Basic oxides are compounds formed when metals react with oxygen. They typically consist of metal cations and oxide anions, and they can react with acids to produce salts and water. Common examples include sodium oxide and calcium oxide. These oxides often have a high melting point and are usually solid at room temperature. In addition to their acid-neutralizing properties, basic oxides can also react with water to form hydroxides, which are important in various industrial processes. They play a crucial role in the production of materials like cement and glass, contributing to many construction and manufacturing applications.