Chemistry - Chemical Reactions

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8 Terms

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Activation Energy

The amount of energy needed to start a reaction

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Exothermic Reactions

Reactions that take in energy. (Products that have more energy than the reactants)

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Endothermic Reactions

Reactions that take in energy. (Products that have more energy than the reactants)

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Concentration

The amount of matter (reactants) in a given volume of another material.

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Surface Area

Increasing surface area increases rate of reaction

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Temperature

Increasing temp. increases rate of reaction. Adds energy to atoms which move apart, bonds break, and new bonds form. Decreasing temperature slows movement of atoms. Frozen/Solid - Atoms stop moving and can not react.

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Catalysts

Molecules (proteins) that speed up Chemical Reactions without being used up. Enzymes are proteins. They are biological catalylysts

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Inhibitor

a thing that blocks molecules from going into the enzyme