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Expanding Balloon

How to inflate a Balloon using Baking Powder and Vinegar


- a small plastic bottle

- baking powder

- vinegar

- balloon



First, put the baking powder into the empty bottle.


Then you have to put some vinegar inside the bottle.


Now stretch the opening of the balloon over the mouth of the plastic bottle.

You have to shake the bottle a little bit.


Wait now a few seconds and the balloon will get bigger and bigger!




The acetic acid reacts with the baking soda. Carbon dioxide is formed which expands and fills the balloon.

It is similar if you bake a cake: While the preparation of the dough and baking some small gas blister are produced trough chemical reactions. They make the cake loose.