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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 ...


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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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