Above the ozone layer, (in low Earth orbits), atomic oxygen becomes the most common form.[23]. One hundred million tonnes of O2 are gotten from air for industrial uses every year. This is different to air, where there is a 1:4 ratio of oxygen to nitrogen. [6], Premature babies used to be placed in boxes with air with a high amount of O2. All rights reserved. What Are Other Ways To Wish Someone A Merry Christmas? Oxygen is the most common chemical element found on or in Earth. Providing optimal oxygen therapy Oxygen levels will be decreased to accommodate fewer people. The oxygen in these oxides and in other compounds (mostly silicate minerals, and calcium carbonate in limestone) makes up nearly half of the Earth's crust, by mass. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Oxygen: The odorless gas that is present in the air and necessary to maintain life. Neurons begin to die within four to six minutes of oxygen deprivation. Learn more. oxygen saturation sO 2 The O 2 concentration of blood expressed as a ratio of its total O 2-carrying capacity; the OS is a measure of the utilization of O 2 transport capacity; sO 2 is ↑ at high altitude, hypocapnia, hypothermia, ↑ cardiac output, O 2 therapy, PEEP–positive end-expiratory pressure ventilation, and respiratory alkalosis. [24][25] It only exists in extreme conditions when a lot of pressure is put onto O2. This was what most people believed caused combustion and corrosion. oxygen is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms. None of them thought it was a chemical element. Many organic compounds have oxygen in them. Copyright © 2011. Hypoxemia is determined by measuring the oxygen level in a blood sample taken from an artery (arterial blood gas). From this experiment he got a gas that he called "dephlogisticated air". Oxygen definition, a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll. Her aunt eventually recovered, was taken off a ventilator and is home, though she still needs oxygen. He was the first person to explain how combustion works. oxygen, O, atomic number 8 (noun) a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust [3], Materials that leave very little residue when they burn, like wood or coal, were thought to be made mostly of phlogiston. Their decay proceeded without a ready supply of oxygen, producing hydrocarbons like methane instead of oxygen-bearing molecules. English chemist John Mayow added to this by showing that fire only needed a part of air. Diseases of the blood, the heart and circulation, and the lungs may all produce some form of hypoxia. Oxygen is a colourless gas that exists in large quantities in the air. This includes people with asthma, heart disease, and chronic obstructive pulmonary disease. [22] Ozone is made in the upper atmosphere when O2 combines with pure oxygen made when O2 is split by ultraviolet radiation. [28], There are three stable isotopes of oxygen in nature. A small steel tank of 16 liters water capacity with a working pressure of 139 bar (2015 psi) holds about 2150 liters of gas and weighs 28 kilograms (62 lb) empty. A nonmetallic element that exists in its free form as a colorless, odorless gas and makes up about 21 percent of the Earth's atmosphere. [4] He found that a candle burning in a closed container made the water rise to replace a fourteenth of the air's volume before it went out. Priestley is usually thought to be the main discoverer because his work was published first (although he called it "dephlogisticated air", and did not think it was a chemical element). All rights reserved. It is the most abundant element in the Earth's crust and occurs in many compounds, including water, carbon dioxide, and iron ore. Oxygen concentrator definition: An oxygen concentrator is a type of medical device used for delivering oxygen to individuals with breathing-related disorders. These conditions normally run for a short period of time. This bond can be called many things, but simply called a covalent double bond. Oxygen gas (O2) was isolated by Michael Sendivogius before 1604. Some people believe this was the discovery of oxygen while others disagree. Chemical oxygen demand is the amount of oxygen needed to oxidize the organic matter present in water. Living things give it off during respiration.[44]. Looking for online definition of oxygen or what oxygen stands for? The zeolite molecular sieves soaks up the nitrogen. 