What is Paper 3 in A-level Chemistry? AQA – 2 hrs, 90 marks, 30% OCR A – 1 hr 30, 70 marks, 26% Edexcel – 2 hrs 30, 120 marks, 40% Covers everything: theory practical data. 5 key tips for every exam board: 1. Think practical — every topic links to a method. (e.g. Kc? That’s a titration first.) 2. Expect unfamiliar setups — new reactions, graphs, investigations. Don’t panic. Ask: what topic is this really testing? 3. Know how to plan experiments — Start with variables → method → improvements. 4.

AP Chemistry Classroom Setup and Study Guide