Description
Amaze kids by holding a flame to a water-filled balloon without popping it, revealing heat transfer and water’s cooling properties for a striking aha-effect.
Details
1. Fill a balloon with 1/2 cup of water and then inflate it with air.
2. Tie the balloon securely.
3. Light a candle (under adult supervision) and place it on a stable surface.
4. Slowly lower the balloon over the flame, keeping the water-filled part above the flame.
5. Observe that the balloon doesn’t pop due to water absorbing heat.
6. Discuss why the water prevents the balloon from burning.
Materials
Balloon, water, candle, matches