Chromatography
- Get two black markers--one being permanent and the other is water based and has a felt tip.
- Cut strips from a coffee filter
about 1/2 an inch wide and several inches long. You may use paper towel, but I like filter paper.
- Take the permanent marker and draw a
line about 1/2 inch from one end of the paper strip. Mark over the same line several times to get enough ink on the paper.
- Take the other
marker and do the same thing on a new strip of paper.
- Place a 1/4 inch of water in a glass container.
- Tape the two paper strips to a pencil
that will rest on the top of the glass. The marker line should be close to the water. Let this sit for 15 minutes.
Questions
- Which marker ink moved up the paper and separated into various colors?
- Which color is heaviest based on how far it moved? Repeat the experiment using alcohol or better yet, paint thinner.
- Does temperature affect this experiment?
- Check out other colored markers. Does any marker have only one color in
it after checking in water one time and in paint thinner another time?