tested after six days. What fraction of the sample was decayed. |
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Definition
| 7/8. After six days, 1/2 of the 1/4 or 1/8, remains, which means 7/8 of the original was decayed. |
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