Exploding Chalk Paint

Exploding Chalk Paint Bags - Kids Messy Play Activity

This exploding chalk paint messy play activity is a LOT of fun! I enjoyed it just as much as the kids! (I had an inkling they would enjoy this as they absolutely love playing with ice chalk paint too). The vibrant colours are amazing and the exploding ‘pop’ is somehow very satisfying.

We experimented with this process in a couple of different ways in order to get the best explosion. I’ll outline both versions below so you can choose how you wish to do the activity…. or you may prefer to experiment yourself.

What You’ll Need:

  • Cornflour
  • White vinegar
  • Food colouring (a variety of colours)
  • Sandwich size ziplock bags
  • Baking soda
  • Spoon
  • Paint brush
  • Paper towels

How to Make Your Exploding Chalk Paint:

In a large bowl mix together equal parts of cornflour and vinegar (I used 2 cups of each). Divide this into the ziplock bags. I used 4 bags but it didn’t need this much mixture in each bag, so I’d recommend dividing it into 6 bags. The more mixture in the bag, the bigger explosion, but the reaction and resulting ‘pop’ also happens very quickly. If you’d prefer a bit of suspense before the pop, don’t fill the bag too much.Exploding Chalk Paint - Messy Play ActivityAdd a few drops of food colouring to each bag (the more you use the brighter and more vibrant the colour), seal tightly and mix it up.
Head outside with your exploding chalk paint bags. I popped Craft Aprons on my kids to protect their clothing (and save me washing!).Messy Play Activity: Exploding Chalk PaintBefore adding the baking soda to each bag make sure you give the bag a good mix again as the cornflour can start to separate and settle at the bottom of the bag.

For the explosion to occur, you simply need to add baking soda to each bag, very quickly seal it up tightly (I only partly opened the bag just enough to get the baking soda in) then pop it down on the ground and wait. First time around, I used a heaped tablespoon of baking soda to ensure a decent reaction and explosion (and to avoid disappointed kids!), but you probably don’t need to use quite this much.

Instantly the bags blew up and burst open (in fact, so quickly I couldn’t even get a photo of all the bags before they burst!).
The vibrant chalk paint then bubbled and ran out of the bag.Exploding Chalk Paint Bags - Mud Mates Messy Play AdventuresDepending on the amount of chalk paint mixture and baking soda used you may need to shake the bag up a little to get the ingredients reacting with one another.

Master 6 and Miss 4 then had a blast touching it and painting with it. I also gave them more baking soda to pour on to create more reactions.Exploding Chalk Paint Bags - Mud Mates Messy Play AdventuresWe then decided to make some more and have another go, this time using  ‘baking soda bombs’. Simply cut a paper towel into a medium sized square and place a dollop of baking soda in the middle then fold the paper towel up around it.

Messy Play Activity: Erupting Chalk Paint Bags

Once you have your bags of exploding chalk paint ready pop a baking soda bomb into each bag and quickly seal the bag tightly. This provided a different experience and the explosion of the bags bursting was not quite as spectacular.
The slower reaction meant a delayed explosion which gave everyone time to enjoy the build up and the kids loved touching the bags and waiting for them to burst.Exploding Chalk Paint Bags - Mud Mates Messy Play Adventures

Messy Play Activity: Exploding Chalk Paint


For fun, simple arts and crafts and messy play inspiration sign up to our newsletter.

You can also follow us on Facebook, Instagram and Pinterest for more inspiration. 

YOU MIGHT ALSO LIKE...

How to Make a Rainbow Salt Writing Tray

A rainbow salt writing tray consists of a tray like container with a colourful rainbow [...]

Colourful Cotton Bud Painting – Easter Eggs

Are you searching for a delightful Easter activity that combines messy play and an outlet [...]

8 Picnic Crafts for Preschoolers

What could be better than having a picnic? Having a picnic and doing picnic crafts! [...]

Run Run Gingerbread Men Cookies

If the story wasn’t good enough (which it is), then there’s the delicious gingerbread men [...]

Spooky Halloween Crafts for Kids

Things are starting to look spooky around Mud Mates headquarters, and it’s all due to [...]

Navigating the 6 Stages of Play

Navigating the Six Stages of Play with Your Child with Loose Parts Thank you to [...]

Having Fun Making Giant Bubbles

Making giant bubbles has got to rank as one of the most exciting things to [...]

7 Nature Play Activities for Younger Kids

Nature and kids are a match made in heaven! Nature never ceases to captivate, entertain [...]

2 thoughts on “Exploding Chalk Paint

Leave a Reply

Your email address will not be published. Required fields are marked *