# Thermal (Heat) Capacity | Definition, Formula, Units – Thermometry and Calorimetry

Thermal Capacity Definition Physics: (Heat) Capacity
Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to a given mass of a material to produce a unit change in its temperature.

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## Thermal (Heat) Capacity | Definition, Formula, Units – Thermometry and Calorimetry

Thermal Capacity Formula:
Heat capacity of any body is equal to the amount of heat energy required to increase its temperature through 1°C.

Heat capacity = mc

where, c = specific heat of the substance of the body and m = mass of the body.

Thermal Capacity Unit:
Its SI unit is joule/kelvin (J/K)

Thermal Capacity Dimensional Formula:
Dimensional formula [ML2T-2K-1].

Molar Specific Heat Capacity Formula:
Molar specific heat capacity,

c = $$\frac{s}{\mu}=\frac{\Delta Q}{\mu \Delta T}$$

where, µ = number of moles of substances (gas).

The relation between c and M are

c = MS

where,
M = molecular mass of substance and
S = specific heat capacity.

Thermometry and Calorimetry:
The thermometer is a device used to check the temperature of an object. This branch of measurement of the temperature of a substance is called thermometry. It is measured in degrees or Fahrenheit, usually.

Calorimetry also means the measurement of heat but in joules. It states the amount of heat lost by the body is the amount of heat gained by its surrounding.