Filtration, crystallisation and chromatography (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
12 cards from this deck
Separation methods
Separation methods
Physical processes to separate mixtures, no chemical reactions
What filtration separates
What filtration separates
Insoluble solids from liquids
Filtrate
Filtrate
The liquid passing through filter paper
What crystallisation produces
What crystallisation produces
Solid crystals from a solution
Key to good crystallisation
Key to good crystallisation
Slow, controlled evaporation
What paper chromatography separates
What paper chromatography separates
Different coloured substances in mixtures
Why use pencil for baseline in chromatography
Why use pencil for baseline in chromatography
Pen ink would dissolve and interfere with results
How chromatography separates
How chromatography separates
Different substances travel at different speeds
Pure substances in chromatography
Pure substances in chromatography
Only one spot that doesn't separate
Mixed substances in chromatography
Mixed substances in chromatography
Spot separates into different colours
Physical vs chemical processes
Physical vs chemical processes
Physical doesn't create new substances, just separates
What gets trapped during filtration
What gets trapped during filtration
Insoluble solids in the filter paper