Oxidation-Reduction Reactions
Science

An equation showing either the oxidation or the reduction that takes place in a redox reaction
Half-reaction
An equation showing either the oxidation or the reduction that takes place in a redox reaction. Half-reaction. A half-reaction is a part of a redox reaction that shows either the loss or gain of electrons.

The state of an element or ion in a compound with regard to the electrons gained or lost by the element
Oxidation number
The state of an element or ion in a compound with regard to the electrons gained or lost by the element. Oxidation number. It is a number assigned to an element in a chemical compound that represents the number of electrons lost or gained by an atom of that element.

A chemical change in which one species is oxidized (loses electron) and another species is reduced (gains electrons), also called redox reaction
Oxidation-reduction reaction
A chemical change in which one species is oxidized loses electrons and another species is reduced gains electrons, also called redox reaction. Oxidation-reduction reaction. In simple terms, a redox reaction is when one substance donates electrons to another, changing their electron counts.