What is Difference between Heat and work? - thermodynamics

 Difference between Heat and work

What is Difference between Heat and work? - thermodynamics

-      Work (w): is defined as any quantity of energy that flows across the boundary of a system and its surroundings during the process of change in its state.

-         If the work is done by the system the then, it takes positive value

-         But if work is done on the system then, it takes negative value

 

-         Heat (q): is defined as any quantity of energy that flows across the boundary of a system during a change in its state due to temperature difference between the system and surroundings and flows from higher to lower temperature.

-         If the heat is added to the system the then, it takes positive value

-         But if the heat is given by the system then, it takes negative value.

 

-         Heat and work are different forms of energy and are equivalent quantities.

-         Heat and work are called path functions.