Aluminum is the third most abundant element on Earth, making up about 8% of the Earth's solid surface. It is a light, silver-colored metal that is extracted through electrolysis due to its reactivity. The most common processes for production of aluminum are the Bayer process and Hall-Héroult process. Aluminum has a variety of applications due to its light weight, resistance to corrosion, and conductivity including use in aircraft parts, cooking equipment, wires, and cans.