Changes And Classification
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PRESENTATION OUTLINE
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Compressible-is a measure of the relative volume change of a fluid or solid as a response to a pressure change.
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Melting-make or become liquefied by heat.
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Freezing-below 32°F (0°C).
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Sublimation-chemical process where a solid turns into a gas without going through a liquid stage.
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Physical change-Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.
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Chemical change-Chemical changes occur when a substance combines with another to form a new substance.
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Presipitate-cause (a substance) to be deposited in solid form from a solution.
Pure substance-a material that has a constant composition (is homogeneous) and has consistent properties throughout.
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Mixture-a substance made by mixing other substances together.
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Homogeneous mixture-any mixture that is uniform in composition throughout.
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Chromatography-the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium in which the components move at different rates.
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