I am majoring in inorganic chemistry at university.

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

I am majoring in physical chemistry at university.

He is dedicated to the study of immunochemistry.

Thermochemistry is a part of chemistry that deals with the reactions of heat and matter.

Chemical pollution has a serious impact on the health of the Earth.

This shirt is made of chemical fiber.

I found an old box in the storeroom.

He is suffering from combat stress reaction.

She felt the pathos of things when she saw the cherry blossoms falling.