AQA GCSE Chemistry potable water question, answer and mark

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AQAGCSEChemistryFoundation1 mark

GCSE revision question

Question context

Potable water can be produced from fresh water sources by filtration and sterilisation, or from sea water by desalination. Desalination is more expensive due to the energy required to remove salt.

State one method used to produce potable water from fresh water.

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Answer and mark-scheme guidance

MP1: Filtration

Mentor — AI Tutor

Can you give the exact method the mark scheme wants here?

This is a 1-mark question, so the key is precision. The mark scheme gives one accepted method used to produce potable water from fresh water: filtration. To secure the mark, your answer needs to state that method clearly.

Quick takeaway: For this question, the mark is earned by stating: filtration.

Potable water from fresh water: what does this question test?

This GCSE Chemistry exam question is testing whether you can identify a method used to produce potable water from fresh water in AQA GCSE Chemistry revision. Because it is only worth 1 mark, there is no need for a long explanation — you need the exact mark-scheme point. Use this kind of GCSE revision question to sharpen recall for Unit 10 Using resources GCSE revision and using the Earth’s resources and sustainable development GCSE questions. With AI Marker, you can practise GCSE Chemistry exam questions, get GCSE

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