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oxide
oxide chemical compound containing oxygen and one other chemical element . Oxides are widely and abundantly distributed in nature. Water is the oxide of hydrogen. Silicon dioxide is the major component of sand and quartz. Carbon dioxide is given off during respiration by animals and plants. Carbon monoxide, sulfur dioxide, and oxides of nitrogen are among the waste gases of gasoline-burning internal-combustion engines. Nitrous oxide is an oxide of nitrogen often called laughing gas. Many of the metals form oxides. Some metal oxides, e.g., those of iron, aluminum, tin, and zinc, are important as ores. Litharge and red lead are lead oxides used as pigments in paint. A number of elements, e.g., arsenic, carbon, manganese, nitrogen, phosphorous, and sulfur, combine with oxygen to form more than one oxide. The inert gases do not form oxides. The halogens and inactive metals do not combine directly with oxygen, but their oxides can be formed by indirect methods. Oxides are usually named according to the number of oxygen atoms present in a molecule, e.g., monoxide (or simply oxide), dioxide, trioxide. In a molecule of carbon monoxide, CO, for example, there is one oxygen atom; in carbon dioxide, CO 2 , there are two; and in phosphorus pentoxide, P 2 O 5 , there are five. Oxides are commonly classified as acidic or basic oxides or anhydrides. Sulfur trioxide is an acid anhydride; it reacts with water to form sulfuric acid. Phosphorus pentoxide reacts vigorously with water to form phosphoric acid. Many metal oxides react with water to form alkaline hydroxides, e.g., calcium oxide (lime) reacts with water to form calcium hydroxide (slaked lime). Some metal oxides do not react with water but are basic in that they react with an acid to form a salt and water. Others exhibit amphoterism ; i.e., they react with both acids and bases. Still others are neutral and nonreactive. |
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Cite this article
"oxide." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "oxide." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-oxide.html "oxide." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-oxide.html |
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oxides
oxides A group of minerals in which oxygen is combined with one or more metals to give simple and multiple oxides respectively. Simple oxides include hematite (Fe2O3), rutile (TiO2), and zincite (ZnO). Multiple oxides include the spinels (MgAl2O4) and hydrated oxides, e.g. goethite (FeO.OH). Oxides are economically important and are the principal sources of tin (SnO2), iron (Fe2O3, Fe3O4), chromium (FeCr2O4), titanium (TiO2), manganese (MnO2), and aluminium (Al2O3.2H2O). Oxides are relatively high-temperature minerals occurring in association with a variety of igneous rocks. They may also form as chemical precipitates in oxidized environments.
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AILSA ALLABY and MICHAEL ALLABY. "oxides." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "oxides." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O13-oxides.html AILSA ALLABY and MICHAEL ALLABY. "oxides." A Dictionary of Earth Sciences. 1999. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-oxides.html |
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oxide
oxide Any inorganic chemical compound in which oxygen is combined with another element. Oxides are often formed by burning the element in air or oxygen. Oxides are used to produce acids and manufacture glass.
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"oxide." World Encyclopedia. 2005. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "oxide." World Encyclopedia. 2005. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O142-oxide.html "oxide." World Encyclopedia. 2005. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-oxide.html |
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oxide
ox·ide / ˈäkˌsīd/ • n. Chem. a binary compound of oxygen with another element or group. |
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Cite this article
"oxide." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "oxide." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-oxide.html "oxide." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-oxide.html |
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oxide
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Cite this article
T. F. HOAD. "oxide." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "oxide." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O27-oxide.html T. F. HOAD. "oxide." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-oxide.html |
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oxide
oxide •backside, trackside
•bedside • airside
•Tayside, wayside
•lakeside • stateside • graveside
•quayside, seaside, Teesside
•beachside • hillside • ringside
•suicide • herbicide • regicide
•fungicide • filicide • Barmecide
•homicide
•germicide, spermicide
•tyrannicide • parricide
•fratricide, matricide, patricide
•uxoricide • countryside • infanticide
•insecticide • pesticide • parasiticide
•mountainside • Merseyside
•Tyneside
•dioxide, dockside, hydroxide, monoxide, oxide, peroxide
•alongside
•diopside, topside
•broadside • downside • roadside
•poolside • upside • nearside
•fireside • Humberside • underside
•genocide • waterside • riverside
•silverside • overside
•kerbside (US curbside) • Burnside
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"oxide." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "oxide." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O233-oxide.html "oxide." Oxford Dictionary of Rhymes. 2007. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-oxide.html |
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