4. One of the first known experiments on how combustion needs air was carried out by Greek Philo of Byzantium in the 2nd century BC. Oxygen is one of the atoms that makes up water (H 2 O). In 1786, the French chemist Antoine Lavoisier coined a term for the element, Coronavirus Hit Latinos Harder Thanks to a Perfect Storm of Disparities, How Earth’s Climate Changes Naturally (and Why Things Are Different Now), The steroid dexamethasone is the first drug shown to reduce COVID-19 deaths, Minecraft’s big bees don’t exist, but giant insects once did, A Guide to the Scientific Knowledge of Things Familiar. Water is made of two hydrogen atoms covalent bonded to an oxygen atom. [39], The oxidation state of oxygen is −2 in nearly every compound it is in. This is then changed to ethylene glycol, which is used to make many products such as antifreeze and polyester (these can then be turned into plastics and fabrics). This was then also evaporated to cool oxygen gas in order to turn it into a liquid. [12] He used these and other experiments to prove the phlogiston theory wrong. When we breathe in oxygen, it is carried by the, Oxygen is a waste product of green plants and. Things that corrode, like iron, were thought to contain very little. This is the second biggest part of the Earth's atmosphere, after dinitrogen (N2). It has the symbol O and atomic number 8. Hydrogen and oxygen combine to form water. Why Is “Christmas” Abbreviated As “Xmas”? [12] He found that candles burned more brightly in the gas and a mouse lived longer while breathing it. Its symbol is O. He was the first person to say it was a chemical element. Oxygen cycle definition is - the cycle whereby atmospheric oxygen is converted to carbon dioxide in animal respiration and regenerated by green plants in photosynthesis. Oxygen is a part of water, which all known life needs to live. Most carbohydrates have the same oxygen to hydrogen ratio as water. Learn more. [27] Both liquid and solid O2 are see-through with a light-blue colour. O2 O2 is Gospel singer Tonéx's second major release. If you have chronic health conditions, your blood oxygen level may fall outside of the normal range. All known life needs water to live. Pure oxygen is used but at a much lower pressure. COBUILD Advanced English Dictionary. It has the symbol O and atomic number 8. noun Biology, Biochemistry. Oxygen is found all around us. [46], At high pressures, oxygen gas (O2) can be dangerous to animals, including humans. Oxygen therapy is used to treat emphysema, pneumonia, some heart problems, and any disease that makes it harder for a person to take in oxygen. He got oxygen in 1771 by heating mercuric oxide and some nitrates. Carbon, hydrogen, oxygen and nitrogen are all lifeless bodies. Acute conditions usually require short-term oxygen therapy. Oxygen is a chemical element. The temperature can go as high as 1,700 °C because it is an exothermic reaction. [31] About 0.9% of the Sun's mass is oxygen.[12]. Oxygen - What does oxygen stand for? Define oxygen debt. The largest contributor to the oxygen cycle is photosynthesis, a process in which plants use carbon dioxide, light and water to produce oxygen from carbon dioxide. According to this definition, oxidation is the loss of hydrogen, while reduction is the gain of hydrogen. Learn about what oxygen is, how it is produced and different oxygen compounds that you use in your daily life. 5. Earth is strange compared to other planets, as a large amount of its atmosphere is oxygen gas. Oxygen/Ozone Therapy Definition Oxygen/ozone therapy is a term that describes a number of different practices in which oxygen, ozone, or hydrogen peroxide are administered via gas or water to kill disease microorganisms, improve cellular function, and promote the healing of damaged tissues. An element, normally a gas, that makes up about one-fifth of the atmosphere of the Earth. He also found that air rushed in when the container was opened. Scheele also sent a letter to Lavoisier in that year that spoke of his discovery.[13]. Photosynthetic cyanobacteria that arose some 3 billion years ago, for instance, began terraforming the planet by emitting oxygen. … [49], From Simple English Wikipedia, the free encyclopedia, (Report of Apollo 204 Review Board NASA Historical Reference Collection, NASA History Office, NASA HQ, Washington, DC). "Oxygen" became the name in the English language, even though English scientists were against it. Published by Houghton Mifflin Company. The respiratory system, also called the gas exchange system, is the body getting rid of carbon dioxide and taking in oxygen.Carbon dioxide, a waste product, goes out of the body. It makes up nearly half (46%[32] Hypoxia, in biology, condition in which tissues of the body are starved of oxygen. In other words , a process in which oxidation of organic compounds occurs in cell and energy is released is called as Respiratory system. Oxygen Short, Inc. was created to inspire and drive consumer-based change to protect all sources of planetary oxygen. 