Paper chromatography

Front

What is chromatography?

Back

A laboratory technique used to separate a mixture.

Front

Chromatography separates the mixture of dyes on the basis of their __________.

Back

solubility

Front

Why must the base line be drawn in pencil and not pen?

Back

Pencil is insoluble in water.

Front

A substance is soluble if it can be dissolved. In paper chromatography, the most soluble solute __________.

Back

travels furthest away from the start point.

Front

What is the purpose of the base line in paper chromatography?

Back

To provide a starting point for the separation of substances.

Front

What is the mobile phase in chromatography?

Back

The solvent that carries the solute through the stationary phase.

Front

What is the stationary phase in paper chromatography?

Back

The paper that holds the mixture and allows separation.

Front

What happens to less soluble substances in paper chromatography?

Back

They do not travel as far as more soluble substances.

Front

What is a chromatogram?

Back

The visual result of a chromatography experiment, showing separated substances.

Front

What role does the solvent play in chromatography?

Back

It helps to dissolve the solute and carry it along the stationary phase.