When a reactant accumulates electrons during a reaction, it is called a reduction. When metals react with an acid, this often happens. When a reactant loses electrons during a reaction, it is called oxidation. When a reactant accumulates electrons during a reaction, it is called a reduction.
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Oxidation is a reaction that removes an electron from a substance, reduction is a reaction that adds electrons to a substance.
Answer:
When a reactant accumulates electrons during a reaction, it is called a reduction. When metals react with an acid, this often happens. When a reactant loses electrons during a reaction, it is called oxidation. When a reactant accumulates electrons during a reaction, it is called a reduction.