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S8P1.b
Describe the difference between pure substances
| Term | Definition |
|---|---|
| Chemical Symbol | A one or two-letter code that represents an element |
| Pure Substances | 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 an 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 |
| Mixture | A combination of two or more substances that are not chemically combined |