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Color Burst Foam Eruption Science Experiment

An engaging and colorful science experiment that combines baking soda and vinegar to create a mesmerizing foam eruption, perfect for a fun afternoon activity.
Print Recipe
Prep Time 10 minutes
Total Time 10 minutes
Servings: 1 tray of foam eruption
Course: Mixing and Observation
Cuisine: Mixing and Observation
Ingredients Method Notes

Ingredients
  

  • 1 cup baking soda
  • 2-3 tablespoons liquid dish soap
  • Food coloring or liquid watercolors
  • White vinegar
  • Small cups or shot glass-sized wells
  • A shallow tray or baking sheet
  • A mixing bowl
  • A sturdy spoon or spatula
  • Optional: pipettes or droppers
  • Optional: measuring spoons
  • Optional: safety goggles and gloves

Method
 

  1. Place your tray and mixing bowl on a flat surface.
  2. Spoon 1 cup of baking soda into the bowl.
  3. Add 2 to 3 tablespoons of liquid soap to the baking soda.
  4. Stir slowly until the mixture becomes thick and slightly glossy.
  5. Add a small splash of water, one tablespoon at a time.
  6. Spread the paste into the tray in a low, even layer.
  7. In small cups, mix a few drops of food coloring with a little vinegar.
  8. Arrange the color cups around the tray for easy reach.
  9. With your spoon, make shallow wells in the paste.
  10. Pour the colored vinegar into a well slowly.
  11. Repeat with other colors, spacing the pours so each eruption has room.
  12. When the foam settles, you can gently press it with a spoon to explore texture.

Notes

This experiment may leave colors temporarily staining skin, but they wash off easily. Ensure supervision for younger children and use safety gear if desired.