Description :

The Pufferfish team made balloons that inflate on their own!
After programming the Robotic Mouse(!) to show the materials they would need, they carried out the experiment. They put baking soda in one balloon and filled another with vinegar. After placing the balloon with the baking soda inside the balloon with the vinegar, they tied them tightly and marked dots on them. Then they stepped on the balloons with their feet. As the balloon with the baking soda popped, the outer balloon expanded, since the baking soda and vinegar reacted with each other. The dots they had drawn helped make the balloon’s expansion visible. 

Well done to the Pufferfish team for your creativity!