Let us take two bodies of the same mass but made of different materials. If we try to change the temperature of both the bodies by the same amount, we’ll find that the heat required is different for them. Therefore it is obvious, the quantity of heat required also depends on a special property. This property is known as Specific Heat.
Specific Heat Capacity:
Specific Heat Capacity is the quantity of heat required to raise the temperature of the unit mass of a substance by a unit amount.
The quantity of heat required to raise the temperature of 1 kg of a substance through 1K is known as the Specific Heat Capacity of the substance.
The unit of specific heat capacity in SI is J.kg-1.K-1
s = heat required to raise the temperature of mass m of the substance by t / heat required to raise the temperature of mass of water by t