Chemistry

• Chromatography works because different dyes will move up the paper at different rates, the most soluble move up the fastest
• Chromatography method:

  1. draw a line in pencil near the bottom of a sheet of filter paper
  2. add dots of inks to the line and place in your solvent
  3. make sure the pencil line is above the solvent line
  4. place a lid on top of the container to stop it from evaporating
• Rf = distance travelled by a solute / distance travelled by solvent