Salts are chemical compounds formed when an acid reacts with a base. They consist of positive ions, called cations, and negative ions, called anions. Common table salt, or sodium chloride, is a well-known example, made from the reaction of sodium hydroxide and hydrochloric acid. Salts are often used in cooking, preserving food, and even in various industrial processes. In addition to table salt, there are many other types of salts, such as potassium chloride and calcium carbonate. These compounds can be found in nature, like in seawater or mineral deposits. Salts play essential roles in our bodies, helping with nerve function and maintaining fluid balance.