Metal

Metal is a class of materials characterized by their shiny appearance, malleability, and ability to conduct heat and electricity. They are typically solid at room temperature (except mercury), with tightly packed atoms that allow electrons to move freely, enabling electrical conductivity. Metals are used in construction, manufacturing, and technology because of their strength, durability, and versatility. Examples include iron, aluminum, copper, and gold. Their properties make them essential in creating tools, machinery, electrical wiring, and jewelry, and they often can be recycled repeatedly without losing quality.