To rid the water of ammonia, nitrogen compounds and swimmer waste (organic compounds). These organic compounds disable chlorine, are body irritants and have a foul smell. Removal is accomplished by superchlorination or by shock treating with a non-chlorine oxidizer.
The loss of electrons from a compound (or element) in a chemical reaction. When one compound is oxidized, another compound is reduced. That is, the other compound must “pick up†the electrons that the first has lost. Pp
Any chemical reaction in which oxygen combines with another molecule. Oxidation in finished beer produces unpleasant flavours.
The chemical process in which the union of a substance with oxygen takes place.
The process of combining with oxygen ions. A mineral that is exposed to air may undergo oxidation as a form of chemical weathering.
Process during which oxygen combines with another substance.
Process by which oxygen is added to a compound and/or electrons are lost.Oxidation is involved in the derivation of energy from compounds and causes the release of freeradicals.
As used in this report, the reaction of ores or waste with oxygen (usually above the water table); in sulfide ores this results in the release of sulfuric acid that, in the absence of neutralization, mobilizes iron, copper, zinc, and other minerals. (See also redox.)
1. Chemical combination of oxygen with another substance. 2. Decrease in the number of electrons in a compound via reaction with another compound (an oxidizing agent or oxidant).
The loss of electrons from an atom that accompanies the change from a reduced to an oxidized state.
A chemical process where an electron is stripped from a substance, forming a free radical. Unsaturated fatty acids such as DHA are particularly susceptible to oxidation. For instance, rancidity is an oxidative process.
Attack by oxygen causing discoloration, tarnish and corrosion
firing ceramic ware at high temperature and without the manipulation of the fuel/air combustion mixture inside the kiln to remove atmospheric oxygen.
The process by which a molecule or atom loses an electron. Oxidation of cell components by free radicals can accelerate cell death and plays a role in the HD disease process.
The natural tendency of compounds to break down and return to their basic, original forms. This characteristic is both beneficial and detrimental in builders' hardware. Rust and corrosion are detrimental, destructive forms of oxidation. On the other hand, a finish that darkens with use, i.e., oxidized bronze or copper's "patina" are examples of attractive, essentially non-destructive forms of oxidation.
is the loss of an electron or electrons by an atom
the loss of electrons by a species.
a chemical reaction resulting in the increase in valence state of an element. This usually disrupts the crystalline structure of a mineral. Example oxidation of Fe from +2 (ferrous) to +3 (ferric).
A half-reaction in which electrons appear as products.
The loss of an electronic charge from a molecule; reduction is another compound's corresponding gain of an electronic charge (thus the term "redox" reaction). Oxidation does not necessarily require oxygen, but oxygen is often involved. Oxidation generally causes more harm than good in beer by resulting in compounds that contribute off-flavors. Many phenolic compounds are prone to oxidation, but can thus also serve as antioxidants that keep other, perhaps less desirable, compounds from oxidizing.
(1) Chemical attachment of free oxygen to other elements and compounds. One of the types of chemical weathering. (2) Loss of an electron during a chemical reaction from one atom to another.
The adverse effects of exposure to oxygen, whereby oxygen transforms various wine and beer components into compounds which taste harsh or stale. The browning of an apple after it is bitten or cut is a good visual example of the rapid deterioration caused by oxygen exposure. Along with microbiological stability, reduced oxidation is the reason carboys and airlocks are required for secondary fermentation of beer and wine. Oxidation is related sometimes to "aeration" and "oxygenation," which refer to the advantageous influx of oxygen preceding active fermentation.
The process of oxygen taking up electrons resulting in a loss of efficacy in particular products.
Chemical process in which a substance combines with oxygen, e.g. rusting
Decreasing the negative charge of an atom or ion (a charged particle) during radiation therapy.
is a chemical change that involves the addition of oxygen.
(die) Oxidation Chemical reaction where in the simplest case Oxygen (O2) is accepted. During oxidation the substance to be oxidised (electron donator) gives off electrons to the oxydiser (electron acceptor). The oxydiser is at the same reduced (→Reduction). An oxidation is always associated with a reduction and both are parts of the redox reaction.
The development of off-flavors in an oil or fat which is caused by the action of the oxygen in the atmosphere. The oxygen attacks the unsaturated links of the oil and forms hydroperoxides which reacts in a similar way as peroxides, physically tested through peroxide value.
The term oxidation originally meant a reaction in which oxygen combines chemically with another substance. More generally, oxidation is a part of a chemical reaction in which a reactant loses electrons (increase oxidation number). Simultaneous reduction of a different reactant must occur (redox reaction).
The removal of a pair of hydrogen atoms (dehydrogenation) from a molecule.
