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7 Cards in this Set
- Front
- Back
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Chemical Energy
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Energy potentially or actually liberated by a chemical reaction, also called heat of reaction. This energy may be converted to or from electrical energy, heat, or light. Normally, energy absorbed in chemical change is considered positive; energy released is negative.
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Exothermic Reaction
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a chemical reaction accompanied by the evolution of heat
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Endothermic Reaction
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a chemical reaction accompanied by the absorption of heat
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Concentration
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The amount of a particular substance in a given amount of another substance, especially a solution or mixture.
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Catalyst
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a substance that causes or accelerates a chemical reaction without itself being affected.
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Alloy
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A metallic substance made by mixing and fusing two or more metals, or a metal and a nonmetal, to obtain desirable qualities such as hardness, lightness, and strength. Brass, bronze, and steel are all alloys.
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Enzyme
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any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion.
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