1. What is chromatography? A technique for separating mixtures
2. What is a pigment? A coloured material that is insoluble in water
Aim:
To separate the different pigments from ink using chromatography
Hypothesis:
The pigments will separate
Equipment:
Felt tip pen
Filter paper strips
Test tube
Measuring cylinder
Pencil
Method:
1. Draw a line across the filter paper in pencil, 5cm from the bottom
2. Draw a coloured dot in the centre of the line
3. Measure 10ml of water and place in the test tube
4. Place the filter paper in the test tube and fold it over
5. Wait 5mins and observe the results
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