Calcium oxide
Calcium oxide is a chemical compound of calcium and oxygen. Its chemical formula is CaO. It is known as quicklime. It is made in a lime kiln. It releases heat when dissolved in water and changes into calcium hydroxide. It is a white powder.
It is also a base. It reacts with acids to make calcium salts. Quicklime is an important ingredient of cement.
Related pages
Calcium
Oxygen
Calcium hydroxide
References
Calcium compounds
Oxides