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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.
    • 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.
    • 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.

    • 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.

    • 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.

    • 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

Attached Documents

Vishal Bhatt

Member since: 04/26/2017

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