GCSE Chemistry – Core practical 1 – Chromatography
Learning Objectives
-I can describe how chromatography can be used to identify if a compound is pure or a mixture
-I can calculate Rf values
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Question 1 of 25
1. Question
What is the definition of chromatography?
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Question 2 of 25
2. Question
What can chromatography be used for?
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Question 3 of 25
3. Question
What can chromatography be used for?
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Question 4 of 25
4. Question
What is the definition of the origin line?
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Question 5 of 25
5. Question
What is the definition of the solvent line?
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Question 6 of 25
6. Question
What is the definition of the mobile phase?
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Question 7 of 25
7. Question
What is the definition of the stationary phase?
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Question 8 of 25
8. Question
Within paper chromatography, what is the mobile phase?
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Question 9 of 25
9. Question
Within paper chromatography, what is the stationary phase?
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Question 10 of 25
10. Question
How many substances are being tested?
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Question 11 of 25
11. Question
What solvent should be used?
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Question 12 of 25
12. Question
Where should the solvent be held?
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Question 13 of 25
13. Question
What is used to draw a line during paper chromatography?
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Question 14 of 25
14. Question
What should be used to transfer the substances onto the paper during chromatography?
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Question 15 of 25
15. Question
Where should your pencil line be drawn?
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Question 16 of 25
16. Question
By the end of the chromatography, how many pencil lines should be drawn on the paper?
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Question 17 of 25
17. Question
What should the paper be left in?
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Question 18 of 25
18. Question
How deep should the paper be left in the water?
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Question 19 of 25
19. Question
What should be done to the paper chromatography after it has been left in the solvent?
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Question 20 of 25
20. Question
What forms during paper chromatography?
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Question 21 of 25
21. Question
Once the chromatogram is complete what should be measured?
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Question 22 of 25
22. Question
What should be used to measure the distance of spots formed?
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Question 23 of 25
23. Question
What does Rf stand for?
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Question 24 of 25
24. Question
What are Rf values?
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Question 25 of 25
25. Question
What is the equation to work out Rf values?
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