The main component of glass is silica (silicon dioxide, SiO2). Silica is the primary ingredient used to create glass, and it can be found in sand, quartz, and other natural materials. To produce glass, silica is heated to high temperatures until it melts and forms a liquid. Various additives, such as soda (sodium carbonate) and lime (calcium oxide), are often incorporated to modify glass properties, such as its melting point and durability. The combination of these elements results in a wide range of glass types used in windows, containers, and various other applications.