Chromatography

Aim:
To separate the different pigments from using chromatography.

Method:
1. Draw a line across the paper in pencil, 5cm from the bottom.
2. Draw a coloured dot in the middle of the line.
3. Measure out 10mL of water and place in the test tube.
4. Place the filter paper in the test tube and fold over the side. Make sure the pencil line is not in the water.
5. Wait for 5 minuets and observe the results.

Equipment:
1. Felt tip pen
2. Filter paper strips
3. Test tubes
4. Measuring cylinder
5. Pencil

Results:
I choose green and it stretched out and half of it was blue and the other half was yellow. So my one showed 3 pigments.

For the second one we had to do a black dot. It had 5 pigments. Blue, Purple, Black, Orange and a little bit of Pink.

As I was watching the colours change it was changing because the water was making it change. The darker the colour is the more pigments it will have.