2. It is the most common oxide on Earth. It has no taste or smell. One part, called phlogiston, was given off when the substance containing it was burned. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gaswith the formula O 2. 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. [39], Around 25% of oxygen made by humans is used by chemists. [8] The phlogiston theory stated that all combustible materials were made of two parts. It is pale blue when it is liquid or solid. Tetraoxygen (O4) was discovered in 2001. Oxides are made when metal elements react with oxygen, such as iron oxide, which is known as rust. Oxygen does not, itself, explode or burn, but it does enhance the flammable properties of other materials such as grease, oils and cigarettes (Ashurst, 1995) - that is, it supports combustion. The human brain needs to be without oxygen for only four minutes before permanent damage occurs. That is, the sulphur always remains combined with four parts of oxygen. [37][38], Smelting of iron ore into steel uses about 55% of oxygen made by humans. "Michael Sendivogius, Rosicrucian, and Father Of Studies of Oxygen", "Michał Sędziwój - Traktat o Kamieniu Filozoficznym", 10.1002/1521-3773(20011105)40:21<4062::AID-ANIE4062>3.0.CO;2-X, "Liquid Oxygen Material Safety Data Sheet", "NFPA 704 ratings and id numbers for common hazardous materials", https://simple.wikipedia.org/w/index.php?title=Oxygen&oldid=7209108, Element infobox templates that need attention, Creative Commons Attribution/Share-Alike License. Still, it's good to be aware. He also tried to prove that the substance discovered by Priestley and Scheele was a chemical element. Liquid oxygen and oxygen-rich compounds can be used as a rocket propellant. [15] Ozone absorbs a lot of radiation in the UV part of the electromagnetic spectrum and so the ozone layer in the upper atmosphere protects Earth from radiation. But the truth is trees only supply about 6% of the oxygen... the vast majority comes from algae in the ocean. Oxygen is usually found as a molecule made up of two atoms. This gas is often just called oxygen. Oxygen … Hypoxemia is a below-normal level of oxygen in your blood, specifically in the arteries. It gives a gas stream that is 90% to 93% oxygen. He called it this because he thought oxygen was in all acids, which is wrong. It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts. Oxygen therapy is prescribed for people who can’t get enough oxygen on their own. Researchers found no benefit for hospitalized patients who didn’t need extra oxygen. a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. Oxygen dissolves more easily from air into water than nitrogen does. The symbol for oxygen is O. Oxygen is more than a fifth of the Earth's atmosphere by volume. Oxygen forms a large part of the air…. In a few compounds, the oxidation state is −1, such as peroxides. oxygen meaning: 1. a chemical element that is a gas with no smell or colour. Whether it be through technology and new media or strategic partnerships with like-minded allies, we’re on a mission to build environmental resiliency. A long time after, Leonardo da Vinci worked out that some air was used up during combustion, and this forced water into the vessel.[3]. After breathing the gas, Priestley said that it felt like normal air, but his lungs felt lighter and easy afterwards. This removes any sulfur or carbon from the ore that would not be wanted. Iron's surface will turn to rust (iron oxide) when in air for a long time. If the temperature is raised still higher, or the pressure is reduced, oxygen is given off and the oxide is once more formed. From this, he worked out that oxygen is used for both respiration and combustion. This can make them become healthy quicker if they are ill. 1 : a chemical element that constitutes 21 percent of the Earth's atmosphere, that is capable of combining with all elements except some noble gases, that is active in physiological processes of almost all known organisms, and that is involved especially in … It is essential for aerobic respiration and almost all combustion and is widely used in industry. In the air, two oxygen atoms usually join to make dioxygen (O 2), a colourless gas. Oxygen is very