3 articles
Energy, Rates & Equilibrium
Thermochemistry, entropy, Gibbs energy, reaction kinetics and chemical equilibrium.
Exothermic vs. Endothermic Reactions: What's the Difference?
How exothermic and endothermic reactions differ, what enthalpy change (ΔH) means, energy diagrams, why bond breaking absorbs energy, and everyday examples of both.
Le Chatelier's Principle: How Equilibrium Responds to Change
What chemical equilibrium is, how Le Chatelier's principle predicts the effect of concentration, pressure and temperature changes, and how the Haber process uses it.
Reaction Rates and Catalysts: What Makes Reactions Faster?
Collision theory, the five factors that change reaction rate — temperature, concentration, surface area, pressure and catalysts — activation energy, and how enzymes and catalytic converters work.