It’s time for another balloon science experiment! Last time we made a balloon fly across the room like a rocket and this time we are going to blow up a balloon without using our mouths.
This is a great experiment for young children because the set-up is simple and it only takes a few minutes to get to the exciting finale. Enjoy!
Watch The Balloon Blow-up Science Experiment Video
Supplies Needed for the Balloon Blow-Up Science Experiment
- Small Soda Bottle
- Baking Soda
Balloon Blow-up Science Experiment Instructions
Step 1 – Using a funnel, pour about a third of a cup of vinegar into the bottle.
Tip: I used Apple Cider Vinegar, but any kind of vinegar will work.
Step 2 – Then insert another funnel into the mouth of the balloon.
Tip: It is best to have two funnels, one for filling the bottle with vinegar and one for the balloon. If you only have one funnel, it is important that you completely wash and dry the funnel after you add the vinegar and before you put it into the balloon.
Step 3 – Place two teaspoons of baking soda into the funnel so it falls into the balloon. Then remove the balloon from the funnel.
Step 4 – Next, secure the the mouth of the balloon over the top of the bottle.
Tip: Don’t let any of the baking soda drop into the bottle…yet!
Step 5 – While holding the bottle, lift the end of the balloon allowing the baking soda to drop into the bottle
Step 6 – Watch in amazement as the balloon magically inflates
How Does the Balloon Blow-up Science Experiment Work
When baking soda and vinegar are mixed together, it creates a gas called carbon dioxide. The gas begins to expand in the bottle and starts to inflate the balloon. The more gas that is created, the larger the balloon will inflate.
I hope you enjoyed the experiment. Here’s some printable instructions!