7LGL have been doing some chromatography this morning, a scientific technique which separates out mixtures based on their solubility. We have used to see all the different colours which make up the ink in felt tip pens.
7LGL have been doing some chromatography this morning, a scientific technique which separates out mixtures based on their solubility. We have used to see all the different colours which make up the ink in felt tip pens.