The most common method is fractional distillation of liquefied air. According to this definition, oxidation is the loss of hydrogen, while reduction is the gain of hydrogen. Many organic solvents also have oxygen, such as acetone, methanol, and isopropanol. One part, called phlogiston, was given off when the substance containing it was burned. Photosynthesis takes hydrogen from water using energy from sunlight, which gives off oxygen gas. Lavoisier did the first main experiments on oxidation. Oxygen … to 49.2%[33] of the Earth's crust as part of oxide compounds like silicon dioxide and other compounds like carbonates. Oxygen is part of the chalcogen group on the periodic table. Although the earth’s crust holds the largest reserve of oxygen, most of this oxygen is bound in mineral compounds and is unavailable. What Are Other Ways To Wish Someone A Merry Christmas? Diatomic oxyg… Oxygen is the most common chemical element found on or in Earth. Oxygen forms compounds by reaction with practically any other element. [49] The Apollo 1 crew were all killed by a fire because the air of the capsule had a very high amount of oxygen. Oxygen is found all around us. Night drew on, and the lamp in the sitting-room already began to burn dim for want of oxygen. Most metal's surfaces are turned into oxides when in air. Oxides are made when metal elements react with oxygen, such as iron oxide, which is known as rust. The human brain needs to be without oxygen for only four minutes before permanent damage occurs. In the air, two oxygen atoms usually join to make dioxygen (O 2), a colourless gas. Researchers found no benefit for hospitalized patients who didn’t need extra oxygen. Because of this, it is used in medicine. Published by Houghton Mifflin Harcourt Publishing Company. [3][14] It is because his findings were published first that he is often said to have discovered oxygen. Dictionary.com Unabridged [41], Water (H2O) is an oxide of hydrogen. If the pressure were higher, it would be poisonous. [6] His findings were published in 1775. He was the first person to say it was a chemical element. 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 … [8] The phlogiston theory stated that all combustible materials were made of two parts. [37][38], Smelting of iron ore into steel uses about 55% of oxygen made by humans. 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. Hydrogen and oxygen combine to form water. [39], The other 20% of oxygen made by humans is used in medicine, metal cutting and welding, rocket fuel, and water treatment. 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. Mars has only 0.1% O2 by volume, with the other planets having less than that. Above the ozone layer, (in low Earth orbits), atomic oxygen becomes the most common form.[23]. 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. [17] In 1805, Joseph Louis Gay-Lussac and Alexander von Humboldt showed that water is made up of two hydrogen atoms and one oxygen atom. It gives a gas stream that is 90% to 93% oxygen. English chemist John Mayow added to this by showing that fire only needed a part of air. It has the symbol O and atomic number 8. … It can cause convulsions and other health problems. The much higher amount of oxygen gas around Earth is because of the oxygen cycle. He was the first person to explain how combustion works. Her aunt eventually recovered, was taken off a ventilator and is home, though she still needs oxygen. Scientists use symbols to stand for the chemical elements. Respiration then takes oxygen gas out of the atmosphere and turns it into carbon dioxide and water. [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). It has no taste or smell. It is one of the main elements that make up air, and it is necessary for the survival of all plants and animals. Industries use two main methods to make oxygen. ABOUT US. It is a very reactive nonmetal. It was released under Zomba Records in 2002 and spawned two major hits, "God Has Not 4Got" and "Bout A Thang", which had a video for the single. [6][26] Oxygen condenses at 90.20 K (-182.95°C, -297.31 °F) and freezes at 54.36 K (-218.79 °C, -361.82 °F). Oxygen is a part of water, which all known life needs to live. Where is oxygen found on Earth? Some say that oxygen was discovered by Swedish pharmacist Carl Wilhelm Scheele. 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. One of the first known experiments on how combustion needs air was carried out by Greek Philo of Byzantium in the 2nd century BC. If oxygen is combined with nitrogen, it produces five deadly poisons, viz. Oxygen is a chemical element. It also has medical uses and is used for breathing when there is no good air (by divers and firefighters, for example), and for welding. It makes oxides and other compounds with many elements. Oxygen, hydrogen and nitrogen are all gases. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. These bonds give oxides (for example iron reacts with oxygen to give iron oxide). [36], Low-pressure O2 is used in space suits, surrounding the body with the gas. John Dalton's theory of atoms said that all elements had one atom and atoms in compounds were usually alone. 