You will love seeing the rainbow come together in this simple science experiment!
- All you'll need is
- Paper Towel
- Washable Markers
- Water
- 2 Small Glasses
The science part:
This science experiment is a great example of chromatography. Chromatography is a way of separating out a mixture of chemicals. If you ever got a paper with ink wet you would have seen the ink move across the page in streaks. Capillary action makes the marker dye move up the paper towel. The water moves upward through the paper towel, lifting the washable dye molecules with it. Because the washable markers are water-based, they disperse in water.
All you need to do is fold over a piece of paper towel (so you have 2 pieces on top of each other). The shorter your piece of paper towel, the better it will connect! Make sure that you are using an uber absorbent paper towel.
- Then you will need to draw rectangles of the rainbow colors on each end, make sure to fill the colours in well so there is enough dye to travel across the paper towel.
Fill your cups with water. Then place the paper towel into the cups, with one end in each cup. Do not place the ends too deep in the water or the dye may dissolve into the water instead of moving up the paper towel.
Watch as the dye slowly makes it’s way up with the water to meet the other side in the center of the paper towel.
Make sure to keep your towel, let it dry out to use on another project. You can even use the water as paint!
*If you tried this experiment with permanent markers it would not work. This is because the markers are not water-based (they are alcohol-based) so the dye in the marker does not travel with the water.
Please tag @playspirations or myself @mywildsparrows if you do end up making this as I'd love to see your creations!
Please tag @playspirations or myself @mywildsparrows if you do end up making this as I'd love to see your creations!