Surface Chemistry

20 lessons, pages 2221–2240.

  1. Interfaces and Surface Energy — Why exposed particles behave differently from bulk particles
  2. Adsorption and Absorption — Distinguishing surface accumulation from bulk uptake
  3. Physisorption and Chemisorption — Intermolecular attraction versus surface chemical bonding
  4. Gas Adsorption Factors — Effects of pressure, temperature and adsorbent area
  5. Langmuir Adsorption Isotherm — Monolayer site coverage and its assumptions
  6. Freundlich Adsorption Isotherm — Empirical coverage trends on heterogeneous surfaces
  7. Heterogeneous Catalysis — Adsorption, surface reaction and product desorption
  8. Catalyst Selectivity and Poisoning — Active sites, competing pathways and deactivation
  9. Enzyme Catalysis — Substrate binding, transition-state stabilization and conditions
  10. Colloidal Dispersions — Particle size, dispersed phase and dispersion medium
  11. Lyophilic and Lyophobic Sols — Solvent affinity, stability and reversibility
  12. Preparing Colloids — Dispersion and condensation routes to colloidal particles
  13. Purifying Colloids — Dialysis, electrodialysis and ultrafiltration
  14. Tyndall Effect and Brownian Motion — Light scattering and thermal particle motion
  15. Charge and Stability of Colloids — Electrical double layers, zeta potential and repulsion
  16. Coagulation of Colloids — Electrolyte-induced aggregation and ion valence
  17. Emulsions and Emulsifiers — Stabilizing droplets of immiscible liquids
  18. Micelles and Critical Micelle Concentration — Surfactant self-assembly and solubilization
  19. Gels, Foams and Aerosols — Dispersed-phase geometry and everyday material behavior
  20. Surface Chemistry: Unit Review — Connecting adsorption, catalysis and colloidal stability