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Question: Define the terms 'oxidation' and 'reduction' in redox reactions.
Answer: Oxidation involves the loss of electrons, while reduction involves the gain of electrons. Together, they constitute a redox (reduction-oxidation) reaction.

Example:

In the reaction Zn + CuSO4 → ZnSO4 + Cu, zinc (Zn) undergoes oxidation, and copper (Cu) undergoes reduction.
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