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8th GRADE SCIENCE

Chap 2 Vocabulary Quiz 1

TermDefinition
sublimation this occurs when a solid substance turns directly into a vapor becoming a liquid first
matter anything that occupies space and has a mass
pure substance materials made of just one kind of particle
mixture combinations of two or more pure substances
state of matter solid, liquid, or gas
temperature the form of energy that usually determines a substance's state of matter
solid forms when the attraction between particles is greater than their ability to move away from each other
liquid forms when particles of a substance can move around but are still close together
gas when particles are far apart and move very fast
plasma the state of matter in the sun; acts like a gas but has charged electrically charged particles
melting when warm temperatures move particles of a solid far apart forming a liquid
freezing (solidification) when particles slow down until their attraction to each other locks them into a fixed position
vaporization the change from a liquid state to a vapor
boiling happens when vaporization happens so fast that bubbles form in a liquid
evaporation if vaporization occurs over a long period of time at temperatures below the boiling point of that liquid
condensation forms when gas particles clump together as temperatures drop and a liquid forms
sublimation this occurs when a solid substance turns directly into a vapor without becoming a liquid first
deposition particles in the vapor state can collect on cool surfaces without becoming a liquid first
Created by: biobob
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