Heat flow and enthalpy change
Heat flow and enthalpy change

Thermochemistry studies the heat transferred during chemical change at constant pressure. The chemicals reacting are the system, while the cup, thermometer, air, and everything else are the surroundings.
Step-by-step lessons covering Eduqas A Level Chemistry Thermochemistry 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.