KEY TERMS

• • Ammonia

    Ammonia is a strong-smelling chemical compound made from the elements nitrogen and hydrogen. It has the chemical formula NH3. Along with water and methane, ammonia is one of the chief compounds that make up the ices found in the outer solar system. The bright, usually white, uppermost layer of clouds on Jupiter is thought to consist of ammonia ice. On earth, ammonia is a common ingredient in products like window cleaner and smelling salts.