In this experiment, you can observe a chemical reaction.

Understanding chemical equilibrium is very important in understanding chemical reactions.

He is an excellent chemist who made many discoveries.

This reaction occurs through a chemical process.

He is an expert in petrochemistry.

Annam is the old name of Vietnam.

Ammonium carbonate is a compound commonly used in inorganic chemistry.

Ammonium nitrate is widely used in the manufacture of fertilizers and explosives.

In chemistry class, I learned about the properties of ammonium chloride.

There are a lot of cheap drinks at this bar.