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Metalmetal: any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. also see: Whites metal detectors
A metal is an element that readily forms cations and bonds ionically. The metals are one of the three groups of elements as distinguished by their ionization and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals. Elements on this line are metalloids, sometimes called semi-metals; elements to the lower left are metals; elements to the upper right are nonmetals. Metals have certain characteristic physical properties: they are usually shiny, have a high density, are ductile and malleable, usually have a high melting point, are usually hard, and conduct electricity and heat well. These properties are mainly because each atom exerts only a loose hold on its outermost electrons (valence electrons); thus, the valence electrons form a sort of sea around the atoms. Most metals are chemically stable, with the notable exception of the alkali metals and alkaline earth metals, found in the leftmost two groups of the periodic table. Nonmetals are more abundant in nature than are metals, but metals in fact constitute most of the periodic table. Some well-known metals are aluminium, copper, gold, iron, lead, silver, titanium, uranium, and zinc. The oxides of metals are basic; those of nonmetals are acidic. The allotropes of metals tend to be lustrous, ductile, malleable, and good conductors, while nonmetals generally speaking are brittle (for solid nonmetals), lack luster, and are insulators. An alloy is a mixture with metallic properties that contains at least one metal element. Examples of alloys are steel (iron and carbon), brass (copper and zinc), bronze (copper and tin), and duralumin (aluminium and copper). Alloys specially designed for highly demanding applications, such as jet engines, may contain more than ten elements. White metal is any of several light or silver-white colored alloys used as a base for plated silverware, ornaments or novelties, as well as any of several lead-base or tin-base alloys used for things like bearings, fusible plugs and metal type. Metal detectorsMetal detectors utilize the physical properties of metals to detect metal objects lying a foot or so beneath the surface of the ground. With a metal detector you can go prospecting or treasure hunting. for more information see Whites Metal Detectors Note: This article is about the use of the word metal to mean elements in various senses. Metal or Heavy Metal is also a genre of music. White Metal is Christian oriented Metal, also referred to as Christian Metal
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Metal" and from http://www.white-on.com
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