Balloon Blow-up Experiment

We are really enjoying our science experiments.  Everyone is looking forward to completing their own experiment ready for the science fair.  Here is a video of a experiment we did using baking soda, vinegar, a bottle and a balloon.

We did this experiment three times.  We change the amount of vinegar we used the second time and the amount of baking soda the second time.  More baking soda produced a bigger balloon.
As the baking soda mixes with vinegar a chemical reaction takes place and creates carbon dioxide which blows up the balloon.