Combined Science GCSE
filtration
What filtration means in Combined Science GCSE, as defined for AQA.
Definitions of filtration
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Reference: AQA
Separating an insoluble solid from a liquid using filter paper and a funnel, naming the solid as the residue and the liquid as the filtrate.
Passing water through filter beds of sand and gravel to remove insoluble particles such as grit and plant material.
Passing water through filter beds removes insoluble particles such as grit, soil and small pieces of debris.
Separates unreacted excess solid from the salt solution, collecting the salt solution as the filtrate.
Topics that use filtration
- Mixtures (AQA GCSE)
- Potable water (AQA GCSE)
- Soluble salts (AQA GCSE)
Related terms
- Crystallisation
- Aquifers
- Chlorine
- Chromatography
- Control variables
- Desalination
- dissolved solids
- Distillation
Using filtration in the exam
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