Oxygen
Oxygen is a nonmetal. It is a colorless, odorless and tasteless gas in its common gas state. Oxygen is extremely reactive and reacts with almost every element on the Periodic Table except the noble gases. Oxygen has a melting point of 54.8 K and a boiling point of 90.2 K. Oxygen also has a liquid and solid form which are both blue and strongly paramagnetic.
Oxygen is used by plants, animals and humans for respiration everyday. The commercial use of oxygen is mainly in the Steel Industry to remove carbon impurities. Oxygen is also used in cylinders to help humans breathe at high altitudes, underwater and even out of the Earth’s atmosphere in Outer Space. Oxygen is also used in part of the Earth's Ozone Layer to help protect life from the suns harmful rays. 
Oxygen was first independently discovered by Joseph Priestly and Carl Wilhelm. Although, Priestly in 1772, is usually given the credit for discovering oxygen. Antoine Lavoisier, french chemist, first recognized oxygen as an element and gave it the name
oxygen in 1775. Oxygen was discovered when Carl Wilhelm was doing an experiment. Red hot manganese oxide produced a gas, he called the gas “fire air”, because of all the sparks.
Oxygen in a gaseous state is found in the Earth’s atmosphere. Most of the Earth’s Ocean is of the compound water. You can also find oxygen in the Earth’s crust. To obtain pure oxygen it has to be extracted from other compounds.
Oxygen is a pretty easy element to obtain. It is the third most abundant element in the universe. It also accounts for half of the earth’s crust. I mean where would w
e stand, without it? Nine tenths of the mass of water is oxygen. On a final note, everyone needs oxygen to survive! That is reason enough to keep it on the island! At this very moment while reading this you are breathing in oxygen!
14 comments:
yes oxygen is needed for us to breathe but how safe is it really since it can cause combustion?
Other than being necessary for life, what else can it done?
Cant breathing in pure oxygen cause harmful sign effects?
well... fish don't need oxygen. so why should we?
Oxygen in a natural state is safe. Though over time mankind sought a way to use other than its original purpose.
Yes breathing in pure oxygen can be harmful but we only breathe in 21%.
lets all breathe underwater like fish!
fish are better than humans - from Corey.
Fish do need oxygen because the water they breathe through their gills is composed of oxygen.
sooooooo...
oxygen is not needed
Oxygen is essential , so in this regard I have nothing negative to say.
oxygen is needed for a fire to continue burning. So, forest fires especially or any fire continues to burn with oxygen present till the fire is put out with water.
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