Physics · Unit 1 · Heating processes · Kinetic particle model and specific heat capacity
Explain that a change in temperature is due to the addition or removal of energy from a system (without phase change).
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Explain how energy transfers and transformations in mechanical systems always result in some heat loss to the environment, so that the amount of useable energy is reduced.
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Explain that the change in the internal energy of a system is equal to the energy added or removed by heating plus the work done on or by the system, and recognise this as the first law of thermodynamics and that this is a consequence of the law of conservation of energy.