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1.1

Minor Versionm

by Vishal Bhatt

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 the plastic glass. Take another tissue paper and roll it as shown in the figure .

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  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.

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    • The filter paper will absorb water through the tissue paper.

    • Separation of colours can be seen .

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

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

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    • What will happen if you dip the end of foam (used instead of tissue paper) in the water and put 5-6 coloured dots on the foam? Do the colours spread?

    • What will happen if you do the same test with tracing paper instead of filter paper?

    • Also try the same experiment with a piece of white chalk, on which you mark the coloured dots and submerge the chalk partially in water.

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Finish Line

Vishal Bhatt

Member since: 04/26/2017

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