I’m sure we all have pretended to make witches or wizard’s brew as a child. Mix up a bubbly brew in a potions lab fit for any little wizard or witch with an awesome Halloween chemistry experiment and science activity. I’m always looking for fun things to do with my kids. This is fun to watch no matter how old you are.
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The weather has been perfect here for this. We can get outside and make a mess! And this outside makes clean-up easy as we can just hose everything down. When we did the baking soda bubbles on the kitchen floor, I had a gritty mess to clean. Oops!
This would make a fun Halloween theme science experiment. Use some spooky, Halloween colors for your food color. Orange. Black. Dark green. Red (blood).
How to Make Different Colors for Halloween:
Orange: red and yellow.
Black: 1 part blue, 2.5 parts green, 3 parts red
Dark Green: Lots of blue, little yellow
What You Need:
How to make a Wizard’s Brew:
You’re going to start with your jar (or in our case an old glass candle jar) half-filled with vinegar, with a few drops of color added to it. Squeeze in some dish soap, give it a stir.
Now add a heaping spoonful of baking soda. I put our baking soda into a silicone bowl, mainly just to get it outside without losing it all on the walkout, but it also made it easy to dump into the jar.
The dish soap makes it bubble rather than the quick fizz. A nice volcano eruption. It is not a quick erupt and done but lasts for a few minutes.
Now, anything mess-related would not be complete without my children playing in the mess. They’re washable. Let them have fun. This has dish soap in it, meaning your children aren’t going to be stained whatever color you use.
This is fun. Go have fun with your kids.
What Is the Science Behind It?
The reaction between the hydrogen peroxide and the yeast is called an exothermic reaction. You will feel the warmth on the outside of the container because energy is being released.
The yeast helped to remove the oxygen from the hydrogen peroxide creating tons of tiny bubbles that made all that cool foam. The foam is just the oxygen, water, and dish soap that you added.
If you pay close attention, the reaction continues for quite a while and looks quite different depending on the size of the container you use!
Experiment with different sizes of flasks for your wizard’s brew!
- food color
- dish soap
- baking soda
- glitter (optional)
- large jar
- You're going to start with your jar (or in our case an old glass candle jar) half filled with vinegar, with a few drops of color added to it.
- Squeeze in some dish soap, give it a stir.
- Now add a heaping spoonful of baking soda. I put our baking soda into a silicone bowl, mainly just to get it outside without losing it all on the walk out, but it also made it easy to dumping into the jar.
- Watch the magic. The dish soap makes it bubble rather than the quick fizz. A nice volcano eruption.
I’m already planning on trying this again. I have some small little jars we’ll be using, the more bubbles and wizards brew the better. Plus more colors, and if I can hold off until I get to the store, glitter.
This could be a great addition to a witch’s Halloween custom/set-up.