Introduction to Entropy - Entropy lesson 1- Energetics lesson 21 - (video # 72)

Entropy(S) is the 'Randomness'.
The entropy change(∆S) made could be found out as;
∆S = ∆Q/T
The units of entropy change and therefore entropy are;
J/K
At 0K the entropy of a substance would be zero because it is the temperature that it tends to exist as a perfect crystal. This is the 3rd law in Thermodynamics.
The Entropy is going to play an important roll in determination of the
spontaneity of a reaction in our future lessons.
So you enjoy the Term 'Entropy'.
Thushara Perera