Question

What is Entropy and Entropy Change?

Answer 1

entropy is the measure of randomness.

Answer 2

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Here is your answer

Entropy is a measure of randomness of disorderness of the system

For a given substance the crystalline solid state has the lowest entropy and the gaseous state has the highest entropy and the liquid has the entropy in between them

» Entropy is a state function and extensive property

»For a spontaneous processes in the isolated system the entropy change is positive