Oxidation is a common type of chemical reaction in which electrons are formally transfered between atoms in the reactants and products. When iron rusts it is undergoing an oxidation reaction.
Loss of electron density from an atom, as occurs during the addition of oxygen to a molecule or when a hydrogen is removed. Opposite of reduction.
a chemical process in which a substance loses electrons (often accompanied by the gain of an oxygen atom)
Process by which an atom becomes more positively charged. Reactions with oxygen are the most common (e.g., formation of rust on iron).
A chemical reaction in which the double bond on a lipid molecule reacts with oxygen to produce a variety of chemical products. The consequences of this reaction are loss of nutritional value and formation of the off-flavors associated with rancidity.
In a literal sense, oxidation is a reaction in which a substance combines with oxygen provided by an oxidizer or oxidizing agent.
The loss of an electron by an atom or molecule; sometimes the addition of oxygen chemically to a substance. The opposite of reduction, in which an electron is accepted by an atom or molecule.
A redox reaction involving the loss of electrons.
Reaction with the oxygen in the air, causes wine to go bad
The darkening that occurs in some metals as its surface combines with oxygen. This process can be accelerated to create an antiqued look.
Loss of electrons (or electron density) from an atom, most commonly due to addition of oxygen or removal of hydrogen from a molecule. The opposite of reduction.
The chemical process of joining oxygen with another element. In semiconductors, oxidation means the joining of oxygen and silicon to form silicon dioxide (SiO2).
Any reaction in which a chemical joins with oxygen, as rusting or combustion.
The process of taking away hydrogen or mixing with oxygen to create rust, to remove electrons, a chemical reaction.
Combining elemental compounds with oxygen to form a new compound. A part of the metabolic reaction.
The process of uniting a compound with oxygen, usually resulting in an unwanted surface degradation of the material or compound.
Chemical combination of oxygen and the vehicle of a paint that leads to drying.
Combination of a substance with oxygen, usually generating another substance and heat.
a chemical reaction in which a compound loses electrons.
A reaction that occurs usually from prolonged contact with air. It causes a browning and an unpleasant flavour in wine.
Occurs when something is chemically united with certain types of oxygen with the help of an oxidizing agent. Combustion - fire - is the result of oxidation. It also occurs when metals rust or cut apples or potatoes turn brown. (Squeezing lemon juice on apples to prevent discoloration is an example of an antioxidant in action.) In the body, highly reactive free radical forms of oxygen grab onto other compounds in cells, causing structural damage to cell protein or fats or to the DNA within the nucleus. Polyunsaturated fat molecules in cell membranes and LDL cholesterol are particularly susceptible to free radical damage. Oxidized LDL cholesterol changes readily into substances that contribute to lesions in blood vessel walls, building up as plaque that gradually shrinks the circumference of the vessels and makes them less flexible.
A chemical reaction in which oxygen combines with the metal to convert it to its oxide form.
Loss of electrons. Also: raising of oxidation state. See also: Reduction
the act of oxidizing due to the loss of electrons in atoms causing an increase in positive charge.
Any process in which the oxidation number of an atom becomes more positive.
When a ceramic object is fired, the atmosphere in the kiln is crucial to final appearance of the piece. The term ‘oxidation' indicates that the object has been fired in a kiln with an ‘oxidizing' atmosphere - that is one into which oxygen has been allowed to enter. Under these conditions oxygen may combine with the constituents of the glaze and/or body material of the piece. The most obvious effect is upon iron oxide, which may be converted from ferrous oxide (4FeO) to ferric oxide (2Fe2O3) taking on a warm, brownish, tone.
The reaction of oxygen with an oil or fat causing rancidity.
Chemical reaction between a material and oxygen.
a reaction in which a substance loses electrons. In the case of AMD metals oxidation, the oxidizing agent is gaseous oxygen. Metal oxides are formed in the process.
The chemical reaction that occurs when excess sunlight exposure and age can change rug colors. The colors usually affected are brown or black. Generally occurs in vegetable dyed rugs.
Combining with oxygen. Burning is oxidation. A chemical reaction in which oxygen combines with another substance or in which hydrogen atoms or electrons are removed from a substance.
A common form of chemical reaction which is the combining of oxygen with various elements and compounds found in automotive paints.
loss of electrons from molecules in healthy cells, caused by free radicals and leading to loss of vision. Pathological - caused by or having to do with a disease.
Process in which oxygen attacks petroleum fluids. Defined by the shear stress (dynes per square centimeter) required to move one layer of fluid along another over a total layer thickness of one centimeter at a shear rate of one cen‚timeter per second.
Firing with a full supply of oxygen. Electric kilns fire in oxidation. Oxides show bright colors.
