Chromatography

In Art Week, both the Junior and Senior Science Clubs conducted experiments to do with chromatography.  We wanted to investigate how complex colours are made up.  We used a wide variety of felt pens and strips of coffee filter paper dipped in water.  The water travelled up the paper through capillary action and split the complex colours into their core components as it went.  The results were quite amazing - it is interesting to find out that some quite ordinary looking colours are made up of 3 or 4 core colours.