Little kids love balloons and they love hands on activities so we try and come up with hands on science activities that they can do on their own. So one of the activities was filling the balloon with air using baking soda and vinger. I tested it out with my kids first to make sure it would work as planned. We placed a reasonable amount of vinger in the bottle first. Then we took a funnel. Wrapped the balloon around the smaller part of the funnel and filled it with baking soda. Then we attached the balloon to the opening of the bottle and dumped all of the baking soda in the vinger. From there the balloon would fill with air causing it to blow the balloon up.
Love
Candace