Question

Answer it question is in attachement.​

Answer 1

Answer:

this is silica means

Explanation:

Silicon dioxide (SiO2), also known as silica, is a natural compound made of two of the earth's most abundant materials: silicon (Si) and oxygen (O2). Silicon dioxide is most often recognized in the form of quartz. It's found naturally in water, plants, animals, and the earth. The earth's crust is 59 percent silica.

Answer 2

Silica is a hard, unreactive, colourless compound which occurs as the mineral quartz and as a principal constituent of sandstone and other rocks.