Some well-known metals are aluminium, copper, gold, iron, silver, titanium, and zinc.
A material that contains atoms of more than one metal is termed an alloy. Examples of alloys are steel (iron and carbon), brass (copper and zinc) and duralumin (aluminium and copper).
In chemical terms, a line drawn on the periodic table through the elements B, Si, As, Te, and At roughly separates the metals from the nonmetals. Those elements on the same side of the line as He are nonmetals, while those on the opposite side are metals. Those elements on, or in some cases adjacent to, the line are metalloid?s or semi-metals. Many of these metalloids, when appropriately doped, form semiconductor materials.
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.
Although the vast majority of elements are metals, nonmetals are highly abundant.