Metals are solid materials that are typically hard, shiny, and malleable, with good electrical and thermal conductivity. They are essential in various industries, including construction, manufacturing, and electronics. Common examples of metals include Iron, Aluminum, and Copper, each with unique properties that make them suitable for specific applications. The study of metals, known as Metallurgy, involves understanding their physical and chemical properties, as well as how they can be processed and used. Metals can be categorized into ferrous, which contain Iron, and non-ferrous, which do not. This classification helps in selecting the right metal for various engineering and construction projects.