The chemical formula for sand is Si02. This is in consideration that sand is made up of silicon dioxide or simply silica. Silica is widely used because of its hardness and also makes up quartz. Silica is also used in the manufacture of glass.
1 Additional Answer
Soft sandy beaches, fun in the sun, swimming, and the aroma of sunscreen are all things that come to mind when someone mentions the word sand. Sand, otherwise known as silicon dioxide has a chemical formula of SiO2.