Property of a system

Property represents any observable chara-cteristics of the system.  Property of a system depends only on its state , irrespective of how that state was attained. 

Intensive property -: If a property of  a system does not depend upon it's mass , it is intensive property. For example,  pressure, temperature, density,  etc .

Extensive property -: when the property of any system is depend upon the mass it is called extensive property. For example enthalpy , volume, etc .

 

If a given quantity depend on two para-meters is connected such that these para-meters are connected by a line path , then the quantity is not a property . if an given quantity is an exact differential,  it is pro-perty ,otherwise no .