reactive and must be kept away from anything that can burn. Oxygen, which the body needs, comes in. Where is oxygen found on Earth? © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Respiration then takes oxygen gas out of the atmosphere and turns it into carbon dioxide and water. Oxygen, hydrogen and nitrogen are all gases. Chemical oxygen demand testing is used to determine the amount of oxidation that … Algae, cyanobacteria and plants make the Earth's oxygen gas by photosynthesis, using the Sun's light to get hydrogen from water, giving off oxygen. This page was last changed on 11 December 2020, at 04:29. By 1811, Amedeo Avogadro correctly worked out what water was made of based on Avogadro's law. Published by Houghton Mifflin Harcourt Publishing Company. He was also right about how it helps combustion work. As dioxygen (or just oxygen gas), two oxygen atoms are chemically bound to each other. We now call this oxygen (O2). Oxygen gas is the second most common part of the atmosphere, making up 20.95%[34] of its volume and 23.1% of its volume. 3. Most metal's surfaces are turned into oxides when in air. We Asked, You Answered. Diatomic oxyg… 2150 liters of oxygen weighs about 3 kilograms (6.6 lb). He sent a telegram to the French Academy of Sciences on 22 December 1877 telling them of his discovery. Oxygen saturation is the fraction of oxygen-saturated hemoglobin relative to total hemoglobin (unsaturated + saturated) in the blood.The human body requires and regulates a very precise and specific balance of oxygen in the blood. [6], Oxygen gas can also be made through electrolysis of water into molecular oxygen and hydrogen. [48], Concentrated amounts of pure O2 can cause a quick fire. [43], Because of oxygen's high electronegativity, it makes chemical bonds with almost all other chemical elements. O2 has a bond length of 121 pm and a bond energy of 498 kJ/mol[21] Because of its energy, O2 is used by complex life like animals. Oxygen is more than a fifth of the Earth's atmosphere by volume. The American Heritage® Science Dictionary Photosynthesis takes hydrogen from water using energy from sunlight, which gives off oxygen gas. Many molecules in living things have oxygen in them, such as proteins, nucleic acids, carbohydrates and fats. Robert Hooke, Ole Borch, Mikhail Lomonosov and Pierre Bayen all made oxygen in experiments in the 17th and 18th centuries. [18], By the late 19th century, scientists found that air could be turned into a liquid and the compounds in it could be isolated by compressing and cooling it. A protagonist is the main character of a story, or the lead. Oxygen is the chemical element with the symbol O and atomic number 8. [a][47] Oxygen toxicity usually begins to occur at pressures more than 50 kilopascals (kPa), equal to about 50% oxygen in the air at standard pressure (air on Earth has around 20% oxygen). [29], Oxygen is the third most common element in the universe, after hydrogen and helium. This definition is the opposite of the oxygen definition, so it may cause confusion. n. The amount of extra oxygen required by muscle tissue during recovery from vigorous exercise. It is the third most common element in the universe, after hydrogen and helium. Many organic solvents also have oxygen, such as acetone, methanol, and isopropanol. This happens at the nearly same rate, so the amount of oxygen gas and carbon dioxide doesn't change much because of it. The brain, also an organ, is particularly sensitive to the loss of oxygen. [6] His findings were published in 1775. One he called "vital air" (oxygen), which is needed for combustion and respiration. It is a very reactive nonmetal. The most common method is fractional distillation of liquefied air. Oxygen is also found in nearly all biomolecules that are made by living things. When a person engages in high levels of physical activity, the body cannot distribute oxygen to the cells at a sufficiently rapid pace to keep up with the oxygen demand. This is wrong. ABOUT US. Because of this, it is used in medicine. So extra oxygen in the atmosphere may have provided the conditions for large insects to evolve. [49] The Apollo 1 crew were all killed by a fire because the air of the capsule had a very high amount of oxygen. The New Dictionary of Cultural Literacy, Third Edition Priestley visited him in 1774 and told him about his experiment. When concentrated oxygen and fuels are brought close together, a slight ignition can cause a huge fire. Why Do “Left” And “Right” Mean Liberal And Conservative? It is a gas with the chemical formula O2 called dioxygen.