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Inv. 1.2 & 1.3 Vocab

TermDefinition
air the mixture of gases surrounding the Earth
compress to push particles closer together
expand to get bigger
mass the amount of matter in an object or sample
matter anything that has mass and takes up space
particle an atom or a molecule; what everything is made of
pressure a continuous force applied to the surface of an object
state a kind or form of matter
weight the measurable pull or force between Earth and the matter in an object
atmosphere the layer of gases surrounding the Earth
permanent gas a gas in the atmosphere for which the amount stays constant
variable gas an atmospheric gas whose amount changes based on the environment
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