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13 Cards in this Set
- Front
- Back
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matter
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anything that has mass and takes up space
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element
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a substance that cannot be broken down into simpler substances
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molecule
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smallest unit of a substance that behaves like the substance.
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atom
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the smallest unit of an element that maintains the chemical properties of that element
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compound
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a substance made up of atoms of different elements
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pure substance
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matter that has a fixed composition and definite properties
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mixture
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a combination of substances that are not chemically combined
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Melting point
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the temp at which the substance changes from a solid to a liquid
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boiling point
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the tmp at which a liquid changes into a gas
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density
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the ratio of the mass of a substance to the volume of the substance
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reactivity
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is the capacity of a substance to combine chemically with another substance.
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physical change
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a change of matter from one form to another
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chemical change
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a change that occurs when one or more substances change into an entirely new substances wt different properties
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