Chemistry Definitions Multiple Choice Worksheet

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Acid (Arrhenius)

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A substance that increases the concentration of hydrogen ions (H+ or H3O+) in aqueous solution.

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Acid (Bronsted-Lowry)

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A substance that donates a proton (H+) to another substance.

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Anion

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A negatively charged ion formed when an atom gains one or more electrons.

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Aqueous Solution

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A solution in which water is the solvent.

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Atom

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The smallest unit of an element that retains the properties of that element.

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**Base (Arrhenius)**

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A substance that increases the concentration of hydroxide ions (OH-) in aqueous solution.

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**Base (Bronsted-Lowry)**

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A substance that accepts a proton (H+) from another substance.

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**Binary Compound**

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A chemical compound containing two different elements.

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Boiling Point

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The temperature at which the vapor pressure of a liquid equals standard atmospheric pressure (101.3 kPa).

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Cation

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A positively charged ion formed when an atom loses one or more electrons.