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Chapter16 Vocabulary
Physical Science Vocabulary
| Question | Answer |
|---|---|
| Radioactivity | The process by which the an unstable nucleus gives off nuclear radiation |
| Mass Number | The sum of the numbers of protons and neutrons in the nucleus of an atom |
| Isotope | An atom that has the same number of protons (or the same atomic number) as other atoms of the same element do but that has a different number of neutrons (and thus a different atomic mass) |
| Nuclear Fission | The splitting of the nucleus of a large atom into two or more fragments; releases additional nuetrons and energy |
| Nuclear Chain Reaction | A continuous series of nuclear fission reactions |