We are growing vegetables without using chemical fertilizers.

Oxygen, which is one of the chemical elements, is necessary for us to breathe.

Understanding chemical equilibrium is very important in understanding chemical reactions.

The use of chemical weapons is prohibited by international law.

I am majoring in biochemistry at university.

My major is chemical engineering.

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.

I love organic chemistry classes.