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S8P1.b
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 two or more diffrent 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 |