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4 Cards in this Set
- Front
- Back
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Define, Radioactivity |
Radioactivity is defined as, the spontaneous disintegration of unstable atomic nuclides, accompanied by the emission of alpha particles, beta particles or gamma radiation. |
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Define, the Half Life of a Radioactive substance. |
The half life of a radioactive substance is defined as, the time taken for half of the unstable nuclides of a radioactive substance to decay or disintegrate. |
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Define, Isotopes |
Isotopes are defined as, atoms of an element that have the same atomic number but different mass numbers |
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Define, Radio-isotopes. |
Radio-isotopes are defined as, unstable nuclides which emit radiation |
