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Bubbling brew is a playful, fizzing science activity preschoolers will love. They can pretend to be witches or wizards whilst they stir up a magic, fizzing brew filled with plastic bugs!

We originally did this one afternoon with my youngest when she was a preschooler (how time flies!). It kept her busy for AGES and it was something she kept requesting to do again and again for years afterwards – who doesn’t love fizzy science?

It’s very messy, but oh-so-fun.

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bubbling brew fizzing science activity for kids

bubbling brew fizzing science activity for kids

Bubbling brew is super easy to set up at home, likely with ingredients and props you already have on hand.

You will need plenty of vinegar and baking soda, because the kids will love it so much they will use it all up quick.

This activity is a bit of science and a bit of pretend play rolled in to one. You can talk to the kids about how the acid in the vinegar reacts with the alkaline in the baking soda to cause a bubbling, fizzing reaction. Just like magic!

Miss K was always a fan of pretend kitchen play, so this was something I knew she would really love.

ingredients needed to make bubbling brew

ingredients needed to make bubbling brew

Lets make some…

Witch books for kids

 

You will need:

• 2L bottle of white cleaning vinegar (or the cheapest vinegar you can buy)
Baking Soda (we used about half of a 500g box)
• Food colouring or liquid water colours (food colouring stains hands and clothes so liquid watercolours are a better choice)
Plastic creepy crawlies and snakes
• Props from the kitchen: A large pot, a wooden spoon, a table spoon, bowls and a measuring jug
• Water

How to:

To make the bubbling brew first pour 4 cups of water into the large pot, and stir in 3 heaped tablespoons of baking soda. Then add a few drops of food colouring and the plastic creepy crawlies.

adding baking soda to bubbling brew pot

adding baking soda to bubbling brew pot

plastic bug goes into the witches brew pot

plastic bug goes into the witches brew pot

spoon full of bugs from the witches brew pot

spoon full of bugs from the witches brew pot

Give it all a stir and then add vinegar. Miss K poured the vinegar into the measuring cup herself and then poured it all into the brew.

now add vinegar to the pot

now add vinegar to the pot

We had some awesome fizzing reactions!

fizzing reaction from baking soda and vinegar

fizzing reaction from baking soda and vinegar

witches brew made from fizzing baking soda and vinegar reaction

witches brew made from fizzing baking soda and vinegar reaction

fizzy science activity for kids

fizzy science activity for kids

You can keep adding tablespoons of baking soda and cups of vinegar as much as you like. Miss K used up all of the 2L bottle of vinegar and also finished off the box of baking soda which was about half full to begin with. I’m sure she would have kept going much longer if she could have!

adding more baking soda

adding more baking soda

bug stew

bug stew

Once the supplies were all gone she made a great game of serving the “poison stew”, as she called it, into plastic bowls for pretend dinners. This kept her busy for a good half hour after our activity was over – she really didn’t want me to pack it away.

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bubbling brew for kids

bubbling brew for kids