GCSE CHEMISTRY 8462/2F Paper 2 Foundation Tier Mark scheme June 2021 Version: 1.0 Final Mark Scheme

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tep 2: Determine a mark Once you have assigned a level you need to decide on the mark. The descriptors on how to allocate marks can help with this. The exemplar materials used during standardisatio... n will help. There will be an answer in the standardising materials which will correspond with each level of the mark scheme. This answer will have been awarded a mark by the Lead Examiner. You can compare the student’s answer with the example to determine if it is the same standard, better or worse than the example. You can then use this to allocate a mark for the answer based on the Lead Examiner’s mark on the example. You may well need to read back through the answer as you apply the mark scheme to clarify points and assure yourself that the level and the mark are appropriate. Indicative content in the mark scheme is provided as a guide for examiners. It is not intended to be exhaustive and you must credit other valid points. Students do not have to cover all of the points mentioned in the indicative content to reach the highest level of the mark scheme. You should ignore any irrelevant points made. However, full marks can be awarded only if there are no incorrect statements that contradict a correct response. An answer which contains nothing of relevance to the question must be awarded no marks.MARK SCHEME – GCSE CHEMISTRY – 8462/2F – JUNE 2021 7 Question 1 Question Answers Extra information Mark AO / Spec. Ref. 01.1 4.6 billion years ago 1 AO1 4.9.1.2 Question Answers Extra information Mark AO / Spec. Ref. 01.2 0.92 (%) 1 AO2 4.9.1.1 Question Answers Extra information Mark AO / Spec. Ref. 01.3 do not accept more than one line from a box on the left 1 1 AO1 AO2 4.9.1.1 4.9.1.3 Question Answers Extra information Mark AO / Spec. Ref. 01.4 carbon dioxide dissolving in sea water formation of sedimentary rocks 1 1 AO1 4.9.1.2 4.9.1.4 Question Answers Extra information Mark AO / Spec. Ref. 01.5 carbon dioxide (+ water → ) (→ glucose +) oxygen allow CO2 allow O2 1 1 AO1 4.9.1.3MARK SCHEME – GCSE CHEMISTRY – 8462/2F – JUNE 2021 8 Question 1 continued Question Answers Extra information Mark AO / Spec. Ref. 01.6 evidence / proof 1 AO1 4.9.1.2 Total 9 [Show More]

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