The fundamental units of oxygen gas, which consist of two oxygen atoms bonded together, are molecules but not as a compound. Oxygen is a major component in life processes.
A gas that has no color or smell. Oxygen makes up one-fifth of the air. Living things need oxygen to live, and fires need it to burn. Oxygen is a chemical element. Green plants make this gas when they make food.
an element that at standard temperature and pressure is colorless, tasteless and odorless; required for nearly all combustion and in the cellular functioning of animals
substance released into the air by plants as a result of photosynthesis. Plants take in carbon dioxide and release oxygen while humans take in oxygen and release carbon dioxide.
A colorless, odorless gas that is released by plants into the air, is essential to animals for breathing, and is highly flammable when it reacts with other substances.
A colorless, odorless, tasteless chemical element. Oxygen is essential for life processes.
an element essential for plant and animal respiration; essential to life
A colorless, tasteless, ordorless gas that is the second most abundant consituent of dry air. It comprises 20.946%.
A colourless, odourless gas which is necessary for life in most organisms and makes up about 20% of the atmosphere.
A gaseous non-metallic element. It makes up approximately 21% of the atmosphere.
Colourless odourless gas present in many minerals.
A gas that makes up 20% of the atmosphere. It play an essential role in the ability of the body to produce energy from food
Colorless, odorless gas essential for all life processes. It's the most important component of air.
essential element of life; a colorless, odorless gas that comprises 21% of earth's atmosphere. Abbreviated O2.
An element that is used in the formation of silicon dioxide.
A gaseous element given the chemical symbol O, and occurring as O2, which makes up approximately 20% of the earth's atmosphere. Necessary for combustion, and measured by an exhaust analyzer to identify lean fuel mixtures.
A colorless gas comprising 21% of the atmosphere by volume and essential to most combustion and combustive processes.
a gas found in our atmosphere
a gas in the air which people and animals need to survive When a tree makes its food, it gives off oxygen.
is an element which, at atmospheric temperatures and pressures, exists as a colorless, odorless, tasteless gas. Its outstanding properties are its ability to sustain life and to support combustion. Although oxygen is nonflammable, materials which burn in air will burn much more vigorously and create higher temperatures in oxygen or oxygen-enriched atmospheres.
One of the nine macronutrients. Oxygen is a major component of organic molecules, which are the building blocks of all organisms. Humans breath air, plants "breath" carbon dioxide (CO2). Respiration breaks CO2 into carbon and oxygen for use. Plants also take in oxygen through their roots.
A chemical element essential for sustaining life.
A gas that exists naturally in the atmosphere and is produced by plants during photosynthesis that humans and other animals breathe.
Oxygen is necessary for respiration, and is present in everything from sugar to rust to fat, but is toxic when pure. O is element #8, and has a charge of -2. (And rarely, a charge of -1 when it forms peroxide ions). O has an electronegativity of 3.44, making it the second most electronegative element. At STP, O has a density of 1.429 g/L. O melts at 54.8 K and boils at 90.188 K. An active gas, Oxygen makes up 1/5 of the Earth's atmosphere. This gas is fairly common in the universe. P Q R
A gaseous element that is a key building block to life. Required when you want to burn something.
The essential element in the respiration process to sustain life. The colorless, odorless gas makes up about 20 percent of the air, by weight at sea level.
A gas which forms about 21%, by volume, of the atmosphere. It is chemically very active and is necessary for combustion. The combination of oxygen with other substances generally produces heat.
O2 - The gas required by the body for metabolism; it enters the body and is transferred to the blood by the lungs.
an element that is found free as a colorless, tasteless, odorless gas; forms about 21 percent of the atmosphere; is capable of combining with almost all elements; and is necessary for life
A non-metallic element with the symbol, O. It is found in our atmosphere as a diatomic gas, o2. It constitutes about 21% of our atmosphere. Essential for respiration by animals and plants and combustion.
the essential element in the respiration process to sustain life. This colorless, odorless gas makes up about 21 percent of the air. Oxygen may be prescribed if your lungs are not getting enough oxygen to your blood. Breathing prescribed oxygen increases the amount of oxygen in your blood, reduces the extra work of the heart and decreases shortness of breath.
