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15 Cards in this Set
- Front
- Back
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Physical changes
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alters form not idetity (melting ice)
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chemical changes
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loses identity, forms new substances, burning wood
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Mixtures
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2 or more substances not in specific proportions mixed togther
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Heterogenous
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not the same throughout (chocolate chip icecream)
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homogenoeous
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same throughout (vinalla icecream)
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pure substance
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one kind of substance, definate properties
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elements
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cannot be broken down into other substances, unique properties, (carbon (c) nitrogen (N)
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compounds
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chemical combination of 2 or more elements
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atoms
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of each element have a unique mass
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melting
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solid to liquid
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freezing
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liquid to solid
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evaporation
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liquid to gas, only on the surface
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Vaporization
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liquid to gas usually heat added, happens eveywhere in liquid
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condensation
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vapor to liquid (clouds to rain)
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sublimation
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solid to gas( dry ice)
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