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BJU Physical Sci 8

BJU Physical Science - Ch 8 6th edition

TermDefinition
alpha decay A nuclear decay that results in the emission of an alpha particle.
beta decay A nuclear decay that results in the emission of a beta particle.
chain reaction A self-sustaining nuclear fission process in which neutrons produced in one fission reaction trigger more fission events.
critical mass The smallest mass of fissionable material that can sustain a chain reaction.
fission A nuclear reaction in which a large nucleus splits into smaller nuclei.
fusion A nuclear reaction in which small nuclei combine to form a more massive nucleus.
gamma decay A nuclear decay that results in the emission of gamma rays.
genetic damage Any damage done to DNA in cells that can affect growth and reproduction of the cells; can be passed to offspring if it occurs in reproductive cells.
half life The time in which half the atoms of a radio-active sample will probably decay.
radioactive decay The naturally occurring, spontaneous change of an unstable isotope to a more stable one by emitting particles or energy or both; also know as nuclear decay or radioactivity.
radiotracer A radioactive isotope used in nuclear medicine to study how an isotope moves through or collects in a certain organ or system.
somatic damage Any damage to cells that are not involved in reproduction, thus harming the organism but not any future offspring.
strong force An attractive force that holds protons and neutrons together in a nucleus.
Created by: marchscience
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