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2011 VIRTUAL SCIENCE FAIR ENTRY
The purpose of this experiment is to see how a high or low heat capacity will affect a material's heat retention qualities if the material was to be used as a warmer. The hypothesis was that a higher heat capacity would mean better heat retention and that the stone would have the highest of both. The experiment was conducted in two phases. Phase one was determining heat capacity through heating each material, obtaining certain parameters, and plugging them into a formula. Phase two was observing heat retention by heating each item to 343.15 Kelvins (70°C) and then taking temperature readings as it cooled down. The results showed that the baking soda had the highest heat capacity (the stone had the 2nd highest) and that the stone had the 3rd best heat retention. For most of the items, a higher heat capacity did mean better heat retention. Therefore, while my prediction for the stone was not entirely correct, the overall results of this experiment supported the rest of my hypothesis.
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