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Describe the difference between pure substance ( e and c ) and mixtures
Term | Definition |
---|---|
pure substance | A sample of matter either a single compuond , that has definite chemical and physical properties. |
compound | A substance made up of atoms of two or more different elements joined by chemical bonds. |
chemical formula | the smallest unit of a substance that keeps all of the physical and chemical properties of that substance . |
subscript | a combination of chemical symbols and numbers to represent a substance . |
mixture | 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. |
A combination of two or more substance that are not chemically combined. |