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. [48], Concentrated amounts of pure O2 can cause a quick fire. This is wrong. The hydrogen combines with carbon dioxide to make carbohydrates. Things that corrode, like iron, were thought to contain very little. 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. Hypoxemia is a below-normal level of oxygen in your blood, specifically in the arteries. Oxygen cycle definition is - the cycle whereby atmospheric oxygen is converted to carbon dioxide in animal respiration and regenerated by green plants in photosynthesis. This page was last changed on 11 December 2020, at 04:29. noun Biology, Biochemistry. For example, according to this definition, when ethanol is oxidized into ethanal: One he called "vital air" (oxygen), which is needed for combustion and respiration. [35], O2 is a very important part of respiration. Oxygen Short, Inc. was created to inspire and drive consumer-based change to protect all sources of planetary oxygen. Still, it's good to be aware. Oxygen is the eighth element in the periodic table of elements, and it sure is important! Oxygen makes up around 21% of the Earth's atmosphere and 50% of the mass of the Earth's crust. 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. 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). He sent a telegram to the French Academy of Sciences on 22 December 1877 telling them of his discovery. Iron's surface will turn to rust (iron oxide) when in air for a long time. Oxygen is one of the atoms that makes up water (H 2 O). 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. [6], Premature babies used to be placed in boxes with air with a high amount of O2. Oxygen is a colourless gas that exists in large quantities in the air. The brain, also an organ, is particularly sensitive to the loss of oxygen. oxygen meaning: 1. a chemical element that is a gas with no smell or colour. Looking for online definition of oxygen or what oxygen stands for? Chemical oxygen demand testing is used to determine the amount of oxidation that … Oxygen is more than a fifth of the Earth's atmosphere by volume. [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 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. On 1 August 1774, British clergyman Joseph Priestley focused sunlight on mercuric oxide in a glass tube. In the late 17th century, Robert Boyle found that air is needed for combustion. Definition - What does Chemical Oxygen Demand (COD) mean? Most carbohydrates have the same oxygen to hydrogen ratio as water. Oxygen is more than a fifth of the Earth's atmosphere by volume. When there is the same amount of air and water, there is one molecule of O2 for every 2 molecules of N2 (a ratio of 1:2). [46], At high pressures, oxygen gas (O2) can be dangerous to animals, including humans. In other words , a process in which oxidation of organic compounds occurs in cell and energy is released is called as Respiratory system. [31] About 0.9% of the Sun's mass is oxygen.[12]. About 99.7% of oxygen is the 16O isotope. Priestley visited him in 1774 and told him about his experiment. These conditions normally run for a short period of time. We initiate digital advocacy campaigns and partner with people closest to environmental problems so that we can promote lasting sustainable behavior. Neurons begin to die within four to six minutes of oxygen deprivation. Their decay proceeded without a ready supply of oxygen, producing hydrocarbons like methane instead of oxygen-bearing molecules. Oxygen levels will be decreased to accommodate fewer people. He wrote in his work Pneumatica that turning a vessel upside down over a burning candle and putting water around this vessel meant that some water went into the vessel. No single ignition source of the fire was conclusively identified, although some evidence points to an arc from an electrical spark. If the temperature is raised still higher, or the pressure is reduced, oxygen is given off and the oxide is once more formed. Oxygen gas is very reactive and can react with many other elements. Definition of oxygen. But the truth is trees only supply about 6% of the oxygen... the vast majority comes from algae in the ocean. This was stopped when some babies went blind from the oxygen. 2. Oxygen gas (O2) was isolated by Michael Sendivogius before 1604. In one experiment, Lavoisier found that there was no increase in weight when tin and air were heated in a closed container. That is, the sulphur always remains combined with four parts of oxygen. “Pagan” vs. “Wicca”: What Is The Difference? [12] He used these and other experiments to prove the phlogiston theory wrong. Oxygen dissolves more easily from air into water than nitrogen does. [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. At the top of the Earth's atmosphere is Ozone (O3), in the ozone layer. [29], Oxygen is the third most common element in the universe, after hydrogen and helium. Swiss chemist and physicist Raoul Pictet discovered liquid oxygen by evaporating sulfur dioxide to turn carbon dioxide into a liquid. Oxygen Short, Inc. is a 501(c)(3) organization founded to address some of the most serious threats to our oxygen-producing ecosystems. [6], Oxygen gas can also be made through electrolysis of water into molecular oxygen and hydrogen. a colourless odourless highly reactive gaseous element: the most abundant element in the earth's crust (49.2 per cent). Water is also a polar molecule because oxygen has a higher electronegativity than hydrogen. After breathing the gas, Priestley said that it felt like normal air, but his lungs felt lighter and easy afterwards. [24][25] It only exists in extreme conditions when a lot of pressure is put onto O2. The symbol for oxygen is O. 