Explanation:
First principle, or Law of Conservation of energy. It establishes that the total amount of energy in any physical system isolated from its environment will always be the same, although it can be transformed from one form of energy to many different others. In fewer words: “Energy can neither be created nor destroyed, only transformed.”
Third principle, or Law of absolute zero. It dictates that the entropy of a system that is taken to absolute zero will always be a definite constant. This means that upon reaching absolute zero (-273.15° C or 0 K), the processes of physical systems stop and the entropy has a constant minimum value.
Zero principle or Law of thermal equilibrium. It is called “law zero” because, although it was the last to be postulated, the basic and fundamental precepts it establishes have priority over the other three laws. It dictates that “if two systems are in thermal equilibrium independently with a third system, they must also be in thermal equilibrium with each other.”