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15 Cards in this Set
- Front
- Back
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matter
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the physical material of the universe, anything that has a mass and takes up space
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property
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any characteristic that allows us to recognize a particular type of matter and distinguish it from the rest.
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element
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over a hundred very basic or elementary substances that combine to create the great variety of matter in the universe
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atoms
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the almost infinitesimally small building blocks of matter
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molecules
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two or more atoms joined together in specific shapes
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states of matter
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physical state of matter, gas, liquid, solid
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composition
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element, compound, mixture
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pure substance
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matter that has distinct properties and a composition that doesn't vary from sample to sample.
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element and compound
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element one particular type of atom, compound two or more kinds of elements
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mixtures
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combinations of two or more substances in which each substance retains its own chemical identity
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law of constant composition or law of definite proportions
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observation that the elemental composition of a pure compound is always the same
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physical properties
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can be measured without changing the identity and composition of the substance.
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chemical properties
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describe the way a substance may cahge, or react, to form other substances. example: flammability
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intensive properties
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do not depend on the amount of the sample being examines
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extensive properties
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depend on the quantity of the sample (mass and volume)
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