Thermodynamic Properties : Extensive and Intensive

By | February 6, 2019

Thermodynamic properties

Thermodynamic properties are the characteristics (identifiable and observable) of a system by which it can be specified.

For example: mass, volume, temperature, pressure etc.

Thermodynamic properties can be divided into two groups

  1. Extensive properties
  2. Intensive properties

Now let us understand each types of property in detail.

Extensive thermodynamic property

Extensive properties are those properties which depend on the extent of the system. That means extensive properties are directly related (directly proportional) to the mass.

Examples of extensive properties: volume, internal energy, mass, enthalpy, entropy etc.

Intensive thermodynamic properties

Intensive properties are those properties of the system which do not depend on the extent of the system. That means intensive properties are not related to the mass.

Examples of intensive properties: temperature, pressure, density etc.

Note: Specific values (per unit mass) of the extensive properties are intensive properties. For example, specific internal energy, specific entropy etc.

Also read:

Macroscopic and Microscopic viewpoints of thermodynamics

Different laws of thermodynamics

Different pressure measuring devices

Featured image source: By I, Luc Viatour, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=160805

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