The Little Learning Warriors at Arlington Elementary took part in a STEM lesson, observing the chemical reaction between baking soda and vinegar by using the reaction to blow up a balloon.

The students were lead in a discussion about what form of matter they have seen used to fill balloons — gases and water. They were informed that, this time, these balloons would be inflated using baking soda and vinegar.
The Little Learning Warriors learned that a chemical reaction happens when the baking soda and vinegar are combined, creating a new substance — a gas — which inflates the balloons.

The students put vinegar and food coloring into an empty water bottle and used a funnel to put a little baking soda into a balloon. The mouth of the balloon was then secured to the top of the water bottle, and lifted to drop the baking soda into the bottle to combine with the vinegar. They observed as the gas caused by the chemical reaction inflated their balloons, and discussed what chemical reactions happen every day all around them and other reactions they observe in their individual lives.