1. I know that entropy is measure of disorder... I know that in Gibbs free energy, entropy is TREATED as energy...but I feel confused whether entropy is energy or not, by definition of entropy.
2. If entropy is not a kind of energy, then the question ends. However, if the entropy is really energy, then applying thermodynamics 1st law to entropy, should entropy be categorized as work or thermal energy, s.t. 1st law of thermodynamics valids?