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.

I like to study new languages.

I will teach mathematics to new students tomorrow.

I attended a math class today.

This is an organic vegetable.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.