A colorless, odorless and tasteless gas needed for life. Afrer air is inhaled, oxygen is sent to the blood and to the cells for energy.
a colorless, tasteless, odorless, gaseous element that constitutes 21 percent of the atmosphere and is found in water, in most rocks and minerals, and in numerous organic compounds What is an Ecosystem
the most abundant element in the earth's crust, and the second most abundant element in the atmosphere.
A gaseous element which makes up approximately 20% of the earths atmosphere. It is usually found in the molecular ... form. Oxygen is the most abundant element on earth.
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
A gas in the air and in the water which all lving things must have to live.
A gas that has no colour or smell. There is a lot of it in the atmosphere and vital for life.
An atmospheric gas made up of two oxygen atoms that is necessary for respiration
tasteless, colorless element, necessary in soil to sustain plant life.
A gas from the air that the body requires in order to function.
gas needed for aerobic respiration
A gas which makes up a big part of the air around us. All animals must breathe oxygen.
(O2): The gas that is responsible and imperative for supporting life. P p
A diatomic colorless, tasteless, odorless, gas that makes up about 21% of air.
A gas that all animals need to live. Some animals have lungs to get oxygen from the air, others have gills to get oxygen from water.
A gas vital for the growth of yeast cells. A small amount of oxygen is important at the start of fermentation. Too high a concentration of oxygen will lead to oxidation of the wine causing a loss of colour, flavour and aroma.
a colorless, odorless, tasteless, gaseous chemical element.
May be given to make breathing easier.
A colorless, tasteless, odorless, gaseous element. It makes up 21% of the air we breathe and is found in water, in most rocks and minerals, and in many organic compounds. It is an important component of bioluminescence.
a gas vital to most life forms on Earth; a waste product of photosynthesis
A colorless, odorless gas that makes up 21 percent of the air we breathe. Sick or premature babies often need extra oxygen.
A colorless, tasteless gas forming about 21% of Earth's atmosphere and capable of combining with all other elements except the inert gases.
Gas vital to all life on this planet which makes up 21% of air by volume.
A gas present in air that is vital to life.
A gas that makes up part of the Earth's atmosphere. Oxygen is not a greenhouse gas.
A colorless, odorless and tasteless gas that makes up about 20% of the air we breathe (and at least half the weight of the entire solid crust of the earth) and which combines with most of the other elements to form oxides. Oxygen is essential to human, animal and plant life. See the entire definition of Oxygen
gas needed by all living things
a colorless, odorless gas that living things need to breathe.
A gas which is the most important component of the air we breathe. It is vital to energy-producing chemical reactions in the living cells of the body. Breathed into the lungs, it enters the bloodstream and is carried by the blood to the body tissues.
free radicals-toxic chemicals released during the process of cellular respiration and released in excessive amounts during necrosis of a cell; involved in secondary cell death associated with the ischemic cascade.
a colorless, odorless gas that is essential to the normal function of all cells of the body.
A colorless, ordorless, tasteless gas, that is the most abundant of the elements on earth occuring uncombined to the extent of about 21 percent by volume
An element consisting of atoms with eight protons. Two oxygen atoms combine to make molecular oxygen (O2), and three combine to make ozone (O3). The Earth's atmosphere is 21 percent molecular oxygen.
we need it to oxygenate our bloodstream and live, therefore we have to ensure there is enough in the air we breathe.
a gas that is colorless, odorless, and tasteless; essential to almost all forms of life
A colorless, odorless gas that constitutes 21% of the air we breathe at sea level. Oxygen combines naturally with many other elements to form oxides (i.e., rust on iron). It is essential to life because is provides the energy used to "power" a wide variety of chemical reactions that occur in the cells of the body.
symbol O. A colourless, odourless gas constituting one-fifth of the atmosphere.