1. The combination of oxygen with a molecule with liberation of heat; combustion. 2. Removal of hydrogen from a molecule. 3. Loss of electrons, increasing the positive valence. Oxidation is associated with a loss of energy.
Chemical combination of any substance in which the oxidation state (positive valence) of an element is increased.
chemical reaction with oxygen. Pp
the chemical reaction by which organic matter is "burned" or destroyed, by the action of chlorine, bromine, ozone, hydrogen peroxide or non-chlorine shock. Oxidation may cause minerals such as iron, manganese and copper to form discoloring stains and precipitates, if not treated properly.
Is the action of oxygen (or ozone) on other chemicals, including caulks and sealants. Oxidation causes caulks and sealants to become hard and brittle. Chalking and cracking are the most common indicators of oxidation. (See " UV ")
A chemical reaction with oxygen from the air. Solvent-based paint s dry, or cure, via an oxidation reaction.
A chemical process for removing undesirable compounds from the water.
The effect of uniting oxygen with metal. Rust is a common by-product of oxidation. Oxidation over a period of time can lead to corrosion of the metal. The use of flux in metal working prevents oxidation.
The exposure of wine to oxygen, results in the browning of the colour, loss of grape flavour, and the development of bitterness in wines.
The process of using oxygen in a chemical reaction to release energy.
The forming of an oxide from base metals such as the copper in sterling silver or a karat gold alloy combining, through heat, with oxygen and forming a coating of copper oxide. Not to be confused with the discoloration of silver by sulphur and its compounds.
Is Loss of electrons and the gain of oxygen. (OIL)
Originally, oxidation meant a chemical reaction in which oxygen combines with another substance. The usage of the word has been broadened to include any reaction in which electrons are transferred. The substance which gains electrons is the oxidising agent.
Gain in oxygen or loss of electrons
The normal chemical reaction of many materials in the presence of oxygen in the air. It is accelerated by higher temperature. If the bulk fluid temperature is not too high, this might show up as more rapid darkening or a greater generation of acidic compounds. This is normally slow and can be controlled with the purification media. Excessive heating or hot spots on the other hand can cause irreversible damage and possibly the formation of hard deposits.
The combining of a material with oxygen to form a dofferent substance. This results in the deterioration of the original substance.
Oxidation occurs when an atom loses electrons. It thereby becomes a positively charged ion, and is said to be oxidised.
A reaction in which electrons are removed from a reactant. Sometimes, more specifically, the combination of a reactant with oxygen.
Addition of oxygen to a chemical structure. In oils, oxidation causes rancidity, which is a possible cause for the carcinogenesis of oils.
A chemical reaction that usually involves removing a hydrogen atom from a molecule or adding oxygen to it, or both. (See reduction.)
Reaction in which there is electrons production.
A chemical reaction in which ions are transferring electrons, to increase positive valence.
A form of chemical weathering where oxygen in the air or water react with the rock. For example, rusting.
The process in which a substance combines with oxygen.
Chemical reaction between oxygen and another substance, causing paint film curing, paint film failure or metal rusting.
Left unprotected, painted, polished and chrome surfaces will oxidize. On metal, oxidation appears as rust or tarnish. When paint oxidizes, it will slowly become dull, rough and chalky.
Occurs when oxygen attacks fluids. The process is accelerated by heat, light, metal catalysts and the presence of water, acids, or solid contaminants. It leads to increased viscosity and deposit formation.
Chemical reaction upon exposure to oxygen. Some coatings cure by oxidation, when oxygen enters the liquid coating and cross-links the resin molecules. This film-forming method is also called "Air Cure" and "Air Dry." (Oxidation also causes rust on bare metals.)
A chemical change of an element or compound involving the addition of oxygen to its chemical compound. A chemical change that involves an increase of positive valence or a decrease of negative valence.
A reaction where a substance combines with oxygen produced by an oxidizer or oxidizing agent. It is always balanced by a reduction reaction where oxygen is removed from a compound or atoms as molecules or ions gain elections.
burning in oxygen, normally highly exothermic (heat releasing), but also any increase in oxidization state, (i.e. loss of electrons). Results in the formation of an oxide, rusting or corroding. Various materials, such as copper and brass, may oxidize in the presence of vegetable oil or biodiesel.
The conversion of organic material to a more stable form using bacteria, chemicals or oxygen.
is firing with a full supply of oxygen. This shows brighter colors.
Combining or causing to combine with oxygen.
reaction during which an atom or an ion loses electrons
process of aging that occurs when oxygen comes in contact with wine.
This is a reaction with oxygen, as in combustion. An oxidized molecule is generally one that has lost electrons. Reduction also takes palce during oxidation - if one substance is oxidised then anothr must be reduced.
