We used:
A bottle
A balloon
Baking soda
A funnel
White vinegar
We poured some white vinegar into the bottle.
Next we put some baking soda into the balloon using a funnel.
We carefully stretched the balloon over the neck of the bottle.
Then we stood the balloon up so that the baking soda dropped into the vinegar below!
This caused carbon dioxide to form and the balloon inflated!
The children thought this was 'Amazing!'
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