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The reason for defining a specific starting point is to remove any doubt of how much energy 1 calorie is. You can just say that it is the energy required to warm 1 gram of water by 1 degree, but that is a different value depending on if you are referring to ice, liquid water, or steam. Even within the same state there are slight differences due to changes in ...


All materials absorb heat. The best conductors of heat are cold objects or metals. (Preferably cold metals) You cannot trap heat.

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