Oxygen is a chemical element; it has the symbol O and its atomic number is 8. It is a member of the chalcogen group in the periodic table. It is highly reactive, a nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds.

Oxygen, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.

Chemistry in its element podcast (MP3) from the Royal Society of Chemistry 's Chemistry World: Oxygen 17 Eylül 2011 tarihinde Wayback Machine sitesinde arşivlendi.

Oxygen therapy is used to treat emphysema, pneumonia, some heart disorders (congestive heart failure), some disorders that cause increased pulmonary artery pressure, and any disease that impairs the body's ability to take up and use gaseous oxygen.

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Chemical element, Oxygen, information from authoritative sources. Look up properties, history, uses, and more.

Despite being an essential medicine, producing oxygen that is safe for patient use is a complex process since it requires the devices and systems needed to deliver oxygen to patients, ranging from pulse oximeters to ventilators, and health workers that are trained to use such devices effectively.

Oxygen: Directed by Alexandre Aja. With Mélanie Laurent, Mathieu Amalric, Malik Zidi, Laura Boujenah. A woman wakes in a cryogenic chamber with no recollection of how she got there. As she's running out of oxygen, she must rebuild her memory to find a way out of her nightmare.

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Oxygen accounts for about 23% of the atmosphere's mass with pairs of oxygen atoms stuck together to make dioxygen molecules, but it's not just in the air, we breathe. Overall, it's the most abundant element on the earth's surface and the third most abundant in the universe after hydrogen and helium.