A concise, exam-focused guide to understanding reversible reactions and dynamic equilibrium. Covers key ideas such as the ⇌ symbol, how equilibrium is established in a closed system, and how to predict shifts using Le Chatelier’s Principle. Includes clear notes on the effects of concentration, temperature, and pressure, plus the role of catalysts and equilibrium constants. Ideal for quick revision and mastering core concepts efficiently.

This document provides a step-by-step guide on how to effectively answer 6-mark questions in GCSE AQA Chemistry. It outlines a structured approach using the Point → Explain → Link (PEL) method, tips for achieving top marks, and a real example to demonstrate the process. Ideal for students aiming to improve their exam technique and maximize marks in longer-answer questions.