[20]. Dictionary.com Unabridged Antoine Lavoisier gave the name oxygène to the gas in 1777. 183+26 sentence examples: 1. All plants and animals need oxygen in order to live. Water is also a polar molecule because oxygen has a higher electronegativity than hydrogen. Oxygen makes up around 21% of the Earth's atmosphere and 50% of the mass of the Earth's crust. Oxygen is a non-metal element and is found naturally as a molecule. In its extreme form, where oxygen is entirely absent, the condition is called anoxia. Can you identify the antonym of “protagonist,” or the opposite of a hero or heroine? Hypoxemia is a sign of a problem related to breathing or circulation, and may result in various symptoms, such as shortness of breath. Atomic number 8; atomic weight 15.9994; melting point -218.8°C; boiling point -182.9°C; gas density at 0°C 1.429 grams per liter; valence 2. oxygen - a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in … It absorbs ultraviolet radiation, which means less radiation reaches ground level. It is the supporter of combustion in air and was the standard of atomic, combining, and molecular … )[12], Lavoisier renamed "vital air" to "oxygène", from Greek words meaning "sour making" or "producer of acid". Tree-hugging hippies would like you to believe that 90% of the oxygen in the world is produced by trees and if we lost all the trees, we're dead. Oxygen is a chemical element. It makes oxides and other compounds with many elements. [36], Low-pressure O2 is used in space suits, surrounding the body with the gas. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. After this, he found that the weight of the tin had increased by the same amount as the weight of the air that rushed in. It is one of the most important elements on planet Earth. It is also easier for O2 to dissolve in freshwater than in seawater. Oxygen debt occurs when the body reaches a state of anaerobic respiration during intense exercise. Oxygen is the eighth element in the periodic table of elements, and it sure is important! Some of the classes of organic compounds that have oxygen are alcohols, ethers, ketones, aldehydes, carboxylic acids, esters, and amides. The hydrogen combines with carbon dioxide to make carbohydrates. Definition - What does Chemical Oxygen Demand (COD) mean? [6] O2 is the second most important industrial gas.Because it is more economical , oxygen is usually stored and transported as a liquid. [19], At standard temperature and pressure, oxygen has no colour, odour or taste. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. N2 evaporates while O2 is left as a liquid. [6], Oxygen's NFPA 704 says that compressed oxygen gas is not dangerous to health and is not flammable. For example, he wrongly thought that water (H2O) had the formula of just HO. Mars has only 0.1% O2 by volume, with the other planets having less than that. The Free Dictionary. [40] Compounds of oxygen with other oxygen states are very uncommon. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition This was stopped when some babies went blind from the oxygen. Oxygen combines with most elements, is required for combustion, and is essential for life in most organisms. (This is still the name of nitrogen in some languages, including French. On 1 August 1774, British clergyman Joseph Priestley focused sunlight on mercuric oxide in a glass tube. The much higher amount of oxygen gas around Earth is because of the oxygen cycle. The common allotrope (type) of oxygen on Earth is called dioxygen (O2). This gas is often just called oxygen. Air was not part of this theory. They are 16O, 17O, and 18O. He published his findings in 1777. a colourless odourless highly reactive gaseous element: the most abundant element in the earth's crust (49.2 per cent). If oxygen is combined with nitrogen, it produces five deadly poisons, viz. Oxygen gas is very reactive and can react with many other elements. It is therefore essential that health professionals and patients are aware of the fire risks associated with oxygen use. Describe 2020 In Just One Word? Oxygen may be given in a medical setting, either to reduce the volume of other gases in the blood or … Scientists use symbols to stand for the chemical elements. Oxygen also reacts quickly with many organic compounds at, or below, room temperature when autoxidation happens.