Y8 - topic 1 - lesson 5 (chromatography)

What is the name of the technique that can be used to separate a mixture of coloured substances?

Chromatography is........

• a way of separating different liquids from each other.

• a way of separating different coloured substances from each other.

• a way to separate a liquid from a solid which doesn’t dissolve.

• a special way to draw a graph.

Chromatography will only work if......

• a lot of each chemical is used.

• the special paper has been warmed before it is used.

• the special paper is moved during the experiment.

• the chemicals to be separated dissolve in the solvent used.

If a coloured substances travels a long way through the paper during chromatography this means that.......

• it is very soluble in the solvent

• it is very warm

• it is not very soluble in the solvent

• it is very cold

If a coloured substances moves very little through the paper during chromatography this means that.......

• it is very soluble in the solvent

• it is very warm

• it is not very soluble in the solvent

• it is very cold

During chromatography, the ______________ travels through the paper taking the coloured substances with it.