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ch 16 ps vocab cards
atomic energy cards by alex yachem
Question | Answer |
---|---|
the process by which an unstable nucleus gives off nucleur 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 it takes for half of a sample of a radioactive substance to undergo radioactive decay | half-life |
the splitting of an atom into two smaller fragments releasing addittional neutrons and energy | nucleur fission |
a continuous series of nucleur fission reactions | nucleur chain reaction |
the combination of the nuclei of small atoms to form a larger nucleus releasing energy | nucleur fusion |