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15 Cards in this Set
- Front
- Back
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compound
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made from 2 or more elements chemically combined
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mixtures
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a material made up of two or more substances that CAN be separated by physical means
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substance
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either an element or a compund (pure things you can't take apart)
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heterogeneous mixture
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a material in which different materials can be easily distinguished (by sight/microscope)
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solutions
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a mixture in which different materials dissolve; do not scatter light; dont settle
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homogeneous mixture
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material where two or more substances are evenly mixed
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colloids
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heterogemeous mixture that never settles; particles scatter light (Tyndall effect)
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suspensions
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heterogeneous mixture containing a liquid in which particles settle
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physical property
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any characteristic of a material that you can observe, without changing the identity of the material
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physical change
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change in size, shape, color weight, change in state
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chemical property
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characteristic of a substance that indicates whether it can undergo a certain chemical change
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chemical change
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the change of one substance to another type of substance
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law of conservation of mass
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the mass of all substances present before a chemical change equals the mass of all substances remaining after the change
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atom
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unit that makes up all matter
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element
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all atoms in a sample of matter that have the same identity
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