Zeroth law of thermodynamics
Zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other.
First Law of Thermodynamics
The First Law of Thermodynamics states that energy of a system may change forms, but it is neither created nor destroyed.
It is also known as the Law of Conservation of Energy
Another way of stating the first law is that internal energy (∆E) of a system is the sum of the heat flow across its boundaries (q) and the work done on the system (W).
∆E = q + W
Second Law Of Thermodynamics
The Second Law of Thermodynamics can be stated in any of three synonymous ways:
For a spontaneous process, the entropy of the universe increases.
For a spontaneous process, ΔSuniverse > 0.
For a spontaneous process, ΔSsystem + ΔSsurroundings > 0
Third Law of Thermodynamics
Third Law of Thermodynamics states that entropy of system at absolute zero temperature is constant