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| a characteristic of a substance that can be observed without changing the substance into something else |
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| a characteristic that is observed when a substance changes into a different substance |
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| a substance that cannot be broken down into any other substances by chemical or physical means |
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| an element is represented by a one or two letter symbol...H or Fe or N |
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| a substance made of 2 or more elements that are chemically bound together in a set ratio |
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| shows the ratio of elements in the compound |
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| consists of 2 or more substances in the same place that are not chemically combined |
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| alters the form or appearance of a material but does not convert the material into a new substance |
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| a change in matter that forms one or more new substances |
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| a short simple way to describe a chemical reaction using symbols and formulas |
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| the substances you start with in a chemical reaction |
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| the substances you end with in a chemical reaction |
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| the smallest particle of an element |
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| a particle made of 2 or more atoms |
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| a force (glue) that holds atoms together |
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