Basic Chemistry Concepts

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Mixture

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Two or more substances combine together without making a new substance.

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Substance

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A particular kind of matter.

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Physical change

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A change in a substance that does not change its identity.

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Conservation of matter

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States that matter is not created or destroyed during a change.

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Solution

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A homogeneous mixture of two or more substances.

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Homogeneous mixture

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A mixture in which substances are evenly distributed throughout the mixture.

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Particles

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Extremely small units of matter.

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Solute

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A substance that is dissolved in a solution.

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Solvent

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The substance in which the solute dissolves.

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Physical properties

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The characteristics of a substance that can be observed or measured without changing the substance.