Pearson Edexcel GCSE Combined Science 2025 Paper 2 Ms

Download the official Pearson Edexcel GCSE (9–1) Combined Science Paper 2 Chemistry Foundation Tier mark scheme from the Summer 2025 examination series (1SC0/1CF). This authentic examiner-issued Chemistry mark scheme contains official answers, accepted alternative responses, calculation methods, examiner guidance, practical-investigation marking criteria, indicative content, and level-based descriptors used by Pearson Edexcel examiners during the marking of the June 2025 GCSE Combined Science Chemistry examination.

This Foundation Tier Chemistry mark scheme is ideal for students preparing for the 2026 GCSE Combined Science examinations, teachers conducting mock assessments, tutors improving exam technique, intervention programmes, homeschooling learners, and independent students who want to understand exactly how marks are awarded in Pearson Edexcel Chemistry papers.

The mark scheme includes detailed examiner guidance for Chemistry topics including thermal decomposition of zinc carbonate, limewater tests for carbon dioxide, chromatography and Rf calculations, fractional distillation, the reactivity series, metals reacting with acids, relative formula mass calculations, extraction of metals, reduction and oxidation, concentration calculations, electronic configuration, periodic-table structure, ionic compounds, precipitation reactions, conductivity, and hazard symbols.

Extended-response questions include official indicative content and level-based descriptors explaining how students are assessed on periodic-table structure, electronic configuration, electron shells, group numbers, and period numbers using scientific explanations and examples of electronic configurations.

This official Pearson Edexcel GCSE Combined Science Foundation Tier Chemistry mark scheme is designed for Year 10 and Year 11 students preparing for Summer 2026 GCSE examinations, Foundation Tier Combined Science learners improving Chemistry exam performance, GCSE resit candidates, and independent learners studying the Pearson Edexcel Combined Science specification.

It is also highly valuable for Chemistry teachers, science departments, tutors, revision academies, intervention coordinators, homeschooling parents, and classroom assessors who require examiner-standard answers, accepted alternative responses, official mark allocation criteria, and authentic Pearson Edexcel assessment guidance.