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describe the difference between pure substances(e and c) and mixtures
Term | Definition |
---|---|
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 tow or more different elements joined by chemical properties of that substance |
Molecules- | the smallest unit of a substance that keeps ll 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 |