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4 Cards in this Set
- Front
- Back
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atoms |
An atom is the basic particle from which elements are made |
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elements |
an element is a pure substance that can not be broken down by physical of chemical means |
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molecules |
group of 2 or more atoms held together by chemical bonds |
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compounds |
a compound is a pure substance made up of two or more elements chemically combined in a ration |