A chemical process that can occur in the uptake of oxygen.
A chemical process in which a substance combines with oxygen
A specific form of corrosion in which the metal reacts with oxygen present in the atmosphere to form a thin layer of metal oxide on the outer surface of the metal. This film is brittle and cracks easily under vibration or thermal loads, exposing fresh metal underneath.
Transfer of electrons away from a compound, such as an organic contaminant. The oxidation can supply energy that microorganisms use for growth and reproduction. Often (but not always), oxidation results in the addition of an oxygen atom and/or the loss of a hydrogen atom.
The hardening of a coating film by reaction with oxygen. Forming an oxide of a metal by chemical reaction of the metal in the presence of oxygen.
Exposure to oxygen causes wine to go brown and flat. Oxidation creates bitterness and destroys flavour.
The growth of oxide on silicon when exposed to oxygen. This process is highly temperature dependent.
Process by which an oxide (here, silicon dioxide, SiO2, or glass) is grown. Basically, oxygen creates a bond to atoms in a material. Raw silicon, due to its physical properties, grows a native oxide instantly upon exposure to air. This native oxide, as it is referred to, is approximately 5-50 Angstroms (5-50x10-9 meters or 5-50 billionths of a meter) in thickness. Our oxidation process, with use of an oven that basically steams (much like you steam a lobster or vegetables) that device, enables a high quality oxide to grow on the surface. The right combination of water, oxygen, pressure, and temperature make this happen. A number of other things oxidize, besides silicon. For example, iron produces an oxide upon exposure to air--something we commonly refer to as rust.
The chemical change which a substance undergoes when it takes up oxygen.
1) Combination of a substance with oxygen; 2) A reaction in which an element's valence is increased as a result of losing electrons.
The act or process of being oxidized. Oxidize - to combine with oxygen.
A chemical reaction inside cells which uses oxygen to convert food to energy.
OX-e-DAY-shun A chemical reaction that loses electrons. 117
The combination of oxygen with a substance, or the removal of hydrogen from it or, more generally, any reaction in which an atom loses electrons.
The process in which a substance loses electrons and the oxidation state of some element in the substance increases. (Segal, 962)
The chemical reaction that releases nitrogen from a chlorine molecule and eliminates certain undesirable compounds from pool water.
to unite with oxygen, to be reduced, rust Return to Previous Page.
A chemical reaction involving the addition or combination of oxygen with another material. The oxidation of food fats is to be avoided from both aesthetic and nutritional viewpoint.
A chemical reaction in which oxygen reacts with another substance, resulting in a chemical transformation.
Chemical reaction between the surface elements and oxygen causing oxides of the elements to be formed.
Originally, a designation for a slow, fast or explosive type of combination of oxygen with other elements or compounds. Today, oxidation is considered to be the withdrawal of electrons from the atoms of an element.
The chemical reaction between Oxygen (or another oxidizer) and another material.
A chemical process in which either electrons are lost from an atom, or oxygen is added to a molecule. Oxidation may also occur without the addition of oxygen if hydrogen is removed (dehydrogenation.)
A chemical reaction in which an atom or molecule loses electrons or hydrogen atoms.
Reaction of any substance with oxygen.
Oxidation is the addition of oxygen, removal of hydrogen, or the removal of electrons from an element or compound. In the environment, organic matter is oxidized to more stable substances. The opposite of reduction
deterioration of metals due to the appearance of oxygen molecules which modify their chemical structure and weaken them. Therefore oxidised materials loose their strength.
Combination with oxygen or subjection to its action.
Chemical reaction involving the addition of oxygen to a compound. Reaction of oxygen with an unsaturated polymer resulting in loss of strength and other physical properties.
A chemical reaction involving active sources of oxygen (called oxygen free radicals) that damages cells.
loss of electrons by atoms or ions in a chemical reaction.
A chemical reaction, characterized by the transfer of electrons from the oxidized substance to the oxidizer. Originally, oxidation is used for a chemical reaction with oxygen
A process in which certain by-products of oxygen react with nearby molecules. It is thought to cause damage to tissues.
potentially serious calamity that can strike grapes, grape juice and wine if they are over-exposed to oxygen, making them go brown (like a cut apple) and taste flat. Wines suffering from oxidation, sometimes from a less-than-airtight stopper, are oxidized.
The chemical process in which oxygen atoms bond to atoms of a metal or other material, transferring electrons from the metal to the oxidizing agent. Iron oxidizes when exposed to air and moisture, forming iron oxide (rust). Silver oxidizes (tarnishes) when exposed to hydrogen sulfide in the air.
Chemical process in which an oxygen atom is attached to an element or compound and a hydrogen atom is detached from the element or compound: net loss in negative charge.
