Halloween / Fizzing Pumpkin Eruption
Fizzing Pumpkin Eruption
Children add vinegar to bicarb soda inside a hollowed pumpkin and watch it foam up and spill over like a spooky volcano.
How to run it
- An adult cuts the top off and hollows out a small pumpkin beforehand.
- Have children spoon bicarb soda and a squirt of detergent into the pumpkin.
- Add food colouring to the vinegar.
- Pour the vinegar in and watch the eruption.
You will need
- small pumpkin
- bicarb soda
- vinegar
- dishwashing liquid
- food colouring
- tray
Make it easier or harderYounger children can pour and watch; older children can test different amounts and measure the foam.
SafetyAn adult does all carving with a sharp knife; keep vinegar away from eyes.
My Time Our Place · Outcome 4Children observe a chemical reaction and talk about what causes it.
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