Today for #PlayfulPreschool, I will be sharing with you one of our fun preschool science experiments that my daughter J thinks is the most awesome thing in the world. To be honest, as long as something happens in our experiments, she thinks it pretty awesome. With Spring and St Patrick’s Day coming up, I decided to see if I could make the colours of the rainbow (well a few of them at least) disappear.

Rainbows, how many colours do you know? Here is a fun rainbow colors preschool science experiment that is easy. Any kid could do it! Can you make the colours disappear?

Here is a quick background on why we chose this preschool science experiment. J is a very curious little person. Recently I was scrubbbing a pot that I accidentally forgot on the stove and sadly baking soda and vinegar was not doing the job. I decided to open my windows (in -20C weather) and try to use some bleach.

J immediately said, “Mommy, what’s that smell?” I replied and said it was bleach and I am using it to get rid of this lovely stain of black on my pot. Then an idea popped up. If the bleach can get rid of the black stain, what can it do for other colours?

What You Need

  • 1 cup of bleach
  • water
  • 3 primary colours food colouring
  • 4 or 5 small bowls or cups that are clear
  • a well ventilated area

1) Fill the cups or bowls with  2 oz of water.

2) Add 1 drop of food colour and stir it so that the colour is nicely mixed.

Rainbows, how many colours do you know? Here is a fun rainbow colors preschool science experiment that is easy. Any kid could do it! Can you make the colours disappear?

3) Add 1/4 cup of bleach to the food-coloured water.

4) Observe

Rainbows, how many colours do you know? Here is a fun rainbow colors preschool science experiment that is easy. Any kid could do it! Can you make the colours disappear?

If done correctly, the liquid in the cup or bowl should be completely clear when the bleach is added.

 

If you love this post, don’t forget to check out our other preschool science experiments as well as check out Learning 2 Walk on Facebook.

 

Don’t forget to check out what the other Playful Preschool bloggers came up with for the rainbow theme. Thanks for walking with me.

Rainbows, how many colours do you know? Here is a fun rainbow colors preschool science experiment that is easy. Any kid could do it! Can you make the colours disappear?

Rainbow Themed Activities by The PLAYful Preschool Education Team:

Rainbow Letter Formation Sticky Wall by Still Playing School

Language Activities for Preschoolers: Rainbow Climb by Growing Book by Book

Rainbow Sensory Bin by Tiny Tots Adventures

Inventing Their Own Songs to Encourage Creativity by Capri + 3

Rainbow Domino Game by Rainy Day Mum

Rainbow Patterns with Blocks by Mom Inspired Life

Scented Rainbow Science and Sensory Play by Fun-A-Day

Preschool Engineering with Rainbows by Natural Beach Living

Design a Rainbow Technology Connection by The Educators’ Spin On It

Disappearing Rainbow Colors by Learning to Walk

Creating Salty Rainbows with Preschoolers by Life Over C’s

Rainbow Ice and Salt Experiment for Preschool by Powerful Mothering.

 

 

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