Here I show you how to make pure SiO2 powder using two relatively common chemicals. Sodium silicate can be found as water glass, which has many uses including auto repair and sealant. Sodium bisulfate is sometimes used as pH down for pools, be sure to check the label to make sure it contains bisulfate.

You could also get pure SiO2 by crushing up silica gel beads, but that might be difficult and the beads could have other additives that reduce purity.

I'll be using the SiO2 I produced in my upcoming thermite compilation video.