Any compound that contains either the O2- ion or oxygen with an oxidation state of -2, such as Li2O or H2O
- A metal-oxygen compound Most magnetic coatings are combinations of iron or other metal oxides, and the term has become a general one for the magnetic coating on tape or disk
A mineral compound characterized by the linkage of oxygen with one or more metallic elements, such a spinel, MgAl2O4
An oxide is a compound of oxygen and another chemical element. a substance which is produced when a substance is combined with oxygen (oxygène + acide ). Any of a large and important class of chemical compounds in which oxygen is combined with another element. Metal oxides contain a metal cation and the oxide anion (O2^-); they typically react with water to form bases or with acids to form salts. Oxides of nonmetallic elements are volatile compounds in which a covalent bond joins the oxygen and the nonmetal; they react with water to form acids or with bases to form salts. A few substances (e.g., aluminum, zinc) form amphoteric oxides, which form salts with both acids and bases. Certain organic compounds form oxides in which the oxygen is covalently bonded to an atom of nitrogen (amine oxides), phosphorus (phosphine oxides), or sulfur (sulfoxides) in the organic molecule. calcium oxide deuterium oxide nitric oxide nitrous oxide oxide mineral
A chemical compound, the combination of oxygen with a metal forming a ceramic; examples - aluminum oxide, zirconium oxide
One of several minerals containing negative oxygen ions bonded to one or more positive metallic ions
A chemical compound of oxygen with another element Hydrated (water-including) iron oxide is called rust; it does not cling tightly to the underlying metal, so the oxidation process is progressive and iron easily rusts away Aluminum oxide is a hard, transparent compound which clings tightly to the underlying metal and protects it against further oxidation
A casual term for silicon dioxide (otherwise known as glass) This material is used in semiconductor processing as an insulator and to cover and protect or "passivate" the device
metal oxides are used as ceramic coloring agents, often suspended as fine articles or soluble salts in a glaze
An oxide is a molecule like K2O, Al2O3 They are the most basic form of matter that kiln temperatures can normally decompose materials into Thus for calculation purposes we view fired glazes and ceramic materials as made of oxides An oxide is a combination of oxygen and another element (designated "R"), there are only about 12-15 common oxides that we need to learn about Each has specific effects on a fired glass Glaze formulas compare relative oxide amounts Oxides are divided into three categories that recognize their functions There is a correlation between the amount of oxygen in each class and the contribution that class of oxide makes Fluxes are designated RO, intermediates R2O3 and glass formers RO2
Any naturally occurring inorganic compound with a structure based on close-packed oxygen atoms in which smaller, positively charged metal or other ions occur. Oxide minerals are common in all rock types, whether igneous, sedimentary, or metamorphic
The compound obtained by the reaction of oxygen on iron. Either iron(II) oxide (old term ferrous oxide, chemical formula FeO) or iron(III) oxide (old term ferric oxide, chemical formula Fe2O3). Generally known as rust when hydrated
A name for the chemical compound FeO, iron oxide where iron has a valence of +2. This is the IUPAC preferred nomenclature. The old term was ferrous oxide
A name for the chemical compound Fe2O3, iron oxide where iron has a valence of +3. This is the IUPAC preferred nomenclature. The old term was ferric oxide
Any mixture of the oxides of more than one metal, but especially the blend of plutonium and uranium oxides that is used (as MOX fuel) in nuclear reactors
any oxide of rubidium, but especially the yellow solid Rb2O; it is a strong base, reacting strongly with water to form the hydroxide and with acids to form normal salts
A white, caustic, lumpy powder, CaO, used as a refractory, as a flux, in manufacturing steel and paper, in glassmaking, in waste treatment, in insecticides, and as an industrial alkali. Also called lime
Fe2O3 is one of the potters favorite colorants, when combined with the right glaze and firing iron oxide can produce greens, browns, blacks, yellows, oranges, subtle blues and grays Most of the best color responses for Iron in a glaze need a reduction firing Iron is also a useful colorant in clay bodies and is best introduced by adding high iron clays to the clay recipe
A compound consisting of iron (Fe) combined with oxygen (O) It is the rust you see on iron or steel left exposed to oxygen in the air Hematite (Fe2O3) and Magnetite (Fe3O4) are minerals of iron oxide
A white powdery compound, MgO, having a high melting point (2,800°C), used in high-temperature refractories, electrical insulation, food packaging, cosmetics, and pharmaceuticals
