The net change in a free energy reaction is that energy released in the conversion of reactants to products under standard favourable conditions.
As long as a reaction's ΔS is positive, the reaction is always thermodynamically favored.
An element is a substance which cannot be split into simpler forms by an ordinary chemical process. This simply goes to say that elements are substances which cannot be decomposed into simpler substances by ordinary chemical reactions.
An atom is the smallest unit or part of an element which can take part in a chemical reaction.
On a general note, elements are classified as thus:
So therefore, the net change in a free energy reaction is that energy released in the conversion of reactants to products under standard favourable conditions.
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