Metallic Elements
A metal (from Greek "μέταλλον" – métallon, "mine, quarry, metal") is an element, compound, or alloy that is a good conductor of both electricity and heat. Metals are usually malleable, ductile and shiny. The meaning of the term "metal" differs for various communities (for example, astronomers call for convenience metals everything but hydrogen and helium, see Metallicity). Many elements and compounds that are not normally classified as metals become metallic under high pressures (see nonmetal#Metallic allotropes.)
Read more about Metallic Elements: Structure and Bonding, Alloys, Extraction, Recycling of Metals, Metallurgy, Applications, Trade, History
Famous quotes containing the words metallic and/or elements:
“The voice of America has no undertones or overtones in it. It repeats its optimistic catchwords in a tireless monologue that has the slightly metallic sound of a gramophone.”
—Vance Palmer (1885–1959)
“Three elements go to make up an idea. The first is its intrinsic quality as a feeling. The second is the energy with which it affects other ideas, an energy which is infinite in the here-and-nowness of immediate sensation, finite and relative in the recency of the past. The third element is the tendency of an idea to bring along other ideas with it.”
—Charles Sanders Peirce (1839–1914)