Evening · Science

Build a baking-soda volcano in the backyard

Loud, foamy, faintly dangerous. Always works.

45 min ages 6–10· Outdoor· Screen-free

How to do it

Shape a mound of modeling clay around an empty water bottle so it looks like a volcano. Inside the bottle: two tablespoons baking soda and a few drops of food coloring. Outside, put it on a baking tray. Pour vinegar in, step back, narrate the eruption. Then ask: why did it fizz? (Acid + base = CO₂.) Run it twice — it works better the second time.

What you'll need

Baking soda
Amazon
White vinegar
Amazon
Food coloring
Amazon
Modeling clay
Amazon

Get everything ready

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