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| Anything that has mass and occupies space. |
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| the study of matter how matter changes |
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Definition
| a puresubstance that cannot be broken down into substance by chemical or physical means |
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Definition
| the smallest basic particle from which all elements are made |
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Definition
| ususally one-or-two letter set of characters that is used to identify an element |
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Definition
| a pure substance made of two or more elements chemically combined. |
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Definition
| a combination of symbols that represents the elements in a compound and their proportions. |
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| Two or more substances that are mixed together but not chemically combined. |
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Definition
| A change theat alters the form or apperance of a substance but does not change its identity |
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