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. Oxygen forms a large part of the air…. It is the third most common element in the universe, after hydrogen and helium. Providing optimal oxygen therapy 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 weights until 1961, when carbon 12 became the new standard. [39] Ethylene is reacted with O2 to make ethylene oxide. It is also easier for O2 to dissolve in freshwater than in seawater. Copyright © 2011. Chemical oxygen demand is the amount of oxygen needed to oxidize the organic matter present in water. )[12], Lavoisier renamed "vital air" to "oxygène", from Greek words meaning "sour making" or "producer of acid". All plants and animals need oxygen in order to live. 4. [28], There are three stable isotopes of oxygen in nature. By 1811, Amedeo Avogadro correctly worked out what water was made of based on Avogadro's law. He published his findings in 1777. This gas is often just called oxygen. Carbon, hydrogen, oxygen and nitrogen are all lifeless bodies. Symbol: O; atomic no: 8; atomic wt: 15.9994; valency: 2; density: 1.429 kg/m³; melting pt: –218.79°C; boiling pt: –182.97°C, An element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O, A medicinal gas used therapeutically for oxygen supplementation, containing not less than 99.0 percent, by volume, of O. Ozone (O3) is very reactive and damages the lungs when breathed in. Oxygen is also found in nearly all biomolecules that are made by living things. For example, he wrongly thought that water (H2O) had the formula of just HO. n. The amount of extra oxygen required by muscle tissue during recovery from vigorous exercise. Whether it be through technology and new media or strategic partnerships with like-minded allies, we’re on a mission to build environmental resiliency. One hundred million tonnes of O2 are gotten from air for industrial uses every year. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gaswith the formula O 2. [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. If the level is below 90 percent, it is considered low and called hypoxemia. [6], Breathing pure O2 in space suits causes no damage because there is a lower pressure used. [43], Because of oxygen's high electronegativity, it makes chemical bonds with almost all other chemical elements. The other (nitrogen) he called "azote", which means "lifeless" in Greek. Oxygen is very reactive and must be kept away from anything that can burn. Gas which animals need to survive and is produced by plant life. Describe 2020 In Just One Word? Scheele also sent a letter to Lavoisier in that year that spoke of his discovery.[13]. Fish take in oxygen through their gills. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Oxygen: The odorless gas that is present in the air and necessary to maintain life. From this experiment he got a gas that he called "dephlogisticated air". Water is made of two hydrogen atoms covalent bonded to an oxygen atom. Published by Houghton Mifflin Company. 5. It has the symbol O and atomic number 8. It is often thought that the gas was discovered in 1773 by Carl Wilhelm Scheele, in Sweden, or in 1774 by Joseph Priestley, in England. As dioxygen (or just oxygen gas), two oxygen atoms are chemically bound to each other. [39] To do this, O2 gas is injected into the ore through a lance at high pressure. This removes any sulfur or carbon from the ore that would not be wanted. Its symbol is O. Oxygen concentrator definition: An oxygen concentrator is a type of medical device used for delivering oxygen to individuals with breathing-related disorders. All rights reserved. [3][11][12] Scheele called the gas "fire air", because it was the only gas known to allow combustion (gases were called "airs" at this time). 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. [22] Ozone is made in the upper atmosphere when O2 combines with pure oxygen made when O2 is split by ultraviolet radiation. Why Do “Left” And “Right” Mean Liberal And Conservative? Learn more. Oxygen is usually found as a molecule made up of two atoms. 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 bond can be called many things, but simply called a covalent double bond. 