The "'molar heat capacity "'is the heat capacity per unit amount ( SI unit : mole ) of a pure substance and the "'specific heat capacity "', often called simply "'specific heat "', is the heat capacity per unit mass of a material.
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A current student text on chemistry defines heat thus : " " heat " is the exchange of thermal energy between a system and its surroundings caused by a temperature difference . " The author then explains how heat is defined or measured by calorimetry, in terms of heat capacity, specific heat capacity, molar heat capacity, and temperature.
