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PS Chapter 16
Atomic Energy
| Question | Answer |
|---|---|
| The process by which an unstable nucleus gives off nuclear radiation | Radioactivity |
| The sum of the numbers of protons and neutrons in the nucleus of an atom | Mass Number |
| An atom that has the same number of protons as other atoms of the same element do but that has a different number of neutrons | Isotope |
| The time needed for half of a sample of a radioactive substance to undergo radioactive dec | Half Life |
| The splitting of the nucleus of a large atom into two or more fragments; releases additional neutrons and energy | Nuclear Fision |
| A continuous series of nuclear fission reactions | Nuclear Chain Reactions |
| The combination of the nuclei of small atoms to form a larger nuclus; releases energy | Nuclear Fusion |