What is the easy way to remember oxidation and reduction?

Use OIL RIG: Oxidation Is Loss of electrons, Reduction Is Gain of electrons.

Can oxidation happen without reduction?

No. Oxidation and reduction always occur together — electrons lost by one species are gained by another, which is why they are called redox (reduction-oxidation) reactions.

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Difference Between Oxidation and Reduction

Oxidation and reduction always happen together in redox reactions. Remember the rule OIL RIG: Oxidation Is Loss, Reduction Is Gain (of electrons).

In short

Oxidation is the loss of electrons (or gain of oxygen / loss of hydrogen); reduction is the gain of electrons (or loss of oxygen / gain of hydrogen).

Oxidation vs Reduction — Comparison Table

Basis	Oxidation	Reduction
Electrons	Lost	Gained
Oxygen	Gained	Lost
Hydrogen	Lost	Gained
Oxidation number	Increases	Decreases
Agent	Reducing agent is oxidised	Oxidising agent is reduced

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Frequently Asked Questions — Oxidation vs Reduction

What is the easy way to remember oxidation and reduction?: Use OIL RIG: Oxidation Is Loss of electrons, Reduction Is Gain of electrons.
Can oxidation happen without reduction?: No. Oxidation and reduction always occur together — electrons lost by one species are gained by another, which is why they are called redox (reduction-oxidation) reactions.

Difference Between Oxidation and Reduction

Oxidation vs Reduction — Comparison Table

Frequently Asked Questions — Oxidation vs Reduction

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