What entropy measures
What entropy measures
Entropy, SSS, measures the freedom of particles in a system and the number of ways particles and energy can be arranged. At this level, it is better to think about particle freedom than to rely on the vague word "disorder".
Step-by-step lessons covering Eduqas A Level Chemistry Entropy and feasibility of reactions for A Level Chemistry. Each lesson works through exam-style questions in Component 1, Component 2 and Component 3 format. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.