We used our Science with Daddy Kit!
Put a scoop of baking soda in the first test tube(we stuck it in a tiny container of play dough to get it to stand up) then pour a little vinegar in to a balloon.
Without pouring the vinegar in, secure the balloon neck around the top of the tube. Once it is secure you can lift the balloon so that the solutions mix!
The reaction between the 2 creates gases that blow up the balloon!
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