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Thermochemistry

Study of heat changes during chemical and physical changes

System

Part of the universe on which you focus your attention

Surroundings

Everything else in the universe

First law of thermodynamics

Energy is neither created nor destroyed in any process

Heat

Energy transferred due to temperature differences

Temperature

Expression of the average kinetic energy of a substance

Heat capacity

Amount of heat to raise the temperature of a substance by 1°C

Specific heat capacity

Amount of heat to raise the temperature of 1 g of a substance by 1 °C

Joule

Unit of heat energy

°C

Unit of temperature

Calorimetry

Lab procedure to measure heat changes

Calorimeter

An insulated device in which to measure heat changes