What are the two properties of the ink components that determine their movement along the chromatography paper/fabric (see Introduction) ?

Solubility of the ink in the solvent

Component substances in the ink

Explanation:

Movement along the chromatography paper/fabric is determined by the solubility of the ink in the solvent and the component of the ink itself.

Chromatography is a separation technique used to separate complex mixtures.

The solution containing the mixture to be separated is spotted on a line near the end of the paper and then the paper is placed in a tank.

The solvent moves up the paper and it separates the mixtures in the spot into a number of different spots.

We can see that the solubility of the ink and component of the ink determines how they will be separated.