Oxygen normally forms

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• Oxygen toxicity — Classification and external resources In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7  …   Wikipedia

• Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …   Wikipedia

• Oxygen mask — A plastic oxygen mask on an ER patient. An oxygen mask provides a method to transfer breathing oxygen gas from a storage tank to the lungs. Oxygen masks may cover the nose and mouth (oral nasal mask) or the entire face (full face mask). They may… …   Wikipedia

• Oxygen sensor — Contents 1 Automotive applications 1.1 Function of a lambda probe 1.2 The probe …   Wikipedia

• oxygen mask — UK / US noun [countable] Word forms oxygen mask : singular oxygen mask plural oxygen masks an object that fits over your face and is connected to a container of oxygen, used for helping you to breathe normally …   English dictionary

• oxygen tent — UK / US noun [countable] Word forms oxygen tent : singular oxygen tent plural oxygen tents a large container filled with oxygen that doctors put around a person who cannot breathe normally …   English dictionary

• Reactive oxygen species — (ROS) are ions or very small molecules that include oxygen ions, free radicals, and peroxides, both inorganic and organic. They are highly reactive due to the presence of unpaired valence shell electrons.ROS form as a natural byproduct of the… …   Wikipedia

• chemical compound — Introduction  any substance composed of identical molecules consisting of atoms (atom) of two or more chemical elements (chemical element).       All the matter in the universe is composed of the atoms of more than 100 different chemical elements …   Universalium

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

• oxide — oxidic /ok sid ik/, adj. /ok suyd, sid/, n. Chem. a compound in which oxygen is bonded to one or more electropositive atoms. Also, oxid /ok sid/. [1780 90; < F (now oxyde), b. oxygène and acide. See OXYGEN, ACID] * * * I Any of a large and… …   Universalium

• Atherosclerosis — For the journal, see Atherosclerosis (journal). Atherosclerosis Classification and external resources The progression of atherosclerosis (size exaggerated; see text) ICD 10 …   Wikipedia