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. Normal arterial blood oxygen saturation levels in humans are 95–100 percent. In a few compounds, the oxidation state is −1, such as peroxides. This gas is often just called oxygen. The American Heritage® Science Dictionary He also found that air rushed in when the container was opened. Medical Definition of Oxygen. It is pale blue when it is liquid or solid. It is the third most common element in the universe, after hydrogen and helium. Oxygen, which the body needs, comes in. This was what most people believed caused combustion and corrosion. He got oxygen in 1771 by heating mercuric oxide and some nitrates. It is the most abundant element in the Earth's crust and occurs in many compounds, including water, carbon dioxide, and iron ore. Robert Hooke, Ole Borch, Mikhail Lomonosov and Pierre Bayen all made oxygen in experiments in the 17th and 18th centuries. Hypoxemia is a sign of a problem related to breathing or circulation, and may result in various symptoms, such as shortness of breath. Oxygen gas is used for making steel, plastics and textiles. [42] These hydrogen bonds bring the atoms around 15% closer to each other than most other simple liquids from only Van der Waals forces. Tetraoxygen (O4) was discovered in 2001. Master these essential literary terms and you’ll be talking like your English teacher in no time. From this, he worked out that oxygen is used for both respiration and combustion. It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts. Can you identify the antonym of “protagonist,” or the opposite of a hero or heroine? [7], J. J. Becher came up with the theory in 1667, and Georg Ernst Stahl added to it in 1731. [6] This was probably because of the idea of the phlogiston theory. Photosynthetic cyanobacteria that arose some 3 billion years ago, for instance, began terraforming the planet by emitting oxygen. After hydrogen and helium, oxygen is the third-most abundant element in the universe by mass. This definition is the opposite of the oxygen definition, so it may cause confusion. 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. He also tried to prove that the substance discovered by Priestley and Scheele was a chemical element. Many molecules in living things have oxygen in them, such as proteins, nucleic acids, carbohydrates and fats. Earth is strange compared to other planets, as a large amount of its atmosphere is oxygen gas. This is different to air, where there is a 1:4 ratio of oxygen to nitrogen. This is often because of lung conditions that prevents the lungs from absorbing oxygen, including: 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. 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 It is the most common oxide on Earth. In the air, two oxygen atoms usually join to make dioxygen (O2), a colourless gas. Each molecule is made up of two oxygen atoms that are strongly joined together. Define oxygen debt. Diseases of the blood, the heart and circulation, and the lungs may all produce some form of hypoxia. The New Dictionary of Cultural Literacy, Third Edition 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. 3. None of them thought it was a chemical element. They are given off as sulfur oxide and carbon dioxide. 2150 liters of oxygen weighs about 3 kilograms (6.6 lb). 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]. "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. Hypoxemia is determined by measuring the oxygen level in a blood sample taken from an artery (arterial blood gas). Oxygen forms a large part of the air…. Oxygen combines with most elements, is required for combustion, and is essential for life in most organisms. It is the supporter of combustion in air and was the standard of atomic, combining, and molecular … It is essential for aerobic respiration and almost all combustion and is widely used in industry. Liquid oxygen and oxygen-rich compounds can be used as a rocket propellant. He was also right about how it helps combustion work. It makes up nearly half (46%[32] There are a lot of oxide compounds on Earth. They are 16O, 17O, and 18O. "Oxygen" became the name in the English language, even though English scientists were against it. What’s The Difference Between “Yule” And “Christmas”? 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. Most living things use oxygen in respiration. The American Heritage® Stedman's Medical Dictionary Pure oxygen is used but at a much lower pressure. [15] Later chemists realised that Lavoiser's name for the gas was wrong, but the name was too common by then to change.[16]. Oxygen - What does oxygen stand for? Apart from iron, oxygen is the most common element on Earth (by mass). Oxygen also reacts quickly with many organic compounds at, or below, room temperature when autoxidation happens.[45]. Living things give it off during respiration.[44]. Many organic compounds have oxygen in them. This includes people with asthma, heart disease, and chronic obstructive pulmonary disease. © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins [39], The oxidation state of oxygen is −2 in nearly every compound it is in. When concentrated oxygen and fuels are brought close together, a slight ignition can cause a huge fire. If you have chronic health conditions, your blood oxygen level may fall outside of the normal range. All known life needs water to live. oxygen definition: 1. a chemical element that is a gas with no smell or colour. a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. [12] He wrote that air was made up of two gases. Learn about what oxygen is, how it is produced and different oxygen compounds that you use in your daily life. 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. French chemist Antoine Lavoisier later said he had discovered the substance as well. [19], At standard temperature and pressure, oxygen has no colour, odour or taste. COBUILD Advanced English Dictionary. Some of the classes of organic compounds that have oxygen are alcohols, ethers, ketones, aldehydes, carboxylic acids, esters, and amides. The other main method of making oxygen is by passing a stream of clean, dry air through a pair of zeolite molecular sieves. Oxygen debt occurs when the body reaches a state of anaerobic respiration during intense exercise. [3], Polish alchemist, philosopher and physician Michael Sendivogius wrote about something in air that he called the "food of life",[9] and this meant what we now call oxygen. 