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The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
The amount of energy needed to heat water is determined by its specific heat capacity, mass and the required temperature change. A heat battery uses the change of state of a substance with a high specific latent heat of fusion to provide sufficient power to provide instant hot water in a home.
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