25 GCSE Maths questions on calculations. Covers BODMAS, negative numbers, and decimals with Foundation to Higher Tier difficulty. Answers included.

Acids, Bases, Acid–base equilibrium explains pH, strong/weak acids, hydrolysis, water ionisation, and how equilibrium shifts affect acidity and alkalinity in solutions.

Aligned GCSE resource: VSEPR, shapes, bond angles, lone pairs, polarity. Includes 20 graded quizzes with answers and teacher notes. Includes printable PDF.

Pressure, Volume, Temperature, Gas, Particles, Collisions, Boyle’s Law, Charles’s Law, Combined Gas Law, Kelvin, Absolute Zero, Compression, Expansion, Container, Energy

Covalent bonding involves atoms sharing electron pairs so valence shells achieve an octet; Lewis structures show bonding pairs and lone pairs. Double bond.

Quantum energy levels in atoms explain how electrons occupy discrete shells. Transitions between levels emit or absorb photons, producing spectra. Photoelectron data confirm quantisation.

Atom, Proton, Neutron, Electron, Nucleus, Isotope, Atomic_Number, Mass_Number, Shell, Valence, Orbital, Ionisation Energy, Spectrum, Quantum, Photon, Bohr Model, Ar, Charge

Relative atomic mass, relative formula mass, empirical formula, molecular formula, mole, Avogadro constant, percentage composition, mass ratios, atom ratios, carbon-12 standard, combining volumes, Avogadro hypothesis, quantitative chemistry, GCSE calculations, formula determination, mole concept, simplest whole-number ratio, particle counting, mass-to-mole conversion, chemical identity

GCSE Chemistry Atomic Molecular Theory lesson pack (AQA Trilogy Higher): Report, Slides, Infographics and Quizzes covering Law of Conservation of Mass, Law of Definite Proportions, Multiple Mass Ratios, Elements and Compounds.