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6 September, 09:13

Select the correct answer from each drop-down menu.

Describe an oxidation-reduction reaction.

In an oxidation-reduction reaction, oxidation is what happens when a reactant___. Reduction occurs when a reactant ___ in the reaction.

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  1. 6 September, 09:20
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    First off, we have to understand what we means by oxidation and reduction.

    Oxidation is the loss of electrons during a reaction by a molecule, atom or ion. Oxidation occurs when the oxidation state of a molecule, atom or ion is increased.

    Reduction on the other hand is the opposite of oxidation. It is the gain of electrons during a reaction by a molecule, atom or ion. Reduction occurs when the oxidation state of a molecule, atom or ion decreases.

    Back to the question;

    oxidation is what happens when a reactant loses electrons.

    Reduction occurs when a reactant gains electrons in the reaction.
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