Thursday, July 9, 2020

Colourful Witches Potion Experiment

Kids will watch on in awe as these bright witches potions bubble and brew to life. This colourful witches potion experiment is a fun activity to do at Halloween or for a Harry Potter or spooky themed birthday party. With a twist on the traditional bicarb and vinegar science experiment, these witches potions combine science and creepy crawlies into one spooky, fun activity kids will love.

witches potions erupting with creepy crawlies
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Double, double, toil and trouble; fire burn and cauldron bubble.  - Macbeth

With this magic witches potion recipe all children can experience what it's like to create potent potions in seconds. The question is will they be wicked witches or white witches? Only joking, there's no malevolence here, we're all good witches of the north.

WITCHES POTION SUPPLIES


  • Spoon
  • Small bowl
  • Shallow tray
  • Mini cauldrons
  • Bicarb soda {baking powder}
  • White vinegar
  • Food colouring
  • Spooky creatures {bats, spiders, rats etc} 

I have a small stash of Halloween items in a box that we seem to add to each year. We don't go all out with decorating the house and don't trick or treat, but I do love all the mini decorations for play activities. Our collection includes things like mini plastic skeletons, pumpkins, creepy crawlies like spiders, rats, bats, eyeballs and fingernails, skulls etc. You can usually pick them up for relatively cheap in September & October from department stores, dollar stores and even supermarkets. The little plastic figurines are great for sensory play and small world props, we keep them and reuse them each year {just wash and dry before storing them away}. For this activity you can add any creepy crawlies you like {or none if that's not your thing}. If you want to do this activity when it's not Halloween there's usually items still regularly available on Amazon. 


witches cauldron and sign on tray


When I presented the potion pots to my daughter I put three of them onto the tray with bats, rats and spiders scattered across the tray. I also added a the witch is in sign that we had to the tray. I then gave her a small bowl of bicarb soda with a spoon. What she didn't know was that I'd filled the cauldrons with vinegar, a few drops of food colouring and some spooky eyeballs and spiders. It was a complete surprise to her when she added the bicarb to the cauldrons and different colours bubbled out.

BUBBLE BUBBLE TOIL AND TROUBLE


girl making a chemical reaction in a witches cauldron


When the bicarb soda {also commonly known as baking powder} touches the vinegar in the cauldron it immediately causes a chemical reaction which results in carbon dioxide bubbles forming and erupting to expel the gas as fast as possible. The reaction is quite quick and can bubble and foam out of the cauldron and across the tray in a few seconds, which is why it's best to set this experiment up on a tray with a lip so it doesn't flow everywhere. The cauldrons can continue to erupt by adding more bicarb, until there is no vinegar left inside.

child doing bicarb and vinegar reactions
baking powder and vinegar reactions in a mini cauldron



My big girl loved making the witches potions bubble and boil over to see which colours would erupt out. As they erupted some of the little spiders would come floating out and she could see the eyeballs spinning around inside the cauldrons. She kept making them erupt until there was no bicarb soda left. The tray does end up becoming a bit of a mess {and can end up a muddy brown depending what colours you use} however it's perfectly safe for kids to play with as the chemical reaction results in water and carbon dioxide {which is released through the bubbles} so the liquid is safe to touch. It's also easy to clean up by washing away under a tap. The food colouring shouldn't cause staining, however if you're worried only use 2-3 drops for each cauldron.

colourful witches potions for halloween



OTHER SPOOKY IDEAS TO TRY




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Disclosure - This post contains some affiliate links for your convenience which means I may earn a small commission, at no cost to you, should you make a purchase.

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