Any chemical reaction involving oxygen. It gives beer an undesirable flavor.
is the number of electrons an atom gains or loses when combined with anther atom.
A type of atmospheric degradation that occurs when some products combine with oxygen.
A process in which an electron is lost by an atom, molecule or ion.
The firing atmosphere containing lots of oxygen.
removal of electrons from a molecule.
In a broad sense, oxidation is the increase in positive valence or decrease in negative valence of any element in a substance. On the basis of the electron theory, oxidation is a process in which an element loses electrons. In a narrow sense, oxidation means the chemical addition of oxygen to a substance.
The chemical reaction involving the process of combining with oxygen to form an oxide; the deterioration of an adhesive film due to atmospheric exposure; the breakdown of a hot-melt adhesive due to prolonged heating and oxide formation. Back to the top
A chemical reaction in which electrons are given off. In the fuel cell, one hydrogen molecule oxidizes to form two protons.
A change in a chemical characterized by the loss of electrons.
addition of oxygen: a chemical reaction in which oxygen is added to an element or compound. Also, the action of cells turning oxygen into needed energy.
The loss of electrons from a substance involved in a redox reaction. oxidative phosphorylation( fos-for-eh- lay-shun) The production of ATP using energy derived from the redox reactions of an electron transport chain.
A reacting in which oxygen combines with another substance.
The loss of electrons from the outer shell of an atom; often accompanied by the transfer of a proton and thus involves the loss of a hydrogen ion. The loss of electrons or hydrogens in a chemical reaction. PICTURE
A firing where there is either no combustion occurring (electric kiln) or where there is sufficient oxygen in the kiln to allow the fuel to burn cleanly. The atmosphere of the kiln (oxidation, or reduction) dramatically affects the resulting clay and glaze colors, for example; copper in oxidation is green (as is copper oxide) in reduction it becomes red (more like copper metal).
A chemical reaction with oxygen. For example, the drying of oils in oil-based paint, or the rusting of iron or steel.
Any chemical reaction in which oxygen combines with another substance. Oxidation of finished beer produces unpleasant flavors.
A chemical reaction which involves at least one of the following: loss of electrons, the gain of oxygen or the loss of hydrogen. (Rust is the result of the oxidation of iron; the oxidation of fats in foods results in rancidity.)
The reaction of a substance with oxygen; the chemical change involving the loss of electrons from and element in a molecule.
Increasing the amount of oxygen within a molecule.
a chemical reaction in which another substance combines with oxygen by giving up an electron. Oxidants (pro-oxidants) promote this reaction, while antioxidants inhibit it. Oxidation is the process by which carbohydrates, fats and proteins from food are broken down to provide usable energy for the body. See also oxidative stress.
The process by which a compound reacts with oxygen.
A process in which there is loss of electrons from an atom or ion.
(1) A reaction in which there is an increase in valence resulting from a loss of electrons. Contrast with reduction. (2) A corrosion reaction in which the corroded metal forms an oxide; usually applied to reaction with a gas containing elemental oxygen, such as air.
The process by which molecules of toxic oxygen chemically alter, and damage, other chemicals.
When oxygen combines with a substance, altering its structure and changing or destroying its normal function.
The combination of oxygen with other substances to produce new products.
chemical reaction between any substance and oxygen
Any reaction of an element with oxygen. In a narrow sense, oxidation means the taking on of oxygen by an element or compound, and on the basis of the electron theory it is a process in which an element loses electrons.
Oxidation is when, during a chemical reaction, atoms or molecules lose electrons.
a common class of chemical reaction, in which one molecule loses electron(s) to another. Oxidation is electron loss; eg. methane (CH4) can be oxidized to carbon dioxide (CO2).
The reverse of reduction. A reaction in which electrons are transferred from one atom to another—either in the uncombined state or within a molecule.
reaction. The anode reaction, by which electrons are given up to the electrochemical cell.
(4) (a) the removal of one or more electrons from an ion or atom. (b) a process of decomposition in which electrons that hold matter together are transferred to another compound called an oxidant. (c) process of combining with oxygen.
Changes which are brought about by oxygen.
Were oxygen and another substance chemically join. Occurs when indigo yarn comes out of the indigo bath between dips, and is critical for the dyestuff to penetrate the fibre.
A wine that has been subjected to excessive air/oxygen will become oxidized. This is a fault, as an oxidized wine is spoiled and will eventually turn to vinegar.
occurs to unprotected metals that are introduced to saltwater. Rust and then corrosion occurs from a molecular breakdown as the atoms of the element lose electrons and ultimately cohesion.
A chemical reaction that results in the release of electrons by an electrode's active material.
