Heat capacity is the measure of the ability of an object to store heat as its temperature changes.
It is the measure of the amount of heat required to change the temperature of an object by 1°C.
The SI unit of heat capacity is joules per Kelvin (J/K).
The heat capacity of an object depends on the type of the material the object is made and also the mass of the object. An object with larger mass has higher heat capacity.
An object with higher heat capacity need more heat supplied to change 1 unit of the temperature.