Chapter 13
Heat and Heat Transfer
By Boundless
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Heat is a measurable form of energy that can be transferred from one body to another; it is not a substance.
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Heat is the spontaneous transfer of energy due to a temperature difference.
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The internal energy of a system is the sum of all kinetic and potential energy in a system.
The heat capacity measures the amount of heat necessary to raise the temperature of an object or system by one degree Celsius.
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The specific heat is an intensive property that describes how much heat must be added to a particular substance to raise its temperature.
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Calorimetry is the measurement of the heat of chemical reactions or physical changes.
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An ideal gas has different specific heat capacities under constant volume or constant pressure conditions.
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Calorimetry is used to measure the amount of heat produced or consumed in a chemical reaction.
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Evaporation is the process of molecules on a liquid's surface achieving sufficient energy to break free of the liquid and become gas.
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At equilibrium, evaporation and condensation processes exactly balance and there is no net change in the volume of either phase.