This chemical reacts when heat is added.

This chemical reaction is very dangerous.

She overreacted to his words.

Nuclear reactions are used for mass production of energy.

This chemical reaction is very dangerous.

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

I was surprised by his overreaction.

His body showed a rejection reaction to the transplanted organ.

This compound will saponify when heat is applied.

Saponification is the process of making soap by reacting fatty acids with alkali.