Pulling Colors Apart Science Experiment
In this fun and easy science experiment, we’re going to explore and investigate colors by pulling them apart.
- Paper towel
- Green food coloring
- A glass with one inch of water inside
- Tear the paper towel into a long narrow strip.
- Put a drop of green food coloring about two inches from the bottom of the strip of paper towel.
- Hang the paper towel into the water so that the spot of food coloring is above the water.
- Wait about 15 minutes.
- The original green spot will be gone and a yellow and blue spot should be visible.
How it Works:
As the food coloring is drawn up the paper towel, the different pigments separate. The reason is the pigments are different weights, travel at different speeds, and thus end up in different places. Chromatography is the technique of separating mixtures.
Make This A Science Project:
Try different colors. Try different types of paper. Try substituting water with vinegar.