A colorless, poisonous gas, NO, produced as an intermediate during the manufacture of nitric acid from ammonia or atmospheric nitrogen and as a product of cellular metabolism. In the body, nitric oxide is involved in oxygen transport to the tissues, the transmission of nerve impulses, and other physiological activities. Colourless, toxic gas (NO), formed from nitrogen and oxygen by the action of electric sparks or high temperatures or, more conveniently, by the action of dilute nitric acid on copper or mercury. First prepared 1620 by Jan B. Helmont, it was first studied in 1772 by Joseph Priestley, who called it "nitrous air." An industrial procedure for the manufacture of hydroxylamine is based on the reaction of nitric oxide with hydrogen in the presence of a catalyst. The formation of nitric oxide from nitric acid and mercury is applied in a volumetric method of analysis for nitric acid or its salts. The gas is synthesized via enzyme-catalyzed reactions in humans and other animals, where it serves as a signaling molecule. Among its numerous biological roles, it causes dilation of blood vessels and as such is an important regulator of blood pressure. Nitric oxide is one of the components of air pollution generated by internal-combustion engines
A potent vasodilator, NO is released by endothelial cells, signaling smooth muscle cells to relax Nitrates and nitrites mediate their pharmacological effects by releasing NO Press the "back" button to return to where you came from
A gas formed by combustion under high temperature and high pressure in an internal combustion engine; it is converted by sunlight and photochemical processes in ambient air to nitrogen oxide NO is a precursor of ground-level ozone pollution, or smog
A gas formed by combustion under high temperature and high pressure in an internal combustion engine; changes into nitrogen dioxide in the ambient air and contributes to photochemical smog
A gas formed by combustion under high temperature and high pressure in an internal combustion engine It changes into nitrogen dioxide in the ambient air and contributes to photochemical smog
A gas produced by bacterial action in the soil and by high temperature combustion Nitrogen oxide is a component in the production of photochemical smog This colorless gas has the chemical formula is NO
A gas formed in great part from atmospheric nitrogen and oxygen when combustion takes place under high temperature and high pressure Not in itself a pollutant, in the ambient air NO converts to nitrogen dioxide, a major contributor to photochemical smog Also see photochemical smog
A small, membrane-permeant molecule that is thought to serve as a cellular signal Nitric oxide (NO) is formed by the enzyme nitric oxide synthase from the amino acid arginine
(NO)-precursor of ozone, NO2, and nitrate; usually emitted from combustion processes Converted to nitrogen dioxide (NO2) in the atmosphere, it then becomes involved in the photochemical process and/or particulate formation
A gas formed by combustion under high temperature and pressure in an internal combustion engine It changes into nitrogen dioxide in the ambient air and contributes to photochemical smog Back to Top
a trace species that plays an important role in both tropospheric and stratospheric chemistry Natural sources of NO include emissions from microbes in soils, forest fires, and lightning discharges Unpolluted levels of NO are in the 0 01-0 05 ppb range, but emissions from high-temperature fuel combustion sources can increase levels by a factor of 1000 or greater, to 50-750 ppb in highly polluted areas NO is important in urban areas, where it can react with hydrocarbon species to form ozone and other secondary pollutants, which can jave negative health effects on humans and plants NO is also soluble in water, and contributes to acid rain (nitric acid) deposition In the stratosphere, NO is important in the catalytic destruction of ozone, and is very important in the series of events leading to polar ozone depletion during the Arctic and Antarctic springtime
one of the three major greenhouse gases responsible for climate change (see greenhouse gases) Soils and oceans are the primary natural sources of nitrous oxide Humans contribute to nitrous oxide emissions through soil cultivation and the use of nitrogen fertilizers, nylon production and the burning of organic material and fossil fuels Combustion and biomass burning are sources of nitrous oxide emissions Agricultural practices may stimulate emissions of nitrous oxide from soils and play a major role in the build-up of nitrous oxide in the atmosphere
Gas found in the atmosphere that contributes to the greenhouse effect Sources for nitrous oxide include: land-use conversion; fossil fuel combustion; biomass burning; and soil fertilization Chemical formula for nitrous oxide is N2O
Colorless gas, formula N2O, released by bacterial activity at the earth's surface It has an atmospheric lifetime of about 160 years and is currently present at a level of about 330 ppb Its atmospheric significance is that it is transported into the stratosphere, where its reaction with excited oxygen atoms (O1D) is the major source of active nitrogen; it is also a major greenhouse gas In large amounts, it has anesthetic properties (laughing gas)
