Editing Chromatography (section)

====Paper chromatography====
[[File:Paper chromatography in progress.jpg|thumb|Paper chromatography in progress]]
[[File:Chromatography tank.png|thumb|Paper chromatography]]
{{further|Paper chromatography}}
Paper chromatography is a technique that involves placing a small dot or line of sample [[Solution (chemistry)|solution]] onto a strip of ''[[chromatography paper]]''. The paper is placed in a container with a shallow layer of [[solvent]] and sealed. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent. This paper is made of [[cellulose]], a [[Chemical polarity|polar substance]], and the compounds within the mixture travel further if they are less polar. More polar substances bond with the cellulose paper more quickly, and therefore do not travel as far.