Physics
(a) State the principle of calorimetry.
(b) Why should the surface of the calorimeter be polished?
(c) Why should the calorimeter be made of a material of low specific heat capacity?
Calorimetry
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Answer
(a) The principle of calorimetry states that when a hot body is brought in contact with a cold body, then heat lost by the hot body is equal to the heat gained by the cold body, provided there is no heat loss in the environment.
Heat energy lost by the hot body = Heat energy gained by the cold body
(b) The outer and inner surface of the calorimeter should be polished so as to reduce the loss of heat due to radiation.
(c) The calorimeter should be made of a material of low specific heat capacity so that the amount of heat energy taken by the calorimeter from the contents to acquire it's temperature, is very small.
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