Specific Heat





Specific heat

'Specific heat' is the amount of heat required to raise the temperature of 1 kg of a substance by 1 ° C. The unit is kcal / (kg ℃).

The specific heat of water is 1kcal / (kg ℃) because 1kcal of water requires 1kcal of heat to raise 1 ℃.
If the mass of the object is m, the heat applied to the object is Q, and the temperature change is t, the specific heat of the object C can be expressed as

\[ \begin{align}Specific \, heat &= \frac { heat }{ (mass\times temperature \, change) } \\ C&=\frac { Q }{ m\Delta t } \end{align} \]

Specific heat can be used to distinguish substances because they have unique values depending on the type of substance.

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