Oxygen Question?

Question

do you know some interesting facts about oxygen, is there any dangers associated with it, and where is it found in nature

Answer 1

In the air.

needed for breathing and fires.

too much oxygen can make an explosive situation.


oxygen combines with more elements than any other .

Answer 2

Earth's primordial atmosphere had no oxygen, so life first evolved anaerobically.

Metabolic reactions without oxygen have many uses: in making bread (yeast); fermentation of alcoholic beverages; breakdown of sewage and other toxic waste.

Oxygen pretty much dictates where different organisms can survive. Aerobes, like humans, have to have it. Some anaerobes, like internal microflora (eg in our intestinal tracts, or in cows' rumens) would be poisoned by it. And there are some incredible organisms that can go either way - like yeast.

In some ocean hydrothermal vents, where there's no oxygen and no source of organic carbon, some thermophiles are able to metabolize and respire using sulfur or iron as the ultimate electron acceptor in cellular respiration. (Aerobes use oxygen.)

Answer 3

There's quite a lot of oxygen in the atmosphere, and even more in the oceans. Liquid oxygen is paramagnetic.

Answer 4

In science, oxygen is a chemical element with the chemical symbol O and atomic number 8. The word oxygen derives from two roots in Greek, οξύς (oxys) and -γενής (-genēs) . It was recognized in 1777 by Antoine Lavoisier, who coined the name oxygen from the Greek roots mentioned above. Oxygen has a valence of -2. On Earth it is usually bonded to other elements covalently or ionically. Examples for common oxygen-containing compounds include water (H2O), sand (silica, SiO2), and rust (iron(III) oxide, Fe2O3).

Diatomic oxygen or dioxygen (O2) is one of the two major components of air (20.95%); the other major component is nitrogen. Oxygen is produced by plants during photosynthesis, and is necessary for aerobic respiration in animals. It is toxic to obligate anaerobic organisms and was a poisonous waste product for early life on Earth. Triatomic oxygen (ozone, O3) forms through radiation in the upper layers of the atmosphere and acts as a shield against UV radiation.

The most familiar oxygen compound is water. Other well-known examples include silica (found in sand, glass, rock, etc.), and the compounds of carbon and oxygen, such as carbon dioxide (CO2), alcohols (R-OH), carbonyls, (R-CO-H or R-CO-R), and carboxylic acids (R-COOH). Oxygenated radicals such as chlorates (ClO3−), perchlorates (ClO4−), chromates (CrO42−), dichromates (Cr2O72−), permanganates (MnO4−), and nitrates (NO3−) are strong oxidizing agents in and of themselves. Phosphorus is biologically important in its oxygenated form as the phosphate (PO43−) ion. Many metals bond with oxygen atoms, such as iron in iron(III) oxide (Fe2O3), commonly called rust.

Answer 5

there is 21% oxygen in the atmosphere.

Answer 6

Lancenigo di Villorba (TV), Italy

As you know, the most evident Oxygen's action is named as Combustion, e.g. the phenomena running every time coal or methane are burning : its glamour owe to great energy amount released in form of heat and light.

DANGERs
You know that mankind, animals and other aerobic organisms need for Oxygen to live : Oxygen is an oxidizer and its Life-Role owe to Redox Reactions taking place inside Mytochondria's Cells.
On the other hand, Oxygen may results a poison (e.g. it is an oxidizer which may form "Ageing Radicles") every time living organisms breath it as too concentrated gas or pure form.
Oxygen may burn greases, paper or active metals every time you increase its own concentration.


Since you are interested to interested facts about Oxygen, I treat about Oxygen's Discovery.

HISTORY
During XVII century, J. J. Becher built a metaphysical theory treating about the Combustion phenomena : this theory involved an unvisible fluid named as "Phlogiston" (e.g. a greek term meaning "to burn"). In the same times, the german medician G. E. Stahl went back to these thoughts, so commonly it results attributed to him lonely.
The theory stated that Phlogiston is a fluid able to escape from a clay-like matter (e.g. terra pinguis) and it reacts against air so heat and light have to scatter out.
At that times, scientists believe that air was a perfect gas such an Element and there isn't any enquiry to run about its nature....they wrong.
At the second half of XVIII century, two british scientists (J. Black and D. Rutherford) executed other experiments about combustion. Black retrieved a gas from the bottom of the glass-bottle where he confined a candle : the gas was named as "Fixed Air" (e.g. Carbon Dioxide) since it results heavier than air itself. Rutherford modified the Black's mixture since it burned Phosphorous inside this surround : the resulting gas was named as "Noxious Air" (e.g. Nitrogen) since it loose any combustion power.
At that time, a swedish pharmacist (C. W. Scheele) retrieved a new gas by thermal decomposition of Silver Carbonate, Mercury Oxide and Potassium Nitrate : himself noted that the gas enhance the candle combustion.
In a similar way, the english J. Priestley studied Mercury Oxide and his findings take credit greater than Scheele's ones. Nonetheless, two scientists explained the overcomes by means of Phlogiston's Theory.

LAVOISIER AND OXYGEN
Once Priestley met A. L. Lavoisier, the latter man repeated all the experiments and executed other ones : Lavoisier refused Phlogiston and he was looking for other reasons.
Lavoisier roasted Mercury Oxide so it replicated Priestley's overcomes : Lavoisier named this gas as OXYGEN (e.g. a greek term meaning "Acid Forming").
Lavoisier roasted several metals so he obtained whitish crusty-like matters : since the latter chemicals results able to dissolve inside acidic solutions, Lavoisier displaced them as BASEs ; Lavoisier thought that Earth would be a mixture of Basic Oxides.
Lavoisier burned Carbon, Phosphorous and Sulphur he obtained chemicals able to react against Lavoisier's bases.
Lavoisier attributed to Oxygen a fundamental role in Acid and Base's Genesis.
Lavoisier understood that Oxygen is a gas Air-former while the second gas was named as AZOTE (e.g. a greek term meaning "no life") by himself.
Lavoisier burned Phosphorous so it stated that it forms new chemicals increasing its weight despite Phlogiston would suggest (e.g. Phlogiston escapes from solid matter so it would diminute solid's weight).
Lavoisier burned a Hydrogen/Oxygen's mixture obtaining dew's droplets and stating that Hydrogen (e.g. discovered by sir H. J. Cavendish) is a water-forming (e.g. Hydrogen is a greek term having this meaning).

I hope this helps you.