PR5.4 Making Slime

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Right click here and open up a new window for notes on the background chemical theory and questions which could be used during a class practical or demonstration.

PVA glue is a solution containing polymer chains - it flows and can be spread as the polymer chains are able to glide over one another. This video demonstrates what happens to it when sodium borate is added which serves to crosslink the polymer chains.

For further information see Salters Advanced Chemistry, 2000, Activities and Assessment Pack, Second Edition, ISBN 0 435 631217