IGCSE Chemistry: Complete Revision Notes

Key Topics Overview

IGCSE Chemistry (0620) is divided into physical, inorganic, and organic chemistry, plus experimental techniques. Use these revision notes alongside your textbook for final preparation.

Physical Chemistry

• States of matter: Particle theory, changes of state, diffusion

• Atomic structure: Protons, neutrons, electrons; electronic configuration; isotopes

• Chemical bonding: Ionic, covalent, and metallic bonding; properties related to structure

• Mole concept: Ar, Mr, molar mass; calculating reacting masses; concentration of solutions

• Energetics: Exothermic vs endothermic; activation energy; energy profile diagrams

• Kinetics: Factors affecting rate – temperature, concentration, surface area, catalyst

Inorganic Chemistry

• Periodic table trends: atomic radius, ionisation energy, electronegativity

• Group 1 (alkali metals): reactivity increases down the group

• Group 7 (halogens): reactivity decreases down the group; displacement reactions

• Transition metals: variable oxidation states, catalytic properties, coloured compounds