Oxidation

Definition

Oxidation is a chemical reaction where an atom, ion, or molecule loses electrons. It often involves gaining oxygen or losing hydrogen.

5 Must Know Facts For Your Next Test

1. Oxidation always occurs alongside reduction in redox reactions.
2. The substance that gets oxidized is known as the reducing agent.
3. Oxidation numbers increase during oxidation.
4. Common examples of oxidation include rusting of iron and combustion reactions.
5. In biological systems, oxidation reactions are crucial for energy production.

Review Questions

• What happens to the oxidation number of a substance that is oxidized?
• Why must oxidation always occur with reduction?
• Name a common everyday example of an oxidation reaction.

Related terms

Reduction:

A chemical reaction where an atom, ion, or molecule gains electrons, often associated with losing oxygen or gaining hydrogen.

Redox Reaction:

A combination of reduction and oxidation reactions occurring simultaneously in a chemical process.

Oxidizing Agent:

A substance that causes another substance to be oxidized by accepting its electrons and being reduced in the process.