1. First law:
Energy can neither be created nor be destroyed. Energy in one form can be converted into another form without any loss or gain.
Second law:
Entropy of the universe increases during a spontaneous process.
Third law:
Entropy of a perfect crystalline substance is zero at absolute zero of temperature.
2. Entropy:
Entropy is a measure of randomness or disorder of a system.
3. Spontaneous process:
A spontaneous process is defined as an irreversible process which has a natural tendency to occur either of its own or after proper initiation under the given set of conditions.