Chemical process of combining an element with oxygen. Rust. See also corrosion.
A chemical reaction involving oxygen; rancid fat is an example of oxidized fat; rust is an example of oxidized iron.
A natural chemical reaction that occurs in the process of oxygen.
Any change caused by oxygen.
The chemical addition of oxygen to a compound. Typically, atmospheric exposure will create surface oxidations. Effects increase as temperature increases.
a high-temperature chemical reaction in which the silicon of the wafer surface reacts with oxygen or water vapor to form an oxide such as silicon dioxide, typically at temperatures greater than 800 degrees C.
A fire during which the kiln chamber retains an ample supply of oxygen. An electric kiln always gives an oxidizing fire though technically it could be called a neutral fire because pure oxidation is not fed into the kiln. Glazes fired in oxidation tend to be brighter that those fired in reduction. When using gas kilns for oxidation firings, the flame is kept as orange burning as possible (the gas and air combination are balanced), so as the interior of the kiln looks clean and not foggy or smoky.
A process by which electrons are lost to an oxidizing agent in order to increase a molecule or ion in positive valence.
to combine or cause something to combine with oxygen
Oxidation can be considered the simple addition of oxygen to a metal, e.g., the addition of atmospheric oxygen to iron to form familiar rust. See Corrosion.
a chemical reaction resulting from exposure to oxygen or other electron-seizing atoms or molecular combination of atoms (see FREE RADICALS). On the cellular level, oxidative reactions are the source of energy, but free radicals and other oxidizing agents can damage cellular components, such as membranes, and interfere with cells' regulatory systems.
A chemical reaction caused by exposure to oxygen that results in a change in the chemical composition of a mineral.
Combining or reacting with oxygen.
Deterioration of metal by chemical reaction to weathering, moisture, chemicals, or agents in the environment, sometimes affecting overlying masonry.
an increase in oxidation state (a loss of electrons).
The loss (or partial loss) of one or more electrons by an atom, molecule or ion.
Loss of electrons by a constituent of a chemical reaction. (Also refers to the corrosion of a metal that is exposed to an oxidising gas at elevated temperatures.)
Release of electrons through the cell's active mass to the external electric circuit. During the discharging process, cadmium is oxidized at the negative electrode of the nickel-cadmium cell or sponge lead is oxidized at the negative electrode of the lead cell
(ox-i-da´-tion) The process of combining with oxygen.
A reaction in which electrons are removed from a reactant, usually because of the addition of oxygen.
the combination of an element with oxygen resulting in destruction of the substance being 'oxidised'. Occurs when chlorine oxidises organic matter introduced by bathers into pool water. Oxidising does not necessarily equate to sanitation nor does sanitation necessarily mean oxidation. E.g. potassium monopersulfate, a non-chlorine oxidizer is an ineffective sanitiser whereas polyhexamethylene biguanide (PHMB) is a sanitiser but not an oxidiser
Loss of an electron by an atom or molecule where oxygen is the electron acceptor.
Various oxidative reactions that occur at every stage in the life of a wine. Excessive oxidation, usually resulting from prolonged contact with air, causes browning of the wine and a marked and unpleasant flavour.
(1) The combination of a substance with oxygen or (2) a chemical reaction in which the atoms in an element lose electrons.
Oxidation is the addition of oxygen or the losing of electrons. Back to top of the page
To combine with oxygen. Slow oxidation is typified by the rusting of a metal.
Relative loss of electrons in a chemical reaction; usually associated with the liberation of energy.
Loss of one or more electrons by an atom, molecule, or ion. Oxidation is accompanied by an increase in oxidation number on the atoms, molecules, or ions that lose electrons.
excessive oxygen absorption in the beer. Destroys flavor and carbonation.
the half of an electrochemical reaction where electrons are released. Oxidation occurs at the electrode called the anode.
combination with oxygen, causing the loss of a hydrogen or of one or more electrons from a molecule thus making it more electropositive.
The addition of oxygen, removal of hydrogen, or removal of electrons from an element or compound. It is the opposite of reduction. In the environment, organic matter is oxidized to more stable substances.
A chemical reaction between oxygen and another substance, causing the original substance to have its properties altered. In the case of aluminum, oxidization reduces its reflectivity.
a kiln firing in which the pottery is exposed to a full supply of oxygen. Electric kilns perform these firings, and oxidation occurs between 704º and 1149ºC. All pottery goes through an oxidation stage during firing, although it is called "oxidation" firing only when the complete process is fulfilled; otherwise, it is known as " reduction" firing.
The presence of oxygen causes wine to decompose, turning it eventually to vinegar. Higher temperatures speed the process.
