chromatography

• what is chromatography?

  a physical process that does not involve a chemical reaction in which no new substances are made.
• what does chromatography allow us to do?


  separate substances based on their different solubilites.
• what is the first step of the process?

  drawing a baseline in pencil 1cm up from edge.
• what is the step after drawing the baseline?


  put a dot of a colour then put a dot of a different colour next it - then place paper into a solvent
• what is the step after marking the paper with ink?

  solvent makes it's way up the paper - dissolving the ink in the two coloured dots; meaning that the ink is now carried up the paper and dissolved in the solvent
• what is the stationary phase?


  the chromatography paper
• what is the mobile phase?


  the solvent
• what does it mean if there is just one colour after the solvent moves?


  the substance was pure.
• what does it mean if there is two colours after the solvent moves?


  that the colour was a mixture of those two colours
• what is a more soluble substance more attracted to?


  the mobile phase (solvent), than a less soluble substance
• a more soluble substance travels further than a less soluble substance.