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The element oxygen is widely known. It is in the atmosphere, and
people breath it everyday. Oxygen Is a tasteless, and colorless. It is 21% of
the atmosphere. It can be found In water, and in most rocks and In
organic compounds. It Is capable for combining with all elements
except Inter gasses. |
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Oxygen is a Group 16 elemet. About 1/5th of the atmosphere is oxygen; the atmosphere contains about 15% oxygen. Oxygen Is the third most abundant element found In the sun and it helps the carbon-nitrogen cycle, one process responsible for stellar energy production. Oxygen in some states is the reason far the bright red and yellow-green colors of the aurora. About two thirds of the human body, and 9/10 of water is oxygen.
Ozene (03) Is another allotrope of oxygen. It Is formed from electrical discharges or ultraviolet light acting on 02. Aerosols In the atmosphere have a detrimental effect on the ozone layer. Large holes in the ozone layer are forming over the polar regions and these are increasing in size. Paradoxicaliy, ozone is texici undiluted ozone Is bluish-black (and solid ozone is violet-black).
The element oxygen's atomic number is 8, and it's atomic weight Is 16.00. All elements have neutrons, protons, and isotopes, and oxygen has 8 of each of them. The melting point of oxygen is -218A degrees celsius. Its boiling point Is -182.962 degrees celsius. The specific gravity of oxygen Is 114, and its symbol is "O". The crystal structure of oxygen is cubic.
We use oxygen all the time. Some of its uses are breathing, oxygen respirators, rocket fuel, and ozone (03). Oxygen atoms are present in water (h2o) and water is essential to all life. Oxygen Is also, called "Chalcogen".
