Intensive and Extensive Variables in Thermodynamics

Generally, thermodynamic variables are of two types:

  • Intensive Variables
  • Extensive Variables

Intensive Variables in Thermodynamics:

The variables which don’t depend on the amount of matter or mass in a thermodynamic system are called intensive variables.

Example: Pressure, temperature, density, surface tension, etc.

Extensive Variables in Thermodynamics:

The variables which are proportional to the amount of matter or mass in a thermodynamic system are called extensive variables.

Example: Volume, magnetic moment, internal energy, entropy, etc.