Filtration, crystallisation and chromatography (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of processes are used in separation methods?
What type of processes are used in separation methods?
Physical processes
What does filtration separate from liquids?
What does filtration separate from liquids?
Insoluble solids
What is the liquid called that passes through the filter paper?
What is the liquid called that passes through the filter paper?
The filtrate
Where do insoluble solids end up during filtration?
Where do insoluble solids end up during filtration?
Trapped in the filter paper
What is crystallisation used for?
What is crystallisation used for?
Getting solid crystals from solution
What happens to water during crystallisation?
What happens to water during crystallisation?
It evaporates away
Why is slow evaporation important in crystallisation?
Why is slow evaporation important in crystallisation?
To get nice clear crystals
What does paper chromatography separate?
What does paper chromatography separate?
Different coloured substances
Why must you use pencil, not pen, for the baseline in chromatography?
Why must you use pencil, not pen, for the baseline in chromatography?
Pen ink would dissolve and interfere
What does it mean if a spot separates into different colours in chromatography?
What does it mean if a spot separates into different colours in chromatography?
It was a mixture
How do pure substances behave in chromatography?
How do pure substances behave in chromatography?
Create one spot that doesn't separate
Why do different substances separate in chromatography?
Why do different substances separate in chromatography?
They travel at different speeds