Make a Bouncy Ball: A Simple Chemistry Activity for Kids

Making a bouncy ball is a fun hands-on activity that introduces children to simple chemistry. The image shows a classroom-style guide using common craft materials and a few mixing steps.

This project works best as a supervised STEM activity where kids can observe texture changes, measure ingredients, and test how small adjustments affect the final bounce.

Materials

• Borax
• Cornstarch
• Craft glue
• Warm water
• Measuring spoons
• Craft stick
• Two small bowls
• Optional food coloring or glitter

Basic Steps

1. In one bowl, mix warm water with a small amount of borax until it dissolves.
2. In another bowl, add craft glue and cornstarch.
3. Slowly add some of the borax mixture to the glue mixture.
4. Stir until the mixture begins to thicken.
5. Remove it from the bowl and shape it with your hands.
6. Let the ball rest briefly, then test the bounce.

What Kids Can Learn

This activity shows how materials can change when ingredients combine. Kids can observe stickiness, stretchiness, firmness, and elasticity.

Experiment Ideas

• Try different amounts of cornstarch.
• Compare bounce height on different surfaces.
• Add color and observe whether it changes the texture.
• Make two balls and compare which one bounces better.

Safety Tips

Adult supervision is important. Borax should not be eaten or used near the eyes. Wash hands after the activity, keep materials away from small children and pets, and do not use the ball as a toy for children who may put it in their mouth.

Final Thoughts

A homemade bouncy ball activity is simple, playful, and educational. With careful supervision and a few basic supplies, kids can enjoy a memorable science experiment that feels like play.