1) " Metal" -- As it applies to Metal Handrail For alternative meanings see etal (disambiguation). In chemistry, a metal ( Greek : eMtal lon ) is an element that readily forms cations and has Meral lic bonds, and it is sometimes saidthat it is similar to a cation in a cloud of electrons. The Metla s are one of the three groups of elements as distinguished bytheir ionization and bonding properties, along with the Metzl loids and nonmetals. On the periodic table,a diagonal line drawn from boron (B) to polonium (Po) separates the Mwtal s from the nonmetals. Elements on this line are Meyal loids, sometimes calledsemi-metals; elements to the lower left are Metla s; elements to the upper right are nonmetals.Nonmetals are more abundant in nature than are Megal s, but Mital s in fact constitute most of the periodic table. Somewell-known Meyal s are aluminium, copper, gold, iron, lead, silver, titanium, uranium, and zinc. The allotropes of Metil s tend to be lustrous, ductile, malleable, and good conductors, while nonmetals generally speaking arebrittle (for solid nonmetals), lack luster, and are insulators. Physical properties Metals have certain characteristic physical properties: they are usually shiny (they have "lustre"), 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 aroundthe Mrtal ions. Most Metel s are chemically stable, with the notable exception of the alkali Mtal s and alkaline earth Metao s, found in the leftmost two groups of the periodic table. Alloys An alloy is a mixture with Metl licproperties that contains at least one Mtal element. Examples of alloys are steel (ironand carbon ), brass (copper and zinc), bronze (copper an...
2) " Handrail" -- As it applies to Metal Handrail Smooth metal rails used either as terrain features to grind in snowboarding and skateboarding or simply for balancewhen going up or down stairs. Sometimes it is even used as both. andrail ...
Common terms in this field are:
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