Oxide

An oxide is a chemical compound of oxygen with other chemical elements. In the 18th century, oxides were named calxes or calces after the calcination process used to produce oxides. Calx was later replaced by oxyd.

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See category for a list of oxides.

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Oxides can be named after the amount of oxygen atoms in the oxide. Oxides containing only one oxygen are called oxide or monoxide, those containing two oxygen atoms dioxide, three trioxide, four tetroxide, and so on following the Greek numerical prefixes.

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There are two other types of oxide—peroxide and superoxide. Both count as oxides but have different oxidation states and react in different ways compared to oxides.

Chemical compound: A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. For example, dihydrogen monoxide (water, ) is a compound composed of two hydrogen atoms for every oxygen atom....

Oxygen: :This article is about the chemical element oxygen. For other usage, see Oxygen (disambiguation)....

Chemical element: A chemical element, often called simply element, is the class of atoms which contain the same number of protons....