GCSE Chemistry – Chromatography

Last updated: 06/07/2020

Learning Objectives

-I can describe the process of paper chromatography
-I can interpret chromatograms and calculate Rf values

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  1. What is the definition of chromatography?

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  2. What can chromatography be used for?

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  3. What can chromatography be used for?

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  4. What is the definition of the origin line?

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  5. What is the definition of the solvent line?

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  6. What is the definition of the mobile phase?

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  7. What is the definition of the stationary phase?

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  8. Within paper chromatography, what is the mobile phase?

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  9. Within paper chromatography, what is the stationary phase?

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  10. What solvent should be used?

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  11. Where should the solvent be held?

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  12. What is used to draw a line during paper chromatography?

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  13. What should be used to transfer the substances onto the paper during chromatography?

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  14. Where should your pencil line be drawn?

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  15. By the end of the chromatography, how many pencil lines should be drawn on the paper?

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  16. What should the paper be left in?

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  17. How deep should the paper be left in the water?

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  18. What should be done to the paper chromatography after it has been left in the solvent?

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  19. What forms during paper chromatography?

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  20. Once the chromatogram is complete what should be measured?

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  21. What should be used to measure the distance of spots formed?

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  22. What does Rf stand for?

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  23. What are Rf values?

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  24. What is the equation to work out Rf values?

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