Edexcel IGCSEChemistryGeneral Applications6 Marks
The diagram in Figure 1 shows the apparatus used to separate a mixture of sand and salt solution.
- (a)State the name of the process shown in Figure 1 that separates the sand from the salt solution.[1]
- (b)(i)Name the substance that collects in the beaker after this process.[1]
- (b)(ii)Describe how to obtain pure solid salt from the solution collected in the beaker.[3]
- (c)Suggest why this method would not be suitable for separating ethanol from water.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme. The mark or mark type is shown in brackets.
- M2(a) B1 for filtration
- M2(b)(i) B1 for salt solution / filtrate
- M2(b)(ii) M1 for heat / evaporate water / boil
- M1 for to dryness / until crystals appear / crystallise
- A1 for allow to cool / leave to dry
- M2(c) B1 for ethanol and water are miscible / form a solution / have similar boiling points
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