Funtastik Labs
Katy
615 S Mason Rd
Katy, TX 77450
Katy, TX 77450
A classic science reaction
Build the volcano. Trigger the eruption.
Shape the mountain, combine the ingredients, and watch carbon dioxide turn a familiar reaction into a foaming finale.
Gather the ingredients.
Use a washable work surface or tray. An adult should handle the setup and supervise the full experiment.
- Small plastic bottle
- Baking soda
- White vinegar
- Dish soap
- Warm water
- Food coloring
- Clay or play dough
- Tray and safety goggles
Build, mix, and erupt.
Keep the bottle opening clear while shaping the volcano around it.
Shape the volcano
Set the bottle on the tray and build a clay or play-dough cone around it.
Prepare the color
Fill the bottle partway with warm water, then add a few drops of food coloring.
Build the foam
Add a small squeeze of dish soap and about two tablespoons of baking soda.
Make it erupt
Pour in vinegar, step back, and watch the foam rise out of the opening.
What makes the foam rise?
Vinegar is an acid and baking soda is a base. When they combine, the reaction creates carbon dioxide gas. The dish soap catches that gas in bubbles, producing a larger stream of foam.
Change one variable
- Test a little more or less baking soda.
- Layer two food colors for a different look.
- Add texture to the outside of the volcano.
- Compare how high different mixtures rise.
Ready to play scientist with more equipment?
The Science Lab includes three guided experiments and two results to take home.