CaO (Calcium oxide)

Calcium oxide, commonly known as quicklime, is a white, powdery compound made from heating limestone. It has various uses, including in construction, where it helps create cement and mortar, and in agriculture, where it improves soil quality. When mixed with water, it forms calcium hydroxide, a process that generates heat. Additionally, calcium oxide plays a role in water treatment and is used in some industrial processes to produce chemicals. It's important to handle it carefully, as it can be caustic and can cause burns.