This is one of the best summer science experiment ideas we’ve heard: erupting ice chalk! A colorful, scientific activity perfect for taking outside during these hot summer months. And it’s pretty darn simple too! Check it out:
What you need:
- Baking soda
- Liquid watercolor paint or food coloring
- Ice cube trays
- Squeeze bottles
What to do:
- Mix 1/4 cup baking soda, 1/4 cornstarch, and 1/2 cup water. Stir well. Pour into the ice cube trays, mixing whatever colors of paint or food coloring into the individual sections. Stick the trays in the freezer until the mixture has solidified.
- Pop out your ice chalk and invite your children to paint on a sidewalk or driveway. Fill your squeeze bottles with vinegar.
- Once the chalk has begun to melt together and your kids are done painting, have them go at it with the squeeze bottles! You might even want to hold back some of the chalk at the beginning so they can watch the effect of the vinegar on full cubes.