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6 terms

the motion of atoms and molecules in solids, liquids, and gases

solid, liquid, and gas
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solid
a three-dimensional shape, the state in which a substance has no tendency to flow under moderate stress
liquid
a substance in the fluid state of matter having no fixed shape but a fixed volume
gas
the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity
atom
(physics and chemistry) the smallest component of an element having the chemical properties of the element
molecules
groups of two or more atoms held together by chemical bonds
motion
the act of changing location from one place to another