Form 4 mole concept notes with relative masses, Avogadro constant, molar calculations, empirical formulae, concentration, gas volume and stoichiometry.

Transition metals chemistry notes covering variable oxidation states, coloured compounds, complex ions, catalytic activity and reactions of iron and copper.

Form 4 electrochemistry notes explaining electrolytes, electrodes, electrolysis, preferential discharge, copper refining, electroplating and Faraday laws.

Study Group VII halogens chemistry notes covering trends, displacement reactions, chlorine preparation, bleaching, hydrogen chloride and halide tests.

Complete Group IV elements chemistry notes covering carbon, silicon, germanium, tin and lead, allotropy, trends, oxidation states, oxides, chlorides and uses.

Comprehensive guide to Group I and Group II elements. Learn about alkali metals and alkaline earth metals, their properties, trends, reactions, and industrial applications.

Master periodic trends including atomic radius, ionisation energy, electron affinity, and electronegativity. Learn why these properties change across periods and down groups.

Journey through the history of the periodic table from Döbereiner’s triads to Mendeleev’s genius predictions and Moseley’s atomic number breakthrough. Understand how science evolved.

Master solubility equilibria and Ksp. Learn how to calculate solubility from Ksp, predict precipitation, and understand the common ion effect with worked examples.

Master buffer solutions with this comprehensive guide. Learn how buffers work, calculate pH using Henderson-Hasselbalch equation, and understand buffer capacity and applications.