Breath Saver
What You Did
You blew up a balloon without having to blow into it.
Intended Results
The balloon should have expanded, though it didn’t completely fill with air.
Unintended Results
If the water isn’t hot enough, the balloon will not expanded. If the bottle doesn’t submerge, the balloon will not expand
Keep Tinkering
Try using different sized bottles
Explored Concepts
air pressure, standard heat and pressure