Specific heat and heat capacity
1. Specific heat (c)
Specific heat (c) = the amount of heat (Q) needed to raise the temperature (T) one unit of mass (m) of objects by one degree. The equation of the specific heat :
The International System Unit of the specific heat is J/Kg K.
The specific heat of object changes with temperature. If the temperature change is not too large, the heat can be considered constant.
The following is the heat of several objects at a pressure of 1 atm and a temperature of 20 oC (obtained through experiments).
2. Heat capacity (C)
Heat capacity (C) = the amount of heat needed to raise the temperature of all objects by one degree. The equation of the heat capacity:
C = m c
Description: C = heat capacity, m = mass, c = the specific heat of object.