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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 of atoms of two or more different elements joind by a chemical bond
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 or physical properties
Heterogeneous describes something that does not have a uniform structure or composition throughtout
Homogeneous describes something that has a uniform structure or composition throughtout
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 state from a 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 temperature
Condensation the change of state from a gas to a liquid
Sublimation the change of state from a solid directly to a gas
Deposition the change of state from a gas directly to a solid
Created by: GoldenCooler
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