Science

Aim: To separate the different pigments in links or dyes

Method:
1. Cut a strip of filter paper that long enough to reach the bottom of your piece of paper.
2. Rule a line in pencil approximately 2 cm from the bottom of your piece of paper.
3. Fill your beaker with enough chromatography solution to fill your beaker to a depth of 1 cm.
4.Place a dot of link above the ruled lines on your filtered paper. You need to produce a concentrated dot of link so repeated applications may may be necessary.
5. Suspend the strip of paper from a pencil or stick. You may need to use adhesive tape to stop it from falling into the solution.
6. Wait to see what happens. It is important that you do not disturb the beaker. If the solution comes in contact with the link dot, the link will run down the solution, rather than move up the filter paper.

Discussion: Chromatography is separating a mixture of coloured compound. The filter paper went in the test tube of water and absorbed the filter paper to make the paper dye with colours.

Result: