This chemical reaction is very dangerous.

He neutralized the acid with a base.

In chemistry class, I learned about the neutralization reaction of acids and bases.

I like to study new languages.

This compound is a strong base.

I will teach mathematics to new students tomorrow.

I attended a math class today.

The sourness of this lemon is very strong.

He is majoring in chemistry at university.

This chemical reacts when heat is added.