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16 Cards in this Set
- Front
- Back
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Chemistry |
What things are made of, how they interact |
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Matter |
Everything that has mass and occupies space |
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Element |
A substance that cannot be broken down into simpler subastances |
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Atom |
smallest unit of an element |
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Compound |
a substance made of two or more atoms--chemically combined |
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molecule |
smallest unit of a compound |
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Chemical formula |
combination of chemical substance--makes pattern |
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pure substance |
sample of matter |
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mixture |
combination of two or more substances--not chemically combined |
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melting point |
point at which a substance melts |
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boiling point |
point at which liquid becomes a gas |
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density |
ratio of mass to sbstance |
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Reactivity |
The ability of a substance to combine chemically with another substance
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Flammabilty |
The ability of a substance to react in the presence of Oxygen and burn when exposed to a flame
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PHysycal CHange |
a change of matter from one form to another without a change in chemical properties
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Chemical Change |
a change that occurs when a substance changes its composition by forming 1 or more new substances
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