The kids and I recently created a rainbow in our kitchen. How did we do that, you might ask? We made a Skittles density rainbow using a bag of Skittles candy and a bit of science knowledge!
This would make a great St. Patrick’s Day activity for kids. It would also be a great activity at any time of the year to illustrate the scientific property of density. Or to learn about rainbows. Or it can just be a fun way to use up some extra candy. 🙂
I received a copy of the book “Candy Experiments” to review. (See my review here.) I am sharing this Skittles density rainbow activity from the book because I enjoyed the activity so much and believe my readers will too, not because of any obligation I have as a condition of receiving a copy of the book. See my disclosures for more information.
To make your own rainbow, you first need to open a pack of Skittles and sort them by color. We were only able to find the tropical Skittles, but I would recommend the regular Skittles for the most vibrant rainbow effect.
As explained in Candy Experiments by Loralee Leavitt, we placed different numbers of Skittles into glasses as follows:
- 2 red Skittles
- 4 orange Skittles
- 6 yellow Skittles
- 8 green Skittles
- 10 blue Skittles
We then added 2 tbsp of water to each glass and let the Skittles dissolve.
When we returned about an hour later, the Skittles had completely dissolved into the water.
Next was the tricky party. We needed to get each of the liquids into the same container without mixing them together. I didn’t want to just pour one liquid on to the other, because I felt that would result in too much mixing. So I opted to use one of our plastic pipettes to gently add each liquid. I suctioned up the liquid from its glass and then gently squirted it along the side of the rainbow glass so each color would come to rest gently on top of the previous one.
Please excuse the quality of this photo showing me doing adding the colors to the glass – I let my four year old take the picture for me. 🙂
I added the colors in reverse rainbow order – blue, green, yellow, orange, and then red.
And after all this work, we ended up with quite a beautiful rainbow in our glass!
This and many more candy activities can be found in the book Candy Experiments by Loralee Leavitt.
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