OCR As Level Chemistry B Paper 1 2025 Question Paper

Get the official OCR AS Level Chemistry B (Salters) H033/01 Foundations of Chemistry June 2025 question paper used in the Summer 2025 OCR examination series. This authentic examiner-issued PDF contains physical chemistry, organic chemistry, energetics, electrolysis, halogen chemistry, polymers, spectroscopy, intermolecular forces, combustion, equilibrium, and analytical-chemistry questions exactly as presented to candidates during the live OCR assessment.

This paper includes exam questions on atomic structure and periodic trends, dehydration of ethanol, nucleophilic substitution of haloalkanes, neutralisation calculations, intermolecular bonding, benzene and arenes, oxidation and esterification reactions, silver halide precipitation, combustion enthalpy calculations, mass spectrometry, electrophilic aromatic substitution, recrystallisation techniques, free-radical substitution mechanisms, ozone depletion by haloalkanes, ideal gas equation calculations, electrolysis of sodium iodide, halogen displacement reactions, iodine manufacture using iodate ions, oxidation-state changes, and equilibrium-related practical chemistry. Candidates are required to complete advanced calculations, draw labelled electrolysis apparatus, analyse combustion-energy data, explain intermolecular-force trends, interpret reaction mechanisms, balance ionic equations, evaluate practical methods, and explain environmental chemistry processes. Pair it with the matching OCR H033/01 June 2025 mark scheme on markscheme.net for complete examiner-style revision and exam preparation. Updated for the 2025/2026 academic year, mobile-friendly, and instantly downloadable from markscheme.net.

This document is designed for OCR AS Level Chemistry B (Salters) students preparing for the 2026 examination series, Year 12 learners studying Foundations of Chemistry, retake students targeting A/A grades, and home-schooled candidates seeking authentic OCR exam practice under timed conditions.

It is also ideal for teachers, private tutors, revision-course providers, and parents supporting Chemistry revision at home. The question paper can be used for mock examinations, combustion-enthalpy calculations, electrolysis revision, organic-mechanism practice, recrystallisation-method analysis, and OCR exam-technique development.