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S8P1.b

Describe the difference between pure substances (elements and compounds

TermDefinition
Pure substance 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 bonds
molecule the smallest unit of a substance that keeps all physicaland chemical properties of that substance
Chemical formula a combination of chemical symbols and numbers to represent a 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 substance
Mixture a combination of two or more substances that are not chemically combined
Created by: 39ajadav
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