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Plant Chromatography for Kids

October 19, 2012

Leaf Photo for Autumn Lesson Plans

Found this on a US site brilliant resources for kids this autumn:
What started out as a food science experiment turned into a seasonal one this morning, and we ended up outside pulling leaves off our Maple tree to see how the pigments from a red leaf would compare to those from a green one. Liquid chromatography allows you to separate the pigments (molecules that give plants color) using paper as a solid medium for the molecules to travel up, and alcohol as the solvent that separates and carries the pigments up the paper at different speeds, depending on how large they are. There’s more here:

Plant Chromatography for Kids.

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