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S8P1.b

describe the difference between pure substances and mixtures

TermDefinition
pure substances a sample of matter,either a single element or a single compound, that has definite chemical and physical properties
compound a substance made up of atoms of two or more different elements joined by chemical mass
molecule a smallest unit of substance that keeps all of the physical and chemical properties of that substances
chemical formula a combination of chemical symbols and numbers to representa substance
subscript a small number written to the right and slightly below a chemical symbol to tell the number of atoms of that element in the substances
mixture a combination of two or more substances that are not chemically combined
Created by: 90RobCol
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