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describe thev difference between pure substances(e & a) 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 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 elements in the substance. |
Mixture | A combination of two or more substances that are not chemically combined. |