Properties of metals, metalloids and nonmetals
The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties. All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.
Source: Wikipedia — Properties of metals, metalloids and nonmetals (CC BY-SA 4.0)