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1.4

Minor Versionm

by Procheta Mallik

Introduction

Colours can then be separated by the process called chromatography, where water is drawn up using a wick and the colours separate at different radii as they interact on the wet filter paper.

Video Overview

  1. Take an assortment of sketch pens (different colours) and a filter paper. Make a hole at the centre of the filter paper. Make 5-6 different coloured dots around the hole. Take some water in a plastic glass or a waste bottle cutout.  Take a tissue paper and roll it as shown in the figure .
    • Take an assortment of sketch pens (different colours) and a filter paper.

    • Make a hole at the centre of the filter paper. Make 5-6 different coloured dots around the hole.

    • Take some water in a plastic glass or a waste bottle cutout. Take a tissue paper and roll it as shown in the figure .

  2. Insert one end of the folded tissue paper through the hole  you made on the filter paper. Dip the other end of the tissue paper in the water in the plastic cup. Keep it undisturbed for some time.
    • Insert one end of the folded tissue paper through the hole you made on the filter paper.

    • Dip the other end of the tissue paper in the water in the plastic cup.

    • Keep it undisturbed for some time.

  3. The filter paper absorbs water through the tissue paper. Observe the colours carefully; for example, look at how the green and orange colours in our case have split into further colours after the separation.
    • The filter paper absorbs water through the tissue paper.

    • Observe the colours carefully; for example, look at how the green and orange colours in our case have split into further colours after the separation.

  4. Download the observation table and fill it up.
    • Download the observation table and fill it up.

    • Make sure one end of the tissue paper is held by the hole .

    • Make sure that the coloured dots are small and concentrated.

  5. Variation 1 - Replacing liquid (mobile phase) . Variation 2 - Replacing wick. Variation 3 - Replacing pigment with plant extract.
    • Variation 1 - Replacing liquid (mobile phase) .

    • Variation 2 - Replacing wick.

    • Variation 3 - Replacing pigment with plant extract.

    • Please go to the Variations instruction guide to implement them.

Finish Line

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Vishal Bhatt

Member since: 04/26/2017

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