
Paul set the challenge to the students to create fireproof ballons. He asked one of the students to test a standard balloon over a candle to see how long it would last, lets see what happened:
Later on in the lesson Paul tests out his amazing fireproof balloon with the students, I wonder how did he do that?
Finally Christophe asked what would happen if we put a balloon over a kettle of boiling water? There was only one way to find out.