bouncy ball

Who can make the bounciest ball in your house?

Who can make the bounciest ball in your house?

How high can your homemade bouncy ball go? Let’s put our next STEM experiment to the test — putting chemistry and physics at play. So throw on your lab gear, and get ready for some high-flying, ultra-bouncy STEM fun!

We’re going to create these bouncy balls using just a few simple ingredients. Unlocking the power of petroleum, we’re able to manipulate the recipe we used to make gooey slime (which was mega fun in case you missed it) for another awesome experiment! This time, the addition of corn starch changes the composition of the mixture, so we don’t get the gooey texture of slime. The starch results in a more solidified version that can be molded into a ball — and bounced! Fuel your passion for STEM, and see how high your ball will bounce.

Bouncy Ball

What You’ll Need:

  • 1 tbsp. white school glue
  • Food coloring
  • ½ tsp. borax
  • 3 tbsp. corn starch
  • 4 tbsp. warm water


  • In a small cup, mix together the corn starch, borax and warm water.
  • In separate cup, mix together the glue and the food coloring of your choice.
  • Pour the mixture of water, borax and corn starch into the cup of glue and food coloring. It will immediately start clumping up. Don’t panic. Take a breath and continue to stir until a slimy glob forms in the middle. That extra liquid pooling around the glob? Yeah, that’s normal.
  • Use your hands to grab the glob out of the liquid, and start to roll it into a ball between your palms. As needed, roll the ball on a paper towel to soak up some of the moisture and continue rolling.
  • Once the stickiness is gone, give it a go and see how high you can bounce it!


  • If the ball isn’t bouncing right away, let it sit for a few minutes on a flat surface. Then take the glob and reshape it. This allows for “ultra-bounciness” to be achieved.