Aluminum is a versatile and abundant ELEMENT that has many uses. Siding is a type of material used to cover the exterior walls of a building, and aluminum siding is a popular choice due to its durability and low maintenance. Alcoa is a company that produces aluminum products, including siding. Aluminum is an ELEMENT on the periodic table with the symbol Al and atomic number 13. It is a silvery-white metal that is lightweight and malleable. Aluminum cans are widely used for packaging food and beverages. Aluminum FOIL is a thin sheet of aluminum that is used for cooking, wrapping food, and other purposes. Aluminum OXIDE is a compound of aluminum and oxygen that is used in abrasives and as a coating for some metals.