Chemical surface treatment of a metal for aesthetic purposes. In silver the surface is covered with a layer of black or gray oxide or sulfur.
The "burning up" of organic waste and compounds in the pool water. It also refers to what you may see on your metal pool surfaces if your water is corrosive. Rust is a form of this kind of oxidation.
The process of combining with oxygen, which, in the case of essential oils, is destructive to its properties.
The breakdown of a metal over time as a result of exposure to oxygen and other natural elements.
The process of a substance combining with oxygen or the loss of an electron by a molecule.
A chemical reaction whereby oxygen is used to release or change the state of a metallic ion. A fundamental chemical reaction in the etching process.
a chemical change that occurs in tissue when it combines with oxygen. PERI AREOILAR: around the nipple of the breast. PERIODONTAL DISEASE: disease of the gums caused by bacteria growing on the teeth.
A chemical process where a compound combines with oxygen to form a different compound.
Combining a substance with oxygen.
Rust or corrosion due to exposure to oxygen.
a chemical reaction in which an electron is taken from a molecule of the oxidized substance.
the reaction of a material with oxygen to form a compound of the material and oxygen. Commonly oxygen, O2, or water vapor, H2O, are reacted with silicon, Si, at high temperatures to form silicon dioxide, SiO2.
The act or process of combining with oxygen.
Related to the addition of oxygen to an organic molecule, or the removal of electrons or hydrogen from the molecule
An algebraic increase in the oxidation number; may correspond to a loss of electrons.
The process of combining oxygen with some other substance or chemical change in which an atom loses electrons.
A common form of chemical reaction which is the combining of oxygen with various elements and compounds. The corrosion of metals is a form of oxidation, rust on iron for example is iron oxide.
The process of combining with oxygen. All petroleum products are subject to oxidation to some degree. The reaction increases with rise in temperature. Oxidation produces oil-insoluble oxidized materials, which result in viscosity increase and deposits.
Chemical reaction that occurs between oxygen and various components in beer resulting off-flavor.
a chemical process in which the proportion of electronegative substituents in a compound is increased, or the charge is made more positive, or the oxidation number is increased.
A film or coating that forms, like a skin on the exterior of metal resulting from a reaction with oxygen. Antiquing is a chemical process used to create an oxidized look.
Combination with oxygen, drying, burning, rusting.
Formation of an oxide. Also the deterioration of rubbery materials due to the action of oxygen or ozone.
Oxidation is a reaction in which oxygen combines with a substance. Oxidation also means a loss of electrons. Useful products from air
Oxidation is the combination of a substance with oxygen. Oxidation can also describe a type of reaction in which the atoms in an element lose electrons and the valence is correspondingly increased.
1. The addition of oxygen which breaks down organic waste or chemicals such as cyanides, phenols, and organic sulfur compounds in sewage by bacterial and chemical means. 2. The chemical process whereby electrons are removed from a molecule.
This is a description of a chemical reaction that takes place when oxygen meets and reacts with another substance, resulting in transformation.
The process of combining with oxygen; the changes resulting from the affects of air or oxygen, such as the corrosion of metal surfaces.
The process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction.
In pottery this refers to a process that takes place during the firing stage of production. Oxygen in the air is allowed to enter the kiln to combine with elements in the clay and glaze. This is particularly important so that carbon and sulfur naturally occurring in clay can be "burned off". This takes place between temperatures of 1300 F and 2100 F. While all pottery firings go through a stage of oxidation, when it is allowed to continue throughout the entire process, it is called an "oxidation firing". An opposite effect is known as a "reduction firing". See also firing, reduction.
A chemical process in which electrons are removed from an atom, ion or compound.
A chemical reaction that removes electrons from an atom or molecule.
physiological stress on the body that is caused by the cumulative damage done by free radicals that is held to be associated with aging. Caused by oxygen molecules that have unpaired electrons in their outer shell.
The result of too much oxygen in the wine, causing color change and loss of freshness.
Most noticeable in white wine that has absorbed too much oxygen into the bottle, usually because the cork has dried out and air has crept in. This is why wine bottles must be stored lying down to keep the cork moist and swollen.(Other faults: see Corked and Volatile Acidity )
Occurs when a cell in the body is attacked by a free radical. The cell then becomes unstable due to a change in its chemical structure—a molecule of oxygen is gained, or an atom of hydrogen is lost. An unstable cell may not retain its complete functioning ability. (Remember, antioxidants quench free radicals and keep them from attacking cells—see reduction.)
Process whereby grape juice or wine constituents react with oxygen, resulting in undesirable odor and flavor changes.
