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This document provides a full set of exam-style questions for the "Amount of Substances" topic from the OCR A Chemistry Year 12 specification. Topic covered: Amount of Substances Content type: Exam-style questions only (no answers) OCR A-specific: Questions are written to match the official specification Covers key areas: Moles, molar mass, empirical formulas, reacting masses, gas volumes, and concentration calculations

This document contains a focused set of exam-style questions for the "Acids and Redox" topic from the OCR A Chemistry Year 12 course. Topic covered: Acids and Redox Content type: Exam-style questions only Aligned to OCR A specification: Based directly on the official curriculum High exam relevance: Based on common teacher test materials and past paper trends

This document contains a full set of exam-style questions specifically for the "Electrons and Bonding" topic from the OCR A Chemistry Year 12 specification. Topic covered: Electrons and Bonding Content type: Exam-style questions only Exam-board specific: Tailored to the OCR A specification Based on real exam trends: Focused on what teachers are likely to test

This document contains a full set of OCR A-Level Chemistry (Year 12) exam-style questions for Topic 1: Atoms, Ions & Compounds — the first topic in the OCR A specification. Topic covered: Atoms, Ions & Compounds (OCR Chemistry A, Year 12) Content type: Exam-style questions Spec-specific: All questions are tailored to match the OCR A specification