A colorless gas invaluable to combustion, steel production and water purification. It can be found in sand, water, and cement.
a gas in the air we breath. Sometimes extra is needed due to illness or a heart defect.
O, a colorless odorless gas.
A base element listed on the periodic table of elements.
A gas in the atmosphere that is essential to most life forms. In humans, oxygen is absorbed into the lungs from the air we breathe. It attaches to hemoglobin in red blood cells in the blood to be carried throughout the body.
A colourless, tasteless and odourless gas that forms 20 percent of the air and which is contained in water and most mineral and organic substances. It is essential to plant and animal life.
in its free form, a colorless, tasteless, and odorless gas in the atmosphere of which it forms about 21% by volume
They are out of breath from the lack of oxygen.
A chemical element consisting of eight protons, eight neutrons and eight electrons. Two hydrogen atoms combine with one oxygen atom to form a molecule of water.
Gas used to support combustion of fuel gases in combustion thermal spray processes. Achieves much higher flame temperatures than using air.
O2, gas vital for all life on this planet; makes up 21% of air by volume.
A colorless tasteless odorless gaseous element, occurring naturally in air, water, and most minerals and organic substances, and essential to plant and animal life.
Colorless, odorless gas that makes up about 20 percent of the air we breathe. It is essential to life because it is used for the chemical reactions that occur in the cells of the body.
A nonmetallic element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O2, and in many compounds such as water and iron ore. It combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Atomic number 8; atomic weight 15.9994; melting point -218.4°C; boiling point -183.0°C; gas density at 0°C 1.429 grams per liter; valence 2
A colorless gas that is approximately 21% of the air we breathe at sea level. It energizes every cell of the body, is required for all organ functions, and is critical to the survival of all human beings.
the element that energizes the body's chemistry.
delignification, or oxygen bleaching is a stage in pulpmaking during which the lignin content of pulp is reduced by means of oxygen gas (O2) in an alkaline environment.
used in respiration, the process in which organisms release stored chemical energy.
atomic symbol, O, oxygen is the 8th element in the periodic table (atomic number 8) with an atomic weight of 16.00. Oxygen is a group VIB element and is an oxidizer. Oxygen is used to oxidize silicon and in etching and stripping systems.
Oxygen is one of the chief constituents of the atmosphere of which it forms approximately one fifth. It is odorless and invisible. Although oxygen itself does not burn it is extremely efficient in supporting combustion, nearly all other chemical elements combine with it under evolution of heat. It has many uses in industry and is essential to the BOS (Basic Oxygen Steelmaking Process).
An organic peroxide that supplies oxygen fuel. (tissue respiration). Brightening and a mild antiseptic.
A gas that is used by cells in the body for the process of metabolism. The lungs serve to add oxygen to the blood through respiration.
This odorless, tasteless, colorless gas supports life.
O2, - a colorless, tasteless, odorless gas that is 1/5 of the volume of the atmosphere.
a colorless, odorless, tasteless gas that is the most plentiful element in the Earth's crust. It was discovered in 1772 by Swidish chemist Carl Wilhelm Scheele.
A colorless gas in the atmosphere that is essential for animal respiration
gaseous element making up about 20% of the air, which is needed by living organisms for respiration Humans as organisms
A colorless, gaseous, tasteless, element (O) that makes up 21% of the atmosphere. Return to .
(O2) A colorless, tasteless, odorless gas that is the second most abundant constituent of dry air, comprising 20.946%.
a gas that is colourless, odourless, and tasteless; essential to almost all forms of life
Oxygen is an odourless, colourless gas that makes up about 20% of the air we breathe.
An element with the atomic symbol O and atomic number of 8. Oxygen freely combines with numerous other elements to create various common substances. Oxygen is required for combustion to occur.
Oxygen (IPA: ) is a chemical element with the chemical symbol O and atomic number 8. On Earth it is usually bonded to other elements covalently or ionically.
