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1.2

Minor Versionm

by Procheta Mallik

Introduction

Using a litmus paper, categorise items from daily life (like soap, fruits, shampoo conditioner, antacids etc) as acidic, neutral or basic.

Tools

Parts

    • Do not ingest any of the materials

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    • Feel free to collect a whole host of household samples

    • These could include all kinds of food items, medicines, ointments, cosmetics, pen ink, toiletries, gels, glues etc.

    • Here, we have documented this experiment with a handful of such items, including nail polish, dettol, banana, shampoo and a soft drink

    • You may cut the litmus paper strips in half to be able to test even more items

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    • Get some nail polish and a blue litmus paper strip.

    • Dip the blue litmus paper in the nail polish .

    • Observe the colour change .

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    • Get some dettol and take a red litmus paper strip.

    • Dip the red litmus paper in dettol.

    • Observe the colour change .

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    • Get a banana and a blue litmus paper strip.

    • Test the blue litmus paper on banana.

    • Observe the colour change .

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    • Collect some shampoo and a red litmus paper strip.

    • Dip the red litmus paper in shampoo.

    • Observe the colour change .

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    • Get any soft drink and a blue litmus paper strip.

    • Dip the blue litmus paper in the cold drink.

    • Observe the colour change .

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    • Perform the litmus test on any other household good that is liquidish, or if it is a solid and soluble in water (e.g. medicine tablet), then mix it in water and test it

    • When blue litmus turns red, what does it indicate?

    • Similarly, when red litmus turns blue, what does it indicate?

    • Categorise all the substances into the following 3 categories: red-turns-blue, blue-turns-red and no-change

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    • Make sure the item isn't too dry

    • Do not use used litmus paper to test the next item

    • Do not contaminate one item with another

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Finish Line

Vishal Bhatt

Member since: 04/26/2017

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49 Guides authored

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