Pearson Edexcel GCSE Chemistry Paper 1f 2025 Mark Scheme

Download the official Pearson Edexcel GCSE (9–1) Chemistry Paper 1 Foundation Tier mark scheme from the Summer 2025 examination series (1CH0/1F). This official examiner mark scheme contains complete marking guidance, accepted answers, calculation methods, practical-method explanations, level-based descriptors, and examiner-approved responses used during the marking of the June 2025 Foundation Tier Chemistry examination.

The mark scheme includes detailed worked answers for Foundation Tier Chemistry topics including electrolysis, atomic structure, isotopes, filtration, chromatography, titration, fuels, reactivity series, rust prevention, atom economy, percentage yield, alloys, acids and alkalis, ionic compounds, hazard symbols, and practical Chemistry investigations.

Perfect for students revising for the 2026 GCSE Chemistry examinations, this resource helps learners understand how marks are awarded, improve exam technique, master Foundation Tier command words, and identify exactly what examiners expect in high-scoring responses. Ideal for independent revision, tutoring, intervention sessions, self-marking, classroom assessment, and mock-exam preparation.

This document is designed for Pearson Edexcel GCSE Chemistry Foundation Tier students preparing for the Summer 2026 examinations, Year 10 and Year 11 learners improving Chemistry performance, resit candidates, homeschooling students, and independent learners studying the Edexcel GCSE Chemistry specification.

It is also highly valuable for Chemistry teachers, science tutors, revision centres, intervention coordinators, and parents who want official examiner guidance for marking student responses, understanding Foundation Tier mark allocation, improving exam technique, and preparing students using authentic Pearson Edexcel examiner materials.