Seaweed spheres – cross-linking sodium alginate gels

Описание к видео Seaweed spheres – cross-linking sodium alginate gels

The borax/PVA slime experiment is a lot of fun, but a demonstration of the cross-linking in sodium alginate shows students the creation and destruction of gels through the exchange of ions of different charge. If using food-grade ingredients outside of the lab, the products can be eaten!

Read the article that accompanies this video in the January 2016 issue of Education in Chemistry at http://rsc.li/EiC116ec

This is part of the Education in Chemistry Exhibition Chemistry series: chemistry demonstrations to capture your students' imaginations: http://rsc.li/EiCExChem

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