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Chpt.16 vocab
chapter 16 vocab
Question | Answer |
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radioactivity | the process by which some nuclei give off nuclear radiation |
mass number | the sum of the numbers of protons and neutrons in the nucleus of an atom |
isotopes | are atoms that have the same number of protons as other atoms of the same element do but that have different numbers of neutrons |
half-life | the amount of time it takes one-half of the nuclei of a radioactive isotope to decay |
nuclear fission | the process by which a large nucleus splits into two small nuclei and releases energy |
nuclear chain reaction | a continuous series of nuclear fission reactions |
nuclear fusion | two or more nuclei that have small masses combine, or fuse, to form a larger nucleus |