In chemistry and physics, a metal is a solid chemical element or alloy that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity. Metals readily lose electrons to form positive ions and are characterized by a crystal lattice structure bonded by a sea of mobile valence electrons. In cultural and musical contexts, "metal" refers to heavy metal, a high-energy genre of rock music defined by distorted electric guitars and aggressive rhythms.
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