Halloween is just around the corner, so there’s no better time to make some spooky witches potions. Make potions for fun, at a party or even as part of a lesson. We’ve got fizzing potions, slimy potions, colour changing potions and even dry ice potions.

Teaching with Potions

Weigh and measure out ingredients.

Use a measuring jug to measure specific amounts of liquids.

Learn about simple chemical reactions with baking soda and vinegar.

The BEST Witches Potions

Fizzy Witches Laboratory

Here are Science Sparks we like to make things fizz, so first up is our fizzy witches lab.

Witches laboratory

What you need to make fizzy potions

Baking Soda ( Bicarbonate of Soda )

Food colouring


Test Tubes


How to make witches potions

Place a teaspoon of baking soda in each test tube and a few drops of food colouring. You could add a little water and washing up liquid as well.

When you’re ready to make your potions fizz use the pipette to drop a little vinegar into each test tube.

Witches laboratory

Experiment with different amounts of baking soda, washing up liquid and vinegar to find the perfect fizz!

Spider Slime

This stretchy slime has a great texture and is very easy to make. Squish it, stretch it, pour it or just get your friends to stick their hands in it.

What you need:

Chia seeds

PVA glue



How to make spider slime

First you need to soak the chia seeds in water for a few hours. When they look thick and slimy add a good dollop of PVA glue, and enough cornflour to make it thick and gloopy. For a drier slime add more cornflour.

If you’re worried about children trying to eat the slime, you can miss out the PVA glue, it just won’t stretch as well.

spider slime
Witches laboratory


Magic Colour Changing Potions

Colour changing potions using red cabbage indicator are a great first introduction to acids and alkalis. Experiment to find out how many different colours you can make!

colour changing potions made using red cabbage indicator

Edible Magic Potion

We really love the look of this steamy potion over on Fun Crafts Kids. Remember to check out the safety warnings first.

Goblin Snot Juice

We shared some easy potion ideas with Day Out With The Kids a while ago. Anyone for some creepy Goblin Snot Juice or colour changing bat broth as a witches potion?

Witchy Density Jar

This witchy density jar is made in a similar way. Just pour coloured water into a jar with a layer of oil on the top, then try to find different creepy objects to float on the layers.

Witchy Density Jar
Wizard Potion

More Potion Ideas for Kids

Print my FREE potion recipe and create your own potion with the blank recipe page.

Potion Recipe Instructions
Blank potion recipe card

The Imagination Tree has a beautiful Fairy Potion that you could turn into a Halloween potion.

We love the look of this polyjuice potion from This Grandma is Fun too.

If you’re looking for an easy Halloween costume idea, Red Ted Art is full of inspiration!

More Halloween Science Ideas

Try our Halloween party science ideas including fake blood, pumpkin lava lamps and spider decorations.

My new book Gross Science is out just in time for Halloween ( in the US – it’s slightly later in the UK ) this year. Gross Science is jam packed full of gruesome, sticky and slimy science experiments for kids! Make jelly scabs, chocolate poo, slimy slugs, a blood model and lots more experiments sure to creep out your friends and family!

Gross Science book for kids

I’ve also got a fun collection of Halloween STEM Challenges you might like. Including spider drawing robots, blowing up pumpkin balloons and more!

Witches potions for Halloween. Make fizzy, steamy and slimy potions for Halloween #Halloweenpotions #Halloweenscience #scienceforkids #fizzpotions #

The post 10 of the best Witches Potions appeared first on Science Experiments for Kids.

Originally posted at Science Sparks