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PSchaper 16

half life

QuestionAnswer
nuclear radiaton high energy particles and rays given off by the nuclei of some atoms
radioactivity the process by which an unstable nucleus gives off nuclear radiation
mass number The sum of teh numbers of protons and neutrons in the nucleus of an atom
isotope an atom that has the same number of protons as other atoms of the same element do but that has different number of neutrons
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 the nuclei of small atoms to form a larger nucleus; releases energy
Created by: kalyb123toga
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