Term
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Definition
| The process in which an unstable atomic nucleus emits charged particles and energy. |
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Term
| Radioisotope (Radioactive Isotope) |
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Definition
| Any atom containing an unstable nucleus. |
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Term
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Definition
| Charged particles and energy that are emitted from the nuclei of radioisotopes. |
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Term
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Definition
| A positively charged particle made up of 2 protons and 2 neutrons (the same as a helium nucleus). |
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Term
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Definition
| An electron emitted by an unstable nucleus. |
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Term
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Definition
| A penetrating ray of energy emitted by an unstable nucleus. |
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Term
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Definition
| Nuclear radiation that occurs naturally in the environment. |
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Term
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Definition
| The time required for 1/2 of a sample of a radioisotope to decay. |
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Term
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Definition
| The conversion of atoms of one element to atoms of another element. It involves a nuclear change, not a chemical change. |
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Term
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Definition
| Elements with atomic numbers greater than 92 (Uranium). |
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Term
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Definition
| A subatomic particle theorized to be among the most basic units of matter. |
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Term
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Definition
| The attractive force that binds protons and neutrons together in the nucleus. |
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Term
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Definition
| The splitting of an atomic nucleus into 2 smaller parts. |
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Term
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Definition
| A series of nuclear fissions triggered by the the release of neutrons during the splitting of an intitial nucleus. |
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Term
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Definition
| The smallest possible mass of a fissionable material that can sustain a chain reation. |
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Term
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Definition
| A process in which the nuclei of 2 atoms combine to form a larger nucleus. |
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Term
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Definition
| A state of matter in which atoms have been stripped of their electrons. |
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