MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Describe how you would crystallise potassium nitrate from its aqueous solution. 

Important Questions on Separating Substances

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 4
How would you separate salt and sugar? Mention any special safety precautions you would take. 
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 5
Now see if you can think of a way to get clean sand from a mixture of sand and little bits of iron wire.
HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 1
How would you obtain pure water from seawater? Draw the apparatus, and explain how the method works.
HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 2 - Separating Substances>Q>Q 2
Why are condenser called that? What is the cold water for?
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?