Introduction to Enthalpy of Reaction

This study guide covers enthalpy and energy in chemical reactions. Key concepts include: defining enthalpy (H) and enthalpy change (ΔH), distinguishing between exothermic and endothermic reactions, understanding the relationship between ΔH, heat (q), and work (w), and internal energy (E or U). The guide also provides practice questions and exam tips for the AP Chemistry exam.