Aluminium oxide is widely used as a refractory and abrasive material.

The use of chemical weapons is prohibited by international law.

Analytical chemistry is a science that reveals the composition and structure of substances.

I am majoring in physical chemistry at university.

I am majoring in inorganic chemistry at university.

My major is chemical engineering.

I am majoring in biochemistry at university.

This shirt is made of chemical fiber.

I love organic chemistry classes.

He is dedicated to the study of immunochemistry.