Mixture & Pure Substances, Acids, and Bases

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What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

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What is a pure substance?

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A material made of only one type of particle, having consistent properties throughout.

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What is a homogeneous mixture?

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A mixture that has a uniform composition and appearance throughout, such as saltwater.

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What is a heterogeneous mixture?

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A mixture that consists of visibly different substances or phases, such as salad or trail mix.

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What is an acid?

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A substance that donates protons (H+) in a solution and has a sour taste.

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What is a base?

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A substance that accepts protons (H+) in a solution and often feels slippery.

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What is a solution?

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A homogeneous mixture composed of a solvent and one or more solutes.

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What is a solvent?

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The substance in a solution that dissolves the solute, usually present in the largest amount.

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What is a solute?

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The substance that is dissolved in a solution, usually present in a smaller amount.

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What is the pH scale?

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A scale used to measure how acidic or basic a solution is, ranging from 0 (acidic) to 14 (basic).