Fizzy Pumpkins

We couldn’t resist making some mini fizzy pumpkins this week. These are so easy and such a lot of fun. Baking soda and vinegar reactions never get boring!

Baking Soda is alkaline and reacts with acids ( in this case vinegar ) releasing carbon dioxide ( a gas ) and water. It’s the bubbles of carbon dioxide that produce the fizz. For a thicker foam you can add a small amount of washing up liquid ( dish soap )

What you need to make a fizzy pumpkin

Mini pumpkins – or go large!

Baking soda

Vinegar

Food colouring

How to make a fizzy pumpkin

Spoon out the centre of your mini pumpkins and add  a good amount of baking soda and food colouring. Add the vinegar when you’re ready and give it a good stir.

Keep adding vinegar and baking soda to keep the reaction going.

Extra Challenge

Can you make a thicker foam? Try adding dish soap ( washing up liquid )

If you enjoyed this activity we’ve got lots more easy Halloween Science Experiments for you to try.

Last Updated on September 28, 2021 by Emma Vanstone