Blow Up A Balloon With A Lemon Cool Science Experiment
In this fun and easy cool science experiment for kids, we’re going to use a lemon to blow up a balloon.
- Empty water bottle
- Baking soda
- Add an ounce of water to the bottle.
- Now add a teaspoon of baking soda to the bottle. Swirl the bottle around to mix the water and baking soda thoroughly.
- Stretch out the balloon and have it ready to put over the mouth of the bottle.
- Cut the lemon in half and squeeze the juice into a glass.
- Pour the lemon juice into the bottle and quickly secure the balloon over the mouth of the bottle.
- The balloon should inflate.
How it Works:
This experiment uses an endothermic chemical reaction to inflate a balloon. These types of chemical reactions cool their immediate area and the bottle should feel cool to the touch. The lemon contains citric acid that when combined with baking soda which is a base causes an endothermic chemical reaction occurs. This chemical reaction releases carbon dioxide gas. The carbon dioxide will not be able to escape the bottle due to the balloon being stretched over the mouth of the bottle. The pressure will build and cause the balloon to inflate.
Make This A Science Project:
Try different sized bottles. Try different sized balloons. Try vinegar.