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S8P1.b
Describe the difference between pure substances (e and c) and mixtures
Term | Definition |
---|---|
Chemical Symbol | a one- or two-letter code that represents an element |
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 element in the substance |
Mixture | a combination of two or more substances that are not chemically combined |