Date: 29th Jan 2018 @ 5:06pm

Chromatography is a method used to separate mixtures.

We had to do some detective work this week to find out who'd been eating biscuits from Mrs Nolan’s lunch box. A note was left behind apologising. We collected the teacher’s pens together and tested them using chromatography. We quickly matched up the pen to a sample from the note….and guess who?

Chromatography with felt tip pens

We all had a go at doing some chromatography ourselves. Everyone chose some felt tip pens and put small dots of colour on some filter paper. Using a pipette we added a few drops of water. We also tried the same thing but using Smarties.