This chemical reaction is very dangerous.

This chemical reaction is very dangerous.

This chemical reacts when heat is added.

Understanding the transition state of a chemical reaction is important for predicting the progress of the reaction.

His body showed a rejection reaction to the transplanted organ.

She overreacted to his words.

His single word triggered a chain reaction, and everything changed.

Nuclear reactions are used for mass production of energy.

I was surprised by his overreaction.

It's difficult to understand his explanation.