Pearson Edexcel GCSE Combined Science Paper 5 2025 Ms

Download the official Pearson Edexcel GCSE (9–1) Combined Science Paper 5 Chemistry Foundation Tier mark scheme from the Summer 2025 examination series (1SC0/2CF). This authentic examiner-issued Chemistry mark scheme contains official answers, accepted alternative responses, examiner guidance, calculation methods, 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 Foundation Tier 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 halogens, alkali metals, atmospheric gases, exothermic reactions, catalysts, concentration calculations, empirical formulas, crude oil, hydrocarbons, fractional distillation, combustion, lithium reactions with water, oxygen investigations using zinc, decomposition of hydrogen peroxide, and rates of reaction.

Extended-response questions include official indicative content and level-based descriptors explaining how students are assessed on crude-oil fractions, kerosene and fuel-oil properties, viscosity, boiling points, ease of ignition, fuel uses, and cracking hydrocarbons into shorter-chain molecules.

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.