Thursday, March 8, 2012

Chromatography by Big Brother

Today Big Brother is sharing his recent science experiment - chromatography.

We learned about separating colours.  I found out that black inks are not all the same.

First we made a dot with some different black pens.  We labelled them so we'd know which one was which.

When they were all ready we stuck them to the side of a glass and filled it with water.

We watched and waited.

  I was surprised to see the water creep up the paper.

As it crept, it took the ink with it and spread out the colours so we could see them all!

Chromatography is amazing!

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