Thermochemistry Concepts

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Calorie

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The amount of energy necessary to raise the temperature of 1 gram of water 1°C.

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Calorimetry

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Measuring energy lost or gained by measuring temperature changes of water in an insulated container designed to minimize energy loss.

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Endothermic

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Type of reaction that absorbs thermal energy from the environment.

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Enthalpy

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The energy content of a chemical system.

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Exothermic

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Type of reaction that releases thermal energy into the environment in the form of thermal or light energy.

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Law of Conservation of Energy

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In a closed system, energy is neither gained nor lost during a physical or chemical change; energy is neither created nor destroyed, but can change form.

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Specific Heat

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The amount of heat energy needed to increase the temperature of 1 gram of a substance by 1°C.

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Thermochemistry

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The study of heat released or absorbed in a chemical reaction or physical change.