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Unformatted text preview: rest of the universe that interact w/system beaker, surface, surrounding air internal energy (U) total energy contained within the system o partly kinetic, partly potential translated motion straight-line motion rotational motion spinning vibrational displacement of atoms within molecules Heat (q) amount of energy transferred between a system and its surroundings as a result of temperature differences o Higher temperatures to lower temperatures o Heat transfer stops when they reach the same temperature Thermal equilibrium o A system does not contain heat; it contains internal energy Work (w) a system does not contain work o Pressure-volume work: work done when gases either expand or are compressed. o W = F X D (force times distance) o Constant external pressure: w = PV V = change in the volume of gas...
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