Oxidation-reduction (redox) reactions

Definition

Oxidation-reduction (redox) reactions involve the transfer of electrons between two substances. In these reactions, one substance is oxidized (loses electrons) and another is reduced (gains electrons).

5 Must Know Facts For Your Next Test

1. Oxidation is characterized by the loss of electrons or an increase in oxidation state.
2. Reduction is characterized by the gain of electrons or a decrease in oxidation state.
3. The substance that donates electrons in a redox reaction is called the reducing agent, while the one that accepts electrons is called the oxidizing agent.
4. Redox reactions are essential for balancing chemical equations and determining stoichiometry in many chemical processes.
5. Common examples of redox reactions include combustion, corrosion, and biological processes like cellular respiration.

Related terms

Oxidation:

A process in which an atom, ion, or molecule loses electrons and increases its oxidation state.

Reduction:

A process in which an atom, ion, or molecule gains electrons and decreases its oxidation state.

Oxidizing Agent:

A substance that gains electrons and gets reduced in a redox reaction.