Mixtures, Solutions, Pure Chemical Substances, Compounds, and Elements

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CHEM1230

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7 Terms

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Mixture

A substance composed of two or more components in proportions that can vary from one sample to another.

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Solution

a homogeneous mixture of one or more solutes dissolved in a solvent

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Pure Chemical Substance

matter that has a fixed, definite composition and specific, unchanging properties

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Compounds

A substance composed of two or more elements in fixed, definite proportions.

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Elements

A substance that cannot be chemically broken down into simpler substances.

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Homogenous mixture

the same composition throughout

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Heterogenous mixture

the composition varies from one region of the mixture to another