Intro to Matter 2
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Created by:
dianahutchis on November 13, 2010
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16 terms
Terms | Definitions |
|---|---|
 pure substance | An element or compound; has definite physical and chemical properties |
| mixture | A combination of two or more substances that are not chemically combined |
| chemical formula | Shows the elements in a compound and the ratio of atoms |
| physical property | A property of a substance that can be observed without any chemical change taking place. |
| physical change | A change in the form or appearance of a sustance, but not its chemical composition. |
| chemical property | A characteristic of a pure substance that describes its ability to change into a different substance with a different chemical composition. Can only be observed during the change. |
| chemical change | A change in the chemical composition of one or more substances, producing one or more new substances. The result of a chemical reaction. |
| solubility | The ability of a substance to dissolve. |
| homogeneous mixture | A mixture in which substances are evenly distributed throughout and you can't see the separate ingredients (it all looks the same). |
| heterogeneous mixture | A mixture in which pure substances are unevenly distributed and you can see the separate ingredients. |
| solution | A mixture that one substance dissolves another: The the most homogeneous mixtures. |
| oxidation | A chemical change in which a substance reacts with oxygen, as when iron rusts. |
| combustion | A rapid reaction between oxygen and fuel that results in fire. |
| tarnishing | The slow reaction of a bright metal with sulfur and substances in the air, producing a dark coating on the metal. |
| malleability | The ability of a material to deform under pressure and stay deformed. |
| conductivity | The ability of a substance to conduct heat or electricity. |
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