1. Introduction. 2. Phase Changes in Pure Component Systems: Liquids and Gases. 3. Phase Changes in Pure Component Systems: Liquids and Solids. 4. Phase Changes in Pure Component Systems: Solid and Solid. 5. Vapour-Liquid Equilibrium at Low Pressure. 6. Vapour-Liquid Equilibrium at High Pressure. 7. Low Pressure Gas Solubility in Liquids. 8. Liquid-Liquid Equilibrium. 9. Condensed Phases of Organic Materials: Solid-Liquid and Solid-Solid Equilibrium. 10. Condensed Phases of Inorganic Materials: Metallic Systems. 11. Condensed Phases of Inorganic Materials: Ceramic Systems. 12. Condensed Phases of Inorganic Materials: Molten Salts. 13. Measurement of Limiting Activity Coefficients Using Non-Analytical Tools. 14. Measurement of Limiting Activity Coefficients Using Analytical Tools. 15. Measurement of Interfacial Tension. 16. Critical Parameters.