An important greenhouse gas, with a global warming potential of 320 times as much as carbon dioxide according to the IPCC The primary source of N2O emissions under current conditions are estimated to come from agricultural soils that have high nitrogen levels due to the application of fertilizers at times or in amounts that exceed the ability of vegetation to quickly absorb the nitrogen into plant metabolism The conversion of cropland to forest, accompanied by a significant reduction in the use of commercial fertilizers, may be an important contributor to reducing emissions of N2O from that land, but scientific methods of estimating that impact are not well developed at this time Therefore, NCOC will not attempt to calculate the impact of afforestation projects on N2O emissions at this time
A greenhouse gas given off mainly by current agricultural methods; its direct global warming potential over 100 years is 270 times greater than that of carbon dioxide per volume
a composed of two nitrogen molecules and one oxygen molecule It is a bi-product of the natural process of vegetation decay, particularly rice paddies It is released by nitrogen-based fertilizers which are heavily used today Nitrous oxide is also produced by the burning of coal and the exhaust from cars Nitrous oxide has the same effects of CFCs, but N2O molecules absorb 250 times as much heat as carbon dioxide
Nitrous oxide is a compound that is made up of two parts oxygen to one part nitrogen A gas at room temperature and a liquid under pressure When heated, it breaks down into its two elements
Nitrous oxide is comprised of 2 parts nitrogen and one part oxygen (36% oxygen by weight) When the nitrous oxide is heated it breaks down and releases extra oxygen, However, it is not this oxygen alone which creates additional power, but the ability of this oxygen to burn more fuel By burning more fuel, higher cylinder pressures are created and this is where most of the additional power is realized Illegal to use in any NASCAR stock car series Both A J Foyt's and Darrell Waltrip's qualifying times in the 1976 Daytona 500 were thrown out because of evidence of Nitrous Oxide use
A powerful greenhouse gas with a global warming potential of 320 Major sources of nitrous oxide include soil cultivation practices, especially the use of commercial and organic fertilizers, fossil fuel combustion, nitric acid production, and biomass burning
A powerful greenhouse gas Its major sources include soil cultivation practices, especially the use of commercial and organic fertilizers, fossil fuel combustion, nitric acid production, and biomass burning
A controlled mixture of nitrogen and oxygen gases (N2O) that is inhaled by the person in order to decrease sensitivity to pain and/or anxiety Also referred to as laughing gas Click here for more about nitrous oxide
A potent greenhouse gas, the primary anthropogenic emissions of which are thought to come from agricultural fertilizers, and to a lesser degree, fossil fuel combustion and biomass burning It is considered to be 320 times as powerful a greenhouse gas as CO2 over a 100-year time frame Should be differentiated from oxides of nitrogen (NOx)
A gaseous emission that comes from sources such as automobile emissions and other fossil fuel burning sources Recently enacted federal emissions standards for nitrous oxide will have a major impact on Ohio's coal-fired generating plants
A colorless, sweet-tasting gas, NO, used as a mild anesthetic in dentistry and surgery. a type of gas used by dentists to reduce pain = laughing gas. or laughing gas Inorganic compound, one of the oxides of nitrogen. A colourless gas with a pleasantly sweetish odour and taste, it has an analgesic effect when inhaled; it is used as an anesthetic (often called just "gas") in dentistry and surgery. This effect is preceded by mild hysteria, sometimes with laughter, hence the name laughing gas. It is also used as a propellant in food aerosols and as a leak detector
is released by industrial processes, the burning of fossil fuels, and by fertilizer use Nitrous oxide evenutually breaks down into its components, nitrogen and oxygen, but the process takes about 120 years
A powerful greenhouse gas emitted through soil cultivation practices, especially the use of commercial and organic fertilizers, fossil fuel combustion, nitric acid production, and biomass burning This GHG is listed in Annex A of the Kyoto Protocol
A controlled mixture of nitrogen and oxygen gases (N2O) that is inhaled by the patient in order to decrease sensitivity to pain Also referred to as laughing gas
Produced biologically in oceans and soil Activities by humans such as vehicle exhausts, biomass burning, industrial combustion, and chemical fertilizers produce nitrous oxides Nitrous oxide is also used as a mild anesthetic in dentistry and surgery commonly know as "laughing gas"
An amorphous white or yellowish powder, ZnO, used as a pigment, in compounding rubber, in the manufacture of plastics, and in pharmaceuticals and cosmetics. Also called Chinese white, zinc white
A hard white amorphous powder, ZrO, derived from zirconium and also found naturally, used chiefly in pigments, refractories, and ceramics and as an abrasive