oxidise definition
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- Define oxidize. oxidize synonyms, oxidize pronunciation, oxidize translation, English dictionary definition of oxidize. v. ox·i·dized , ox·i·diz·ing , ox·i·diz·es v. tr. 1. To combine with oxygen; make into an oxide. 2. To increase the positive charge or valence of by...
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Oxidase test The reagent is a dark-blue to maroon color when oxidized, and colorless when reduced. Oxidase-positive bacteria possess cytochrome oxidase or indophenol oxidase (an iron-containing hemoprotein). These both catalyze the transport of electrons from donor compounds (NADH) to electron acceptors (usually oxygen).The test reagent, TMPD dihydrochloride acts as an artificial electron donor for the enzyme oxidase.The oxidized reagent forms the colored compound indophenol blue. The cytochrome system is usually only present in aerobic organisms that are capable of using oxygen as the terminal electron acceptor.hese both catalyze the transport of electrons from donor compounds (NADH) to electron acceptors (usually oxygen). The test reagent, TMPD dihydrochloride acts as an artificial electron donor for the enzyme oxidase.
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oxidation (ŏk'sĭ-dā'shən) The chemical combination of a substance with oxygen. A chemical reaction in which an atom or ion loses electrons, thus undergoing an increase in valence. Removing an electron from an iron atom having a valence of +2 changes the valence to +3. Compare reduction.
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Chemistry 240 Summer 2001 Instead, we will use the following definitions: 1  Oxidation means the addition of oxygen to a molecule or the removal of hydrogen from a molecule.  Reduction means the addition of hydrogen to a molecule or the removal of oxygen from a molecule.
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- 1 Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.  Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
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Redox The term redox comes from two concepts involved with electron transfer: reduction and oxidation. It can be explained in simple terms: 1  Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.2  Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.he oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state.
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Oxidizing agent In this context, the oxidizing agent is called an electron acceptor and the reducing agent is called an electron donor. A classic oxidising agent is the ferrocenium ion [Fe(C 5 H 5) 2 ] + , which accepts an electron to form Fe(C 5 H 5) 2. Tetracyanoquinodimethane is an organic electron-acceptor.he dangerous materials definition of an oxidizing agent is a substance that can cause or contribute to the combustion of other material. By this definition some materials that are classified as oxidising agents by analytical chemists are not classified as oxidising agents in a dangerous materials sense.
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Reduction and oxidation reactions Reduction and oxidation reactions. Reduction is the loss of oxygen from a molecule or the gaining of one or more electrons. A reduction reaction is seen from the point of view of the molecule being reduced, as when one molecule gets reduced another gets oxidised. The full reaction is known as a Redox reaction.
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Redox Or you could think it out like this: 1  An oxidising agent oxidises something else. 2  That means that the oxidising agent must be being reduced. 3  Reduction is gain of electrons (OIL RIG). 4  So an oxidising agent must gain electrons.
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CHEMICAL REACTION oxidation-reduction, oxidoreduction, redox - a reversible chemical reaction in which one reaction is an oxidation and the reverse is a reduction photochemical reaction - a chemical reaction produced by the action of light
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Microbiolog - Chapter 6 - Metabolism: Fueling Cell Growth Oxidation-reduction reactions or redox. 1) Reactions in which one or more electrons is transferred from one substance to another. 1.1) Compounds that LOSE electrons are oxidized, Termed electron donor 1.2) Compounds that GAIN electrons are reduced, Termed electron carrier. 2) In reactions, electrons are removed.
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- Sulfate-reducing bacteria are those bacteria and archaea that can obtain energy by oxidizing organic compounds or molecular hydrogen (H2) while reducing sulfate (SO2− 4) to hydrogen sulfide (H2S). In a sense, these organisms breathe sulfate rather than oxygen in a form of anaerobic respiration.
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AP Biology Respiration oxidation-reduction A chemical reaction in which an atom or ion loses electrons to another atom or ion.
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- Lindsey Goodwin. Definition: Pu-erh (also commonly spelled puer and pu'er) is a rare form of tea with a deep, rich flavor. It is oxidized (like black tea), but also put through a secondary process of fermentation (like wine or cheese).The process may take time (as with aged pu-erh) or may be expedited (as with ripened pu-erh).indsey Goodwin. Definition: Pu-erh (also commonly spelled puer and pu'er) is a rare form of tea with a deep, rich flavor. It is oxidized (like black tea), but also put through a secondary process of fermentation (like wine or cheese).
