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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 Substances a sample of matter, either a single element or 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 does have a uniform structure or composition throughout
Solid The state of matter in which the volume and shape of a substance is fixed
Liquid The state of matter which the volume is definite but not a definite shape
Gas The form of matter that does not have a definite shape or volume
Freezing A change of state from a liquid to a solid
Melting A change of state from a solid to a liquid
Evaporation A change of state from a liquid to a gas from a wide range of temperature
Boiling A change of state from a liquid to gas from a specific temperature
Condensation A change of state from a gas to a liquid
Sublimation The change from a solid directly to a gas
Deposition The change from a gas directly to a solid
Created by: Papi ChoCho
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