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S8P1.b
Term | Definition |
---|---|
Pure subsatance | a sample of matter,either a single element or a single compound,that has a definate chemical and physical preperties |
compound | a substance made up of atoms of two or more different elements joined by chemicals bonds |
molecule | the smallest unit of a substance that keeps all of the physical and chemicals properties of a substance |
chemical formula | a combination of chemical symbols and numbers to represent a substance |
subscript | a small number written adn slightly belowa chemical symbol to tell the number of atoms of that element in that substance |
mixture | a combination of two or more substances that are not chemically combined |