How is Silicon Dioxide (CAS: 91053-39-3) typically synthesized?

Silicon Dioxide is typically synthesized by heating silicon with oxygen, or by oxidizing silicon metal. Common methods include the direct oxidation of silicon in air or using water glass (sodium silicate) as a precursor. The process can also involve the hydrolysis of silicon tetrachloride, producing silica gel which can be dehydrated to form the solid form.