I can’t tell you how much my son loves anything to do with baking soda and vinegar. Especially this rainbow baking soda science experiment! It never gets old and we do it at least once a month. At our house, we pretend they are tiny volcanic erupting which makes it even more fun!
This activity is super easy to prepare and does not require too many ingredients. It does however contain soap so it is not taste safe. Just keep this in mind in case your child is one of those who love to put everything in sight into their mouths.
My son is three and he has gotten over that stage. Now he’s more into transforming his whole body into a canvas… But I digress.
I’m really excited to share this with you because I know your child will have so much fun! Also, bonus! You’re going to get some well-deserved downtime while your kids fix away!
Here’s what you’ll need:
- Baking Soda
- Food Colouring
- Dish Soap
The first thing you’ll want to do is prepare the “tiny volcanos”. To do this, I used a muffin tray and poured about 2 tbsp of baking soda into each cup.
Next, I added a couple of drops of food colouring to each cup. I had six cups in my muffin tray so we used six colours.
After this, I added a couple of squirts of dish soap into each cup. The dish soap will help to form the mixture into a cone shape or ball. Only add enough for the mixture to stick together and not crumble apart.
Once you mix each cup, take the paste and create little volcano shapes or balls on a plate or tray. Once this is done all that’s left to do is to add some vinegar to a cup with a dropper and let your kids go to town.
The Science Behind Baking Soda and Vinegar
Baking soda and vinegar react with each other because of an acid-based reaction. Together, baking soda, which is bicarbonate, and vinegar, which is acetic acid, create carbon dioxide. Carbon dioxide is what produces the bubbles we see when the reaction takes place.
With the added soap, the carbon dioxide will actually blow bubbles into it creating bigger bubbles!
The Role of Carbon Dioxide
Carbon dioxide plays a huge role in our environment. We see it in day-to-day things like the bubbles in our soda or in the way it causes cake batter to rise.
Plants and animals also use carbon dioxide in the processes of photosynthesis and respiration.
Carbon dioxide is a greenhouse gas that traps heat close to the Earth. If it weren’t for carbon dioxide, earth would freeze over and become inhospitable.
Thank God for carbon dioxide!
I hope your kids have fun doing this fizzy rainbow science experiment!
If you enjoyed this activity, check out these other ideas:
- DIY Clothespin Airplanes
- Dinosaur Footprint Painting
- Wearable Dino Feet
- DIY Preschool Counting Activity
Don’t forget to share your pictures with me @kheylapehlke! I love to see your little ones enjoying my activities, crafts and printables!
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