Have you ever before tried the baking soda and vinegar balloon experiment? This classic self-inflating balloon science experiment is really among my favorites. It is so simple to do and also it really is interesting to watch.

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The reaction between the baking soda and also vinegar reason the balloon come inflate all on its own! It is a show-stopper experiment for kids.

(See an ext of my STEM projects for kids.)


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

Supplies you Will require for the Experiment:


Plastic water bottle, emptied

1 Large Balloon

White Vinegar

Baking Soda 

Small Funnel


TIP: Before starting the experiment, girlfriend will want to stretch out the balloon to do it more loosened and easier to inflate.

Step 1- pour 1-2 spoonfuls the baking soda right into the opened of the balloon, making use of a funnel. You’ll need to shake it a bit to obtain it down into the basic of the balloon.

Step 2- use the funnel again and pour some vinegar into the plastic bottle until it is around an customs or two deep. Exact quantities do no matter.


Step 3- carefully stretch the opened of the balloon approximately the mouth the the bottle leaving it hanging down till you are all set for the reaction.

TIP: Don’t let any of the soda dump into the party while it is registered it.

Step 4- once you are prepared to see the chemistry reaction happen, lift increase the balloon permitting the baking soda to fall down right into the bottle.


This is when the funny starts! Baking soda and also vinegar produce an awesome chemical reaction. The gas from combine the two will reason the balloon to inflate. It’s impressive. The more gas there is created, the larger the balloon will get.

Your kids, if they are anything choose mine, will certainly beg to execute it again, climate 10 much more times! This is yes, really a perfect science job for kids to shot on their own.


If you perform repeat it, girlfriend will need fresh vinegar in the bottle. Once a reaction happens, it is not rather so strong the 2nd time through. The balloon walk not generally inflate again unless the vinegar is fresh.My youngsters were amazed and wanted to perform it again and again and again. Stock up top top baking soda and vinegar if you space planning this one! Luckily they room both fairly inexpensive.

(It’s a an excellent thing they space both therefore cheap!)

The science Behind It: Why does Baking Soda React v Vinegar?

When the vinegar and also baking soda incorporate there is a reaction between an acid and also a base. Vinegar is the acid and baking soda is the base. This reaction between the two causes a gas dubbed carbon dioxide come bubble and also foam. This gas having actually nowhere rather to go, broadens the balloon make the self-inflating balloon happen.

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Want more Baking Soda and also Vinegar Experiments?

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