Reactions Flashcards

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Chemical Reaction

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A process where substances (reactants) are transformed into new substances (products).

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Reactant

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The starting substances in a chemical reaction.

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Product

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The new substances formed in a chemical reaction.

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Balanced Equation

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A chemical equation where the number of atoms of each element is the same on both sides.

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Exothermic Reaction

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A reaction that releases energy, usually as heat or light.

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Endothermic Reaction

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A reaction that absorbs energy, usually heat.

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Acid

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A substance with a pH below 7 that donates hydrogen ions (H⁺) in a solution.

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Base

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A substance with a pH above 7 that produces hydroxide ions (OH⁻) in solution.