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Oxygen in a gas discharge tube. (Alchemist-hp)Oxygen is one of those elements you simply can't live without. You find it in the air your breathe, the water you drink, and the food you eat. Here are some quick facts about this important element. You can find more detailed information about oxygen on the oxygen facts page.
  1. Animals and plants require oxygen for respiration.

  2. Oxygen gas is colorless, odorless, and tasteless.

  3. Liquid and solid oxygen are pale blue.

  4. Oxygen is a non-metal.

  5. Oxygen gas normally is the divalent molecule O2. Ozone, O3, is another form of pure oxygen.

  6. Oxygen supports combustion.

  7. Oxygen is paramagnetic.

  8. Approximately 2/3 of the mass of the human body is oxygen.

  9. Excited oxygen is responsible for the bright red and yellow-green colors of the aurora.

  10. Oxygen was the atomic weight standard for the other elements until 1961 when it was replaced by carbon 12.


January 11, 2012 at 11:38 am
(1) Paul says:

Ozone, unlike the divalent molecule, has quite a pungent odor that can be easily detected at low concentration levels. People near a recent or continuous electrical discharge (lightning, electric arc welding) can usually detect the presence of ozone.

Ozone has many good industrial uses as a disinfectant, pesticide, sanitizer, or deodorizer but is harmful to the respiratory system and is classified as an air pollutant. It is however a benefit in the upper atmosphere as protection from ultraviolet light exposure.

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