Your breath blows away some of the hot air around the flame. If the liquid wax cools down enough, it can’t become a gas. Without wax gas, the flame won’t burn. Your breath blows some of the wax gas ...

The reaction can only use the oxygen that is already in the jar. So, when that oxygen is used up, the reaction can’t keep going. Running out of oxygen makes the flame go out. 1. Ask the adult you are ...