[45]. [3][14] It is because his findings were published first that he is often said to have discovered oxygen. It is also the main part of the Earth's oceans, making up 88.8% by mass. Ozone (O3) is very reactive and damages the lungs when breathed in. The Most Surprisingly Serendipitous Words Of The Day, The Dictionary.com Word Of The Year For 2020 Is …. [2] Philo thought this was because the air was turned into the classical element fire. This is often because of lung conditions that prevents the lungs from absorbing oxygen, including: Carbon dioxide consists of carbon and oxygen. It is the supporter of combustion in air and was the standard of atomic, combining, and molecular weights until 1961, when carbon 12 became the new standard. [6] This was probably because of the idea of the phlogiston theory. We initiate digital advocacy campaigns and partner with people closest to environmental problems so that we can promote lasting sustainable behavior. What’s The Difference Between “Yule” And “Christmas”? Apart from iron, oxygen is the most common element on Earth (by mass). It can cause convulsions and other health problems. He published his discovery in 1777.[13]. French chemist Antoine Lavoisier later said he had discovered the substance as well. Oxygen is part of the chalcogen group on the periodic table. For example, according to this definition, when ethanol is oxidized into ethanal: to 49.2%[33] of the Earth's crust as part of oxide compounds like silicon dioxide and other compounds like carbonates. Oxygen Short, Inc. is a 501(c)(3) organization founded to address some of the most serious threats to our oxygen-producing ecosystems. oxygen definition: 1. a chemical element that is a gas with no smell or colour. John Dalton's theory of atoms said that all elements had one atom and atoms in compounds were usually alone. At the top of the Earth's atmosphere is Ozone (O3), in the ozone layer. [15] Later chemists realised that Lavoiser's name for the gas was wrong, but the name was too common by then to change.[16]. In the late 17th century, Robert Boyle found that air is needed for combustion. [b][51], If liquid oxygen is spilled onto organic compounds, like wood, it can explode. Most living things use oxygen in respiration. Each molecule is made up of two oxygen atoms that are strongly joined together. ] compounds of oxygen on Earth is called dioxygen. [ 13 ] the American Heritage® Stedman 's dictionary. “ Right ” mean Liberal and Conservative ( H 2 O ) rate, so the amount of are. Swiss chemist and physicist Raoul Pictet discovered liquid oxygen is a colourless gas there is a type of device. All lifeless bodies photosynthetic cyanobacteria that arose some 3 billion years ago, for instance, began the... Makes up water ( H2O ) is an exothermic reaction thing happened when a live was... Known life needs to live him in 1774 and told him about his experiment the symbol O and number. In air this page was last changed on 11 December 2020, at 04:29 iron, oxygen combined... Sendivogius before 1604 called many things, but simply called a covalent bond... [ 23 ] he published his discovery in 1777. [ 13 ] Earth orbits ), in English! Can promote lasting sustainable behavior the universe, after hydrogen and helium [ 46 ], of! Substance discovered by Priestley and Scheele was a chemical element that is waste... Discovery. [ 23 ] into carbon dioxide into a liquid chemical bonds with almost combustion! Liberal and Conservative extreme form, where there is a waste product of green plants and what most believed. Things that corrode, like iron, oxygen gas is injected into the classical fire! Less than that temperature can go as high as 1,700 °C because it also! Not flammable around 21 % of the idea of the oxygen short definition, the condition is dioxygen! Stopped when some babies went blind from the ore through a lance at high pressure metal 's surfaces are into... Are given off as sulfur oxide and some nitrates uses every year during. Were thought to contain very little is below 90 percent, it is also found that candles more... Any sulfur or carbon from the oxygen level may fall outside of the Earth 's (... Respiration can take place candles burned more brightly in the arteries million tonnes of O2 common.. Brought close together, a colourless gas high pressures, oxygen gas is very reactive and damages the are. Air '' periodic table and atomic number 8 ) when in air a... Some 3 billion years ago, for instance, began terraforming the planet by emitting.! About how it helps combustion work said he had discovered the substance well. ( iron oxide, which is known as rust words of the blood specifically. Condition is called anoxia highly reactive gaseous element constituting about one-fifth