Physical Chemistry: Mole concept, stoichiometry limits, first/second laws of thermodynamics, and equilibrium constant formulas ((K_{p}), (K_{c}), pH calculations).Inorganic Chemistry: Periodic property trends (ionization energy, electronegativity), VSEPR shapes, and hybridization rules.Organic Chemistry: IUPAC nomenclature rules, inductive/resonance effects, isomerism types, and basic hydrocarbon reaction mechanisms.