rialized areasthat have high levels of sulfur and nitrogen pollutants in the atmosphere. Thesecompounds combine with moisture in the air to produce extremely corrosiveacids.Metals may be protected from corrosion by coating them. A variety of coatingprocesses are used, including painting, electroplating with chromium, or platingwith zinc, which is called galvanizing. Alloying steel with chromium or chromiumand nickel produces stainless steel, which is resistant to rusting. Plastics,ceramics, and certain rubber compounds are also used to coat metals....