Metal definition, any of a class of elementary substances, as gold, silver, or copper, all of which are crystalline when solid and many of which are characterized by opacity, ductility, conductivity, and a unique luster when freshly fractured. In Jupiter's interior, however, under enormous pressure, hydrogen becomes a … ... because an element's properties can change under different conditions. In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. What is a Metal? Hydrogen, for example, is a non-metal under normal conditions on Earth.

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Define metallic element. The definition of metal: A substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions ().Metals are otherwise defined according to their position on the Periodic Table. ... try using the Norman Dining Table to fit infinite guests around this vintage galvanised metal top, … Definition of Metals.