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Reduction Definition in Chemistry In some reactions, oxidation and reduction may be viewed in terms of oxygen transfer. Here, oxidation is gain of oxygen, while reduction is loss of oxygen. An old, less-common definition of oxidation and reduction examines the reaction in terms of protons or hydrogen. Here, oxidation is loss of hydrogen, while reduction is the gain of hydrogen. The most accurate reduction definition involves electrons and oxidation number.
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- 1 Reduction also means a gain in electrons. . 2  Negatively charged ions move to the positive electrode during electrolysis. 3  They lose electrons and are oxidised oxidation: Oxidation is a reaction in which oxygen combines with a substance.4  Oxidation also means a loss of electrons. Reduction also means a gain in electrons. . 2  Negatively charged ions move to the positive electrode during electrolysis. 3  They lose electrons and are oxidised oxidation: Oxidation is a reaction in which oxygen combines with a substance.
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- Oxidation is a process where a substance. 1  Loses one or more electrons. 2  Gains an oxygen atom or atoms. 3  Loses a hydrogen atom or atoms. 4  Gains an increase in its oxidation number.
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Oxidation State Definition Post. Share. Oxidation State Definition: The oxidation state is the difference between the number of electrons associated with an atom in a compound as compared with the number of electrons in an atom of the element. In ions, the oxidation state is the ionic charge.
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Oxygenase An oxygenase is any enzyme that oxidizes a substrate by transferring the oxygen from molecular oxygen O 2 (as in air) to it.The oxygenases form a class of oxidoreductases; their EC number is EC 1.13 or EC 1.14.Oxygenases were discovered in 1955 simultaneously by two groups, Osamu Hayaishi from Japan and Howard S. Mason from the US.here are two types of oxygenases: 1  Monooxygenases, or mixed function oxidase, transfer one oxygen atom to the substrate, and reduce the other oxygen atom to water. 2  Dioxygenases, or oxygen transferases, incorporate both atoms of molecular oxygen (O 2) into the product(s) of the reaction.
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Definitions of Oxidation and Reduction This page looks at the various definitions of oxidation and reduction (redox) in terms of the transfer of oxygen, hydrogen and electrons. It also explains the terms oxidising agent and reducing agent. Oxidation and reduction in terms of oxygen transfer. Definitions. Oxidation is gain of oxygen. Reduction is loss of oxygen.
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Electrons and Energy When electrons are removed from a compound, the compound is considered oxidized; a compound that oxidizes another is called an oxidizing agent. The transfer of energy in the form of electrons allows the cell to transfer and use energy in an incremental fashion.
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Aerobic Bacterial Metabolism: Definition & Process Aerobic respiration is the process in which a compound is oxidized using oxygen as the terminal electron acceptor. That definition probably doesn't make much sense yet, but by the end of the lesson it will come together.umans consume food for energy and use oxygen for respiration in a process referred to as metabolism. Believe it or not, bacterial cells carry out almost exactly the same processes. Understanding bacterial metabolism can be difficult.
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- A substance that oxidizes another substance Any chemical substance that has a tendency to accept electrons and thereby undergoing reduction themselves is known as an oxidisi…ng agent. An oxidizer is a compound that supplies its own oxygen and heat when in contact with organic compounds. These chemicals that can react vigorously and explode. Oxidizers are compounds which are capable of reacting with and oxidizing (i.e., giving off oxygen) other materials. A well known example of oxidation is the process we know as corrosion, where the metal reacts with air to form the metal oxides referred to as rust.
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Oxidizing agent In chemistry, an oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances (cause them to lose electrons). Common oxidizing agents are oxygen, hydrogen peroxide and halogens.
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Antioxidant Organisms obtain energy by transferring electrons from an electron donor to an electron acceptor. In the electron transport chain, the electron acceptor is reduced and the electron donor is oxidized. In cellular respiration under aerobic conditions oxygen is the terminal electron acceptor. See also: electron acceptor, redox reaction.
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Oxidation Definition and Example in Chemistry Oxidation is losing of electrons during a reaction by a molecule, atom or ion. Oxidation occurs when the oxidation state of a molecule, atom or ion is increased. The opposite process is called reduction, which occurs when there is a gain of electrons or the oxidation state of an atom, molecule, or ion decreases.