Chromatography

Chromatography is a Way of Identifying an Object by Using its Chemical Base.

It can be used with:

· Make up

· Pens

· Food colouring’s

For instance, if someone has been sending note to someone the police might get some suspects and get some pens and use chromatography to find out whose pen it might be.

Chromatography is a method for analyzing complex mixtures (such as ink) by separating them into the chemicals from which they are made.

You can you try this by getting a couple of pens (permanent marker, writing pen, hand writing pen ect.) get a strip of paper and 1cm above the bottom of the paper draw a line. Evenly spread out draw small dots – go over about 5 times – then put is a small glass of water (stop the water just before the dots).

It’s amazing what some pens do.

It’s the molecules in the mixture that make the dye spread.