Separating Colors

A. Aim

To use paper chromatography to separate subtances in marker

B. Materials

• Marker (black, red, blue, green)
• Pencil
• Filter paper
• Glass
• Ruler
• water

C. Method

1. Cut a piece of filter paper aproximately 10 cm by 3 cm.
2. Rule a pencil line 2 cm from the end of the paper.
3. Make small dot of marker in the pencil line on he filter paper. Do the same step with another color in the different dot.
4. Pour tap water into the beaker to depth of 1 cm.
5. Stand the filter paper so that the end just dips into the water. Make sure that you keep the dot of marker out of the water.
6. Fix the filter paper to a pencil to hold it in the beaker.
7. Fix the filter paper to stand until the water has risen almost to the top.

D. Discuss and Explain

1.What colours were in the first to the top ?

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2. List the different marker that you tested. For each one, write down the colours that made up the pen color!

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3. How do you think the colours are actually separated using this method?

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E. Conclusion

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Download this file : worksheet