Mixing baking soda and vinegar

Today we investigated mixing baking soda and vinegar together.

 

We used the investigation dog to help us with our thinking.

 

 First we put 1/4 cup of vinegar in the bottle and then put a teaspoon of baking soda in the balloon. After attaching the balloon to the bottle we tipped the baking soda into the water.

 

 

The vinegar and baking soda became fizzy and the balloon.

 

How can we make the balloon blow up even bigger?

 

We changed the experiment and added more vinegar. We observed the same result. We added more baking soda and still got the same result.