Empty Capsules

The capsules are empty and white, but when you put them in water, they become a colorful, foamy mess. One of the most popular projects at The Cats Pajamas is our Experiment Pack. It comes with everything you need to make a fun and educational science experiment. When you put a capsule in a beaker of water, the capsule will create a colorful foam and the water will turn into a swirl of color. This is because when the capsule dissolves, the molecules in the capsule are split apart, and as they move away from each other, they take on the properties of the surrounding water.