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.

This substance undergoes a chemical change when heat is applied.

In this experiment, you can observe a chemical reaction.

The use of chemical weapons is prohibited by international law.

I am majoring in biochemistry at university.

I love organic chemistry classes.

I am majoring in inorganic chemistry at university.

My major is chemical engineering.