Every section of Physical Sciences, with exam-style question sets and worked answers on each page — 74 sets in 15 sections, 370 questions in the app.
- Doppler effect 4 sets · 28 marks · Paper 1Moving source — wavelength graph · Doppler shift & spectra · Moving source — graph of detected frequency vs speed · Red & blue shift
- Electric circuits 4 sets · 45 marks · Paper 1Rated bulbs in parallel branches & internal resistance · Electrical energy, power & units · emf and internal resistance from two operating conditions · Series–parallel circuits & switching
- Electrodynamics 4 sets · 32 marks · Paper 1AC generator: graph, rms & average power · Motors & generators · AC generator — cost of operation and doubled rotation speed
- Electrostatics 4 sets · 33 marks · Paper 1Electric field & Coulomb's law on a line · Coulomb's law & equilibrium · Field of a sphere; net force and friction on a bench · Coulomb's law: force balance on a line
- Momentum & impulse 5 sets · 29 marks · Paper 1Spring separation & energy on a ramp · Momentum–kinetic energy relationship · Impulse & change in momentum · Momentum vs contact time graph (hockey) · Momentum ratios (p = mv)
- Newton's laws & gravitation 4 sets · 36 marks · Paper 1Friction & two-body pulley systems · Equilibrium & Newton's first law · Force at an angle & maximum static friction · Net force & acceleration
- Photoelectric effect & spectra 4 sets · 34 marks · Paper 1Multi-colour photoemission & line spectra · Photoelectric effect · Metals compared at one fixed frequency · Einstein's photoelectric equation & graphs
- Vertical projectile motion 4 sets · 35 marks · Paper 1Two objects launched at different times · Graphs of motion · Throw from a roof with velocity table & bounce · Object released from a moving carrier
- Work, energy & power 5 sets · 31 marks · Paper 1Work-energy theorem: force at an angle · Work–energy theorem (qualitative) · Frictionless push then down a rough ramp · Power & mechanical energy at constant velocity · Net work & the work–energy theorem
- Acids & bases 