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16-10-2016
Chemistry

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The cooling curve shows temperature changes in a material as it is transformed from a liquid to a solid. Heat flows out at a constant rate. What is the source of the heat released from the material during the time interval when the curve is horizontal?

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Erudite1 Erudite1

28-10-2016

Addition of heat to a substance causes it to experience change in state. The heat added to the substance is the source of the heat released from the substance during melting.

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