Hello!
In the experiment with the black felt-tip pen, you discovered that black ink can be separated into its color components by dissolving it with water. Will this also work with colored felt-tip pens? Let’s try it out now!
You will need the following for paper chromatography with colored felt-tip pens:
Before you conduct the experiment, think about this:
What do you suspect will happen if you draw on filter paper with the felt-tip pens and place one end in a liquid? Will there be a difference between water and oil as the mobile phase? Write your hypotheses in the blog.
Here you will find the instructions for the experiment. Click on the arrows to navigate forward or backward:
You can also open and download the instructions and experiment log for the experiment.
Tip: You will need patience for the experiment variant with oil! While the experiment is running, you can solve a puzzle in the community.