chromatography

chromatography

1. to separate and identify components of mixtures

2. draw a line by pencil

3. common solevents used = water & ethanol

4. direction of solvent is up

5. 2 factors effect

   • solubility of substance in solvent
   • how strong attraction is

6. substance rise with the solvent as the strength of attraction is more with the solvent & substance than the paper & substance

7. some substance don't rise as less attraction from paper

8. to check which colourings are in food

9. forensic scientists analyse DNA, paints & inks from crime scenes

10. museums analyse paints to restore old paintings or to detect forgeries