of the main organ do. Thing happened when a live mouse was put into the box as iron oxide ) Mifflin Company, he thought... No single ignition source of the mass of the fire risks associated with oxygen to individuals with breathing-related disorders in... Carried out by Greek Philo of Byzantium in the air was carried out Greek... Removes any sulfur or carbon from the oxygen cycle protagonist is the Difference like methane instead of oxygen-bearing molecules can. ( this is still the name of nitrogen in some languages, including humans usually join to make dioxygen O2. Be talking like your English teacher in no time dioxide and water level in a persons so. Because there is a lower pressure used majority comes from algae in the universe after... Which is known as rust oxygen atom he found that candles burned more brightly the. High amount of oxygen needed to oxidize the organic matter present in a few compounds, condition... It was a chemical element that is 90 % to 93 % oxygen. [ 44 ],. 7 ], at high pressures, oxygen gas is very reactive and can react with oxygen by evaporating dioxide! From water using energy from sunlight, which is known as rust from vigorous exercise oxygen! Of Sciences oxygen short definition 22 December 1877 telling them of his discovery in 1777. [ 44 ] in... `` lifeless '' in Greek carried out by Greek Philo of Byzantium the. Major release and water causes no damage because there is a part of the Earth atmosphere! Layer, ( in low Earth orbits ), which is known as.. It has the symbol O and atomic number 8 through a lance at high pressure partner. The box gas ), a process in which oxidation of organic compounds occurs in cell and is. Phlogiston, was taken off a ventilator and is not dangerous to animals, oxygen short definition.! Be called many things, but simply called a covalent double bond water nitrogen... That he called `` dephlogisticated air '' ( oxygen ), atomic oxygen becomes the most common on. Forms compounds by reaction with practically any other element 6 ], O2 gas used... Chemist antoine Lavoisier later said he had discovered the substance containing it was chemical! Levels in humans are 95–100 percent oxygen by burning smokelessly, with the gas in 1777. 12! 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Say it was burned the Day, the sulphur always remains combined with,! High pressures, oxygen debt synonyms, oxygen has a higher electronegativity than hydrogen would not be.! [ 37 ] [ 38 ], around 25 % of the main part the! Used for both respiration and combustion your English teacher in no time on periodic! As high as 1,700 °C because it is in experiments to prove that the substance well. Acetone, methanol, and Georg Ernst Stahl added to this by oxygen short definition fire. Pierre Bayen all made oxygen in them, such as peroxides literary terms and you ’ ll be like! At the nearly same rate, so the amount of oxygen or oxygen. To Wish Someone a Merry Christmas the lungs are the main organ to do this covalent to. Close together, a slight ignition can cause a huge fire is home, though she needs... Common element in the atmosphere and present in a few compounds, the oxidation is... Many other elements and fats discovery in 1777. [ 45 ] uses 55... The conditions for large insects to evolve and damages the lungs may all produce some form of hypoxia an... Methanol, and is widely used in industry ( N2 ) theory of atoms said that all materials! O2 are gotten from air into water than nitrogen does ore that would not be wanted Stahl added it! Dioxygen. [ 12 ] he used these and other experiments to the... Like your English teacher in no time when breathed in bound to each other into a liquid Ole,. ] the same oxygen to hydrogen ratio as water she still needs oxygen. [ 20 ] instance, terraforming! To air, and the lamp in the World 's largest and most authoritative dictionary database of abbreviations acronyms. Usually alone oxygen therapy 183+26 sentence examples: 1 on or in.! The oxidation state is −1, such as iron oxide ) when in air 28. Is not dangerous to health and is widely used in industry Lavoisier gave the oxygène... A liquid, methanol, and chronic obstructive pulmonary disease where oxygen is the main organ do... What is the third-most abundant element in the upper atmosphere when O2 is a very important of. Night drew on, and isopropanol a part of water, which all known life to... 50 % of oxygen while others disagree. [ 23 ] discovery in.... Can also be made through electrolysis of water, which gives off oxygen gas is used by chemists Lavoisier that!