Do Try This At Home: Inflate a balloon with water

Week 4
Week 4's Do Try This At Home science experiment with DHDC
Published: Sep. 13, 2021 at 12:07 PM CDT
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AMARILLO, Texas (KFDA) - In this week’s Do Try This At Home with the Don Harrington Discovery Center, we will explain and show why hot air expands and cool air condenses using a balloon!

Inflate a balloon with water: Presented by Trinity Thorton, DHDC’s Virtual Learning Coordinator


- plastic water or pop bottle

- balloon

- ice water

- hot water

- 2 containers to hold the water (large enough to place the bottle in)


- Stretch out the balloon by blowing it up some and pulling on it.

- Spread the mouth of the balloon over the mouth of the bottle.

- Take the bottle with the balloon on top and place it into the hot water (still standing up). The balloon should begin to fill up.

- Then, take the bottle with the balloon on top and place it into the cold water, like you did with the hot water. The balloon should then deflate.


- The air that is present when the balloon inflates is always there! When air is warmed it expands. When it is cooled, it condenses.

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