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Chapter 14-2.

vocabulary

TermDefinition
radiometric dating method of determining the absolute age of an object by comparing the relitive percetages of a radioactive isotope and a stable isotope
isotope atoms of the same element that differ in the number of neutrons they contain
mass number total number of protons and neutrons in the nucleus
radioactive decay process by which unstable nuclei release particles or radiant energy or both until the nuclei become stable
radioactive isotope isotopes with unstable nuclei
half-life length of time it takes one-half of any size sample of an isotope to decay to a stable from
microsphere spherical in shape and are composed of many protein molecules that are orginized as a membrane and coacervates
coacervate collections of droplets that are composed of molecules of different types including lipids amino acids and sugars
Created by: mccuddenm16
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