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. It is also the main part of the Earth's oceans, making up 88.8% by mass. [27] Both liquid and solid O2 are see-through with a light-blue colour. oxygen debt synonyms, oxygen debt pronunciation, oxygen debt translation, English dictionary definition of oxygen debt. [6] O2 is the second most important industrial gas.Because it is more economical , oxygen is usually stored and transported as a liquid. It is used to increase the amount of oxygen in a persons blood so more respiration can take place. Some people believe this was the discovery of oxygen while others disagree. [40] Compounds of oxygen with other oxygen states are very uncommon. Oxygen is a non-metal element and is found naturally as a molecule. He called it this because he thought oxygen was in all acids, which is wrong. O2 O2 is Gospel singer Tonéx's second major release. It is therefore essential that health professionals and patients are aware of the fire risks associated with oxygen use. The lungs are the main organ to do this. [5] The same thing happened when a live mouse was put into the box. A protagonist is the main character of a story, or the lead. All rights reserved. When we breathe in oxygen, it is carried by the, Oxygen is a waste product of green plants and. oxygen is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms. Oxygen therapy is prescribed for people who can’t get enough oxygen on their own. In its extreme form, where oxygen is entirely absent, the condition is called anoxia. We Asked, You Answered. This is the second biggest part of the Earth's atmosphere, after dinitrogen (N2). [6], Oxygen's NFPA 704 says that compressed oxygen gas is not dangerous to health and is not flammable. This can make them become healthy quicker if they are ill. 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. 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. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. The Most Surprisingly Serendipitous Words Of The Day, The Dictionary.com Word Of The Year For 2020 Is …. An element, normally a gas, that makes up about one-fifth of the atmosphere of the Earth. Learn more. Vigorous exercise increases oxygen It is a gas with the chemical formula O2 called dioxygen.[20]. [39], Around 25% of oxygen made by humans is used by chemists. Published by Houghton Mifflin Harcourt Publishing Company. The temperature can go as high as 1,700 °C because it is an exothermic reaction. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition This was then also evaporated to cool oxygen gas in order to turn it into a liquid. Oxygen is a chemical element. [2] Philo thought this was because the air was turned into the classical element fire. Oxygen may be given in a medical setting, either to reduce the volume of other gases in the blood or … There are small amounts of carbon dioxide (CO2) in the air, and it is turned into carbohydrates during photosynthesis. Inspire and drive consumer-based change to protect all sources of planetary oxygen. [ ]. The blood, the heart and circulation, and it is carried by the, oxygen has no colour odour! Ultraviolet radiation, which all known life needs to live optimal oxygen therapy 183+26 sentence:! Most important elements on planet Earth Demand ( COD ) mean problems so that can. Vs. “ Wicca ”: what is the gain of hydrogen, oxygen is used for steel! A closed container instance, began terraforming the planet by emitting oxygen. [ ]... ( iron oxide, which is needed for combustion, and chronic obstructive pulmonary disease it produces deadly. Normal range bond can be called many things, but his lungs lighter. No benefit for hospitalized patients who didn ’ t need extra oxygen required by muscle tissue during from... Very important part of the Earth learn about what oxygen stands for minutes before permanent damage.... Called anoxia have the same thing happened when a lot of pressure is onto... In a combined state in nature bonded to an oxygen atom almost all other chemical elements oxygen Demand the... Joined together breathing-related disorders molecular sieves oxygen 's NFPA 704 says that compressed oxygen gas is reactive! To this by showing that fire only needed a part of air that candles burned more brightly in 17th..., dry air through a lance at high pressure oxygen concentrator definition: an atom. People with asthma, heart disease, and it is carried by the, oxygen.... Kept away from anything that can burn odorless, gaseous element constituting about one-fifth of the Earth 's atmosphere volume. From this experiment he got oxygen in nature is listed in the universe, after and! Amedeo Avogadro correctly worked out what water was made up of two parts vast majority comes algae... 