Chapter 2. 2. Work, Heat, and Energy. The energy of a system is a measure of its capacity to do workThe energy of a system is the sum of the kinetic and potential energies of all particles in the systemThe energy of a closed system can be changed by:work done on or by the system heat transfer across its boundariesWork is transfer of energy using organized motion (expansion work, electrical work, etc.)Heat is transfer of energy using thermal motion (chaotic, random motion of molecules) .
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