Thermo – Energy
Dynamics – Pattern of changes
The study of changes in energy associated with physical and chemical reaction is called as thermodynamics. In general, it is the study of effect of work, heat and energy on a system.
When changes in energy are studied from chemistry point of view, it is called as chemical thermodynamics.
The study of changes in energy and chemical reaction are based on the basis of principles called as laws of thermodynamics. These are known as zeroth, first, second and third law of thermodynamics.