AP CHEMISTRYReaction Energy Diagrams
Visualize reaction energy diagrams that plot potential energy versus reaction progress. Identify reactants, products, transition states, activation energy (Ea), and enthalpy change (ΔH). Understand how exothermic reactions release energy (ΔH < 0) while endothermic reactions absorb energy (ΔH > 0), and how catalysts lower activation energy without changing ΔH, thereby increasing reaction rate.