Paper chromatography

纸层析

We need thick kitchen roll, felt pens, water.

Fold the kitchen roll using two layers.
Draw a dot on the paper.
We used brown and green color felt pens.




Using a knife to drop some water on the dots.









Wait for a few seconds, the result:
The green dot is seperated to blue and yellow
the brown color is separated into orange and yellow, green color.










Lucy is trying her experiment.