Making Snow from Nappies

Making Snow from Nappies

Nappies are deigned to absorb large amounts of liquid, and keep the liquid away from the baby's skin and so prevent nappy rash.

The means by which they do this is the use of sodium polyacrylate; a polymer which has the ability to absorb many times its own weight of water. Sodium polyacrylate (sometimes called 'waterlock') has the he chemical formula [-CH2-CH(COONa)-]n and is used in products such as detergents, coatings, thickening agents, fake snow and, of course nappies. It has the ability to absorb as much as 200 to 300 times its mass in water.

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Experiments you can do at home

Welcome to Dr Hal's Backyard Science, experiments you can try at home. These are experiments that you can try in your garden or house with parental permission and supervision. Each of them comes with some health and safety instructions that an adult must read. The text is reproduced by kind permission of Education in Chemistry a journal of the Royal Society of Chemistry.

The Experiments:

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