Thermodynamic property

 Thermodynamic property

  In thermodynamics a property is
any characteristic of a system that is associated with the energy and can be
quantitatively evaluated.

 The property of a system should
have a definite value when the system is in 
a  particular state.
Thermodynamic property is a
point function. 

Properties like volume of a
system that depend on the mass of a system are called extensive properties.

Properties like pressure or
temperature which do not depend on the system mass are called intensive properties.

The ratio of extensive property
to the mass of the system are called specific properties and therefore become
intensive properties.

Substance can be found in three
states of physical aggregation namely, 
solid, liquid  and vapor which are
called its phases.

 If the system consists of
mixture of different phases, the phases are separated  from 
each other by phase boundary.

The thermodynamic properties
change abruptly at the phase boundary, even though the intensive properties
like temperature and pressure are identical.

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