Use of important natural constants and measures, stoichiometry, gas laws. Chemical equilibrium, potential (mechanical, electrical, and chemical) as the driving force of physical and chemical transformations (chemical equilibrium, solubility product, redox reactions), simple examples of phase equilibria and transitions. Acids and bases: Brönsted acids and bases, pH calculations, Lewis acids and bases. Structure and trends of the periodic table: atomic, ionic and covalent radii, ionisation potentials, electron affinity, electronegativity, oxidation number. Introduction to chemical bonds: covalent, ionic, metallic, coordinative and transitions between these. Polar bonds, hydrogen bonds. Molecule orbital (MO) theory with simple examples. Simple kinetics and thermodynamics of chemical reactions.