Bath bombs may seem fancy, but they actually employ very concise, kid-friendly science. Try out the Klutz: Make Your Own Bath Bombs kit – a perfect activity to fill an afternoon.
As the Klutz instruction book in the kit explains, bath bombs fizz because of a chemical reaction between baking soda (or “sodium bicarbonate”) and citric acid. When dropped in water, the two chemicals mix and create a reaction that generates carbon dioxide in the form of lots of tiny fizz.
The Klutz: Make Your Own Bath Bombs kit includes everything you need to create 12 different colorful bath bombs. It also has a detailed instruction book with pictures of every step in the creation process.