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describe the difference between pure substances(element and compound)and mixture

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 bonds
molecule- the smallest unit of a substance that keeps all of the physical and 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: 78chaker
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