Chemistry Electrolysis Key Terms

Ion

An atom that has either lost or gained electrons.

Ionic compound

A compound made up of a metal and a non-metal.

Cations

A positively charged ion.

Anions

A negatively charged ion.

Electrolysis

The splitting up of a compound into its elements using electricity.

Electrolyte

A liquid or solution that conducts electricity.

Electrode

A rod (metal or graphite) that conducts electricity.

Anode

A positively charged electrode that attracts anions.

Cathode

A negatively charged electrode that attracts cations.

Oxidation

When a substance loses electrons.

Reduction

When a substance gains electrons.

Molten

The substance has ‘melted’ or is in ‘liquid’ form.