Have you ever before tried the baking soda and vinegar balloon experiment? This timeless self-inflating balloon scientific research experiment is really one of my favorites. It is so easy to carry out and it really is amazing to watch.

You are watching: Self-inflating balloons

The reactivity between the baking soda and vinegar cause the balloon to inflate all on its own! It is a show-stopper experiment for children.

(See more of my STEM projects for kids.)

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How to Do the Baking Soda and also Vinegar Balloon Experiment:


Supplies You Will Need for the Experiment:

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Plastic water bottle, emptied

1 Large Balloon

White Vinegar

Baking Soda 

Small Funnel

Spoon

TIP: Before founding the experiment, you will desire to stretch out the balloon to make it more loose and also easier to inflate.

Step 1- Pour 1-2 spoonfuls of baking soda into the opening of the balloon, utilizing a funnel. You’ll need to shake it a little bit to acquire it dvery own right into the base of the balloon.

Tip 2- Use the funnel aacquire and pour some vinegar into the plastic bottle until it is around an inch or 2 deep. Exact quantities perform not issue.

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Step 3- Caretotally stretch the opening of the balloon around the mouth of the bottle leaving it hanging dvery own until you are all set for the reactivity.

TIP: Don’t let any type of of the soda dump into the bottle while attaching it.

Step 4- When you are prepared to see the chemical reaction happen, lift up the balloon enabling the baking soda to fall dvery own right into the bottle.

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This is when the fun starts! Baking soda and vinegar develop an awesome chemical reactivity. The gas from combining the 2 will cause the balloon to inflate. It’s impressive. The even more gas tright here is developed, the larger the balloon will certainly obtain.

Your kids, if they are anything favor mine, will certainly beg to execute it aacquire, then 10 even more times! This is really a perfect scientific research task for children to try on their own.


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If you perform repeat it, you will need fresh vinegar in the bottle. Once a reactivity happens, it is not fairly so strong the second time with. The balloon does not generally inflate aacquire unmuch less the vinegar is fresh.My youngsters were amazed and wanted to carry out it again and also aacquire and also again. Stock up on baking soda and vinegar if you are planning this one! Luckily they are both fairly inexpensive.

(It’s a good thing they are both so cheap!)

The Science Behind It: Why Does Baking Soda React With Vinegar?

When the vinegar and baking soda incorporate tright here is a reactivity between an acid and a base. Vinegar is the acid and also baking soda is the base. This reaction in between the 2 reasons a gas dubbed carbon dioxide to bubble and also foam. This gas having actually nowhere else to go, increases the balloon making the self-inflating balloon take place.

See more: What Is The Creation Of A Waxy Substance When There Is Hydrogenation Of The Fat In The Body?

Want More Baking Soda and Vinegar Experiments?

We love the carbon dioxide reactions that these two substances produce.