Respuesta :

Oxidation is when a substance gain oxygen,increase of oxidation number,lose electrons & hydrogen
Reduction is the opposite of oxidation
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Answer:

1. Oxidation is when a molecule, atom or ion losses an Electron. 2. Reduction is when a molecule, atom or ion gains an electron. 3. endergonic means absorbing energy in the form of work whereas Exergonic means releasing energy in the form of work.

Explanation: