HARD
Upper Secondary: IGCSE
IMPORTANT
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Why are condenser called that? What is the cold water for?

Important Questions on Separating Substances

HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 3
You would not use exactly the same apparatus you used to separate pure water from seawater to separate ethanol and water. Why not?
HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 4
Explain how fractional distillation works.
HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 5

In the given chromatogram, how can you tell that 'X' does not contain the substance 'C'?

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MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 6

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Look at the chromatogram above. Can you think of a way to separate the coloured substances from the paper?

 

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 1
Explain in your own words how paper chromatography works.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 2
What do you think a locating agent is? 
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 2
Which chemical you will need, in an experiment to separate amino acids by chromatography?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 3
What makes Rfvalues so useful?