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chemvocab1-4 - Chapter 1 hypothesis a tentative explanation...

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Chapter 1 hypothesis : a tentative explanation or prediction based on experimental observations law : a concise verbal or mathematical statement of a behavior or a relation that is consistently observed in nature without contradiction theory : a well-tested, unifying principle that explains a body of facts and the laws based on them heterogeneous : a mixture in which the uneven texture of the material can be detected homogeneous : a mixture that consists of two or more substances in the same phase (called solutions ) purified : when a mixture is separated into its pure components extensive properties : depend on amount of substance present (mass, volume, amount of heat obtained) intensive properties : do not depend on the amount of substance (density) chemical property : indicates whether and sometimes how readily a material undergoes a chemical change with another material precision : indicates how well several determinations of the same quantity agree accuracy
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