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Unit 1.2

Science

TermDefinition
atom the smallest unit of an element that maintains the properties of that element
element a substance that cannot be separated or broken down into simpler substances by chemical means
compound a substance made up of atoms of two or more different elements joined by chemical bonds
mixture a combination of two or more substances that are not chemically combined
pure substance a sample of matter either a single element or a single compound, that has definite chemical and physical properties
heterogeneous describes something that does not have a uniform structure or composition throughout
homogeneous describes something that has a uniform structure or composition throughout
solid the state of matter in which the volume and shape of a substance are fixed
liquid the state of matter that has a definite volume but not a definite shape
gas a form of matter that does not have a definite volume or shape
freezing the change of the state of liquid to a solid
melting the change of state from a solid to a liquid
evaporation the change of state from a liquid to a gas that usually occurs at the surface of a liquid over a wide range of temperatures
boiling the change of state from a liquid to a gas that occurs at a specific temperatures
condensation the change of state from gas to a liquid
sublimation the change of state from a solid directly to a gas
deposition the change of a state from a gas directly to a solid
Created by: themegabrodude
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