Across
- 2. The two types of chlorophyll
- 5. The chromatography beaker must be this
- 7. Substances at the top of a chromatogram have least
- 13. Most solvents are this
- 14. Different amino acids have a different ....
- 15. A polar solvent
- 16. Position the solvent has travelled
- 17. a non-polar solvent
- 19. Colour of the fastest moving pigment in grass
- 20. Rf values are always less than this
- 21. Not stationary
- 22. This chromatography is cheaper than TLC
Down
- 1. Chemicals 'attracted' to the stationary phase
- 3. Chemical composition of paper
- 4. Solvents used are often a ...
- 6. Not mobile
- 8. Calculated to show the location of a spot
- 9. The stationary phase is normally this
- 10. Material on a TLC plate
- 11. A common solvent
- 12. Chemical used to make amino acids coloured
- 18. Amino acids have a range of this