A chemical reaction in which electrons from one reactant (the reducing agent) are transferred to the other reactant (the oxidizing agent); the atoms in the element in the losing electrons increase their valence correspondingly.
traditionally defined as a chemical reaction in which oxygen combines with another element to form an oxide. Today it is defined as a chemical reaction in which one or more free electron are released.
Oxidation of an element occurs in a reaction when the element loses electrons. IF YOU CAME HERE FROM A DIFFERENT PAGE, CLICK ON THE BACK BUTTON TO GO BACK TO THE PAGE YOU WERE VIEWING.
a type of chemical reaction in which an electron is attracted away from the oxidized entity. Oxygen is the most familiar oxidizer.
Combination with oxygen; addition of oxygen or other atom or group; removal of hydrogen or other atom or group.
The combining of an element with oxygen.
A common form of chemical reaction which is the combining of oxygen with various elements and compounds. The corrosion of metals is a form of oxidation. Chemical symbol for Phosphorus
The reaction of oxygen with a fat or oil resulting in the development of rancidity.
The chemical reaction of adding oxygen to an element or compound.
A firing process in which extra oxygen is present in the kiln to change the chemical composition of the glazes on clay objects while they are being fired, producing a range of special effects.
Oxidation is the act or state of being oxidized; an increase of positive charges on an atom or the loss of negative charges.
the chemical or biochemical change that occurs when a substance combines with oxygen, for example during combustion and respiration; the release of carbon dioxide and energy from organic compounds
When those unstable free radicals “borrow†an electron from a normal cell in your body, the process is called oxidation. It’s the same process as when metal rusts…or a cut up apple turns brown. Yuck. Free radicals cause oxidation inside your body which is why you want plenty of antioxidants…or compounds that inhibit chemical reactions with oxygen. You know, like POM Wonderful Pomegranate Juice.
To combine with oxygen, producing heat and light (combustion), oxidized compounds (rust, scale), or a breakdown of metallic surfaces.
Firing with a good supply of oxygen so that combustion is complete.
The action or process of oxidating; combination with oxygen; conversion into an oxide or oxygen-compound. Also, the removal of hydrogen from a compound.
A change in the surface of a rubber compound due to its reaction with oxygen.
Corrosion of a metal due to oxygen.
The process in which a molecule, atom, or ion loses electrons to an oxidant. The oxidized substance (which lost the electrons) increases in positive valence. Oxidation never occurs alone, but always occurs as part of the oxidation-reduction (redox) reaction. The reduced substance gains electrons and thereby decreases in positive valence.
Process in which molecules are split to give products that have unpaired electrons.
Chemical combination with oxygen.
The act or process of oxidizing; to combine a substance with oxygen.
The combination of a substance with oxygen forming an oxide, such as rust.
The addition of oxygen to a compound or the reduction of hydrogen.
energy-releasing process involving removal of electrons from a substance, in biological systems, generally by the removal of hydrogen (or sometimes by the addition of oxygen), chemical and/or biochemical process combining carbon and oxygen and forming carbon dioxide (CO2). see REDUCTION.
Any reaction whereby an element reacts with oxygen.
A chemical process in which a metal, such as silver, is blackened as a reaction to oxygen.
The chemical reaction of materials with oxygen
Metal blackened by a reaction with oxygen. The appearance is accomplished by chemical means.
The chemical combining of oxygen with another material. Oxidation can have a variety of effects on the material in question - unprotected steel rusts, copper turns green, etc.
The chemical addition of oxygen to break down pollutants or organizac waste; e.g., destruction of chemicals such as cyanides, phenols, and organic sulfur compounds in sewage by bacterial and chemical means.
The reaction of oxygen with a rubber compound, typically resulting in surface cracking of the rubber material. As oxidation involves the transfer of electrons, reduction in the physical strength of elastomers may also occur from exposure to the oxidizing agent.
Oxidation is a chemical process in which oxygen atoms bond to atoms of a material (like a metal) and electrons are transferred from the oxided material to the reduced material. Iron oxidizes when exposed to air and moisture, forming iron oxide (rust). Silver oxidizes (tarnishes, turing the surface black) when it is exposed to hydrogen sulfide in the air (forming Ag2S, silver sulfide). All About Jewels: Illustrated Dictionary of Jewelry Click on an underlined word for more information on that subject. If the jewelry term you are looking for is not in the dictionary, please e-mail me and I'll add it. Enchanted Learning® Over 20,000 Web Pages. Sample Pages for Prospective Subscribers
Loss of electrons from an atom or molecule as occurs when hydrogen is removed from a molecule or oxygen is added. The opposite of reduction.
A chemical process in which a molecule, atom, or ion loses electrons to an oxidant. The oxidized substance (which lost the electron) increases in positive valence. Whenever oxidation occurs, an offsetting reduction reaction must occur. (See reduction.)