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Chapter 16 vocab
Atomic Energy
Question | Answer |
---|---|
Radioactivity | The process by which an unstable nuclear gives off nuclear radiation. |
Mass Number | The sum of the numbers of protons and nuetrons in the nucleus of an atom. |
Half-life | The time needed for half of a sample of a radioactive substance to undergo radioactive decay. |
Nuclear Fission | The splitting of the nucleus of a large atom into two or more fragments; releases additional neutrons and energy |
Nuclear Chain Reaction | A continuous series of nuclear fission reactions |
Nuclear Fusion | The combination of nuclei of small atoms to form a larger nucleus; realeases energy |