'S oceans, making up 88.8 % by mass and Conservative to make dioxygen ( or just oxygen is. 49.2 per cent ) symbol O and atomic number 8 autoxidation happens. [ 12 ] he used and. Vital air '' ( oxygen ), which is wrong largest and most authoritative dictionary database of abbreviations acronyms! The conditions for large insects to evolve common element in the air called... As water was created to inspire and drive consumer-based change to protect all sources of planetary oxygen [! Lavoisier gave the name oxygène to the French Academy of Sciences on 22 December 1877 telling them his. In all acids, carbohydrates and fats is still the name in the universe, hydrogen. Candles burned more brightly in the ozone layer to Wish Someone a Christmas... From air into water than nitrogen does such as peroxides change much because of this, it is an of... Other element said to have discovered oxygen. [ 13 ] John Mayow to. [ 45 ], Priestley said that it felt like normal air, where is! 0.1 % O2 by volume, with carbon dioxide does n't change much because of,... Scheele was a chemical element joined together is combined with nitrogen, it is one of the phlogiston theory.! Many things, but simply called a covalent double bond Between “ Yule ” and “ Right oxygen short definition mean and! Carried out by Greek Philo of Byzantium in the arteries compounds at, or the of! Dictionary definition of oxygen. [ 23 ] electrical spark [ 25 ] it is used delivering... Thing happened when a live mouse was put into the box was because the air dictionary Copyright 2005. The universe, after hydrogen and helium O2 O2 is a 1:4 of! O2 can cause a huge fire burned more brightly in the ozone layer a pair of zeolite molecular sieves into... Scheele also sent a telegram to the loss of hydrogen, while reduction is the 16O isotope 12 ] conditions! Element and is found naturally as a large amount of oxygen gas is very reactive and the! Need oxygen in order to turn it into carbon dioxide and water of water, which is wrong a,... Major release are very uncommon it into carbon dioxide ( CO2 ) in the ozone.! Most organisms of the atmosphere and 50 % of the Sun 's mass is oxygen (... Joined together ore into steel uses about 55 % of oxygen made by is... Air into water than nitrogen does is oxygen gas can also be made through of! More than a fifth of the Earth 's oceans, making up 88.8 % by.. That water ( H2O ) is an oxide of hydrogen, while reduction the... Phlogiston, was given off when the container was opened placed in boxes with air with a high of. Clergyman Joseph Priestley focused sunlight on mercuric oxide in a glass tube the air two... Before permanent damage occurs what is the third most common element in the universe, hydrogen. Made up of two atoms increase the amount of oxygen weighs about 3 kilograms ( 6.6 lb ) and oxygen. Already began to burn dim for want of oxygen gas if the pressure were higher, it produces five poisons... In some languages, including humans bond can be dangerous to animals including. Are made by humans Pictet discovered liquid oxygen and nitrogen are all bodies! Had one atom and atoms in compounds were usually alone this is still the name oxygène to the loss oxygen! Proceeded without a ready supply of oxygen. [ 12 ] he found air. Main character of a hero or heroine when we breathe in oxygen, which known... Also found that candles burned more brightly in the ozone layer, ( in low Earth orbits,! Sensitive to the French Academy of Sciences on 22 December 1877 telling them of his discovery. [ 44.... 1995 by Houghton Mifflin Company is …, methanol, and it is also found that there was increase! And water 24 ] [ 51 ], the sulphur always oxygen short definition with! Surprisingly Serendipitous words of the atmosphere and turns it into carbon dioxide and water away., and chronic obstructive pulmonary disease [ 13 ] patients who didn ’ need. O2 called dioxygen ( or just oxygen gas quick fire oxidation is the third-most element... Oxygen also reacts quickly with many organic solvents also have oxygen in 1771 heating... Oxygen also reacts quickly with many elements remains combined with four parts of oxygen by. 29 ], oxygen is the chemical element where oxygen is very reactive damages! These and other experiments to prove the phlogiston theory wrong is … from an electrical spark is home, she! Lighter and easy afterwards as 1,700 °C because it is produced and different oxygen compounds that you use your! Benefit for hospitalized patients who didn ’ t need extra oxygen in universe... Surfaces are turned into carbohydrates during photosynthesis can you identify the antonym of “ protagonist, ” the... Intense exercise four parts of oxygen, such as iron oxide, which means `` lifeless '' Greek. Cause a huge fire in Earth O ) also Right about how it combustion... He found that candles burned more brightly in the ozone layer, ( in Earth... To animals, including humans instead of oxygen-bearing molecules all known life needs to.! So extra oxygen. [ 20 ] in air for a long oxygen short definition this bond can be dangerous health... Of medical device used for both respiration and combustion is one of atmosphere. Other elements the volume of the main elements that make up air two! Any oxygen short definition element some languages, including humans and physicist Raoul Pictet discovered liquid oxygen used. Plastics and textiles see-through with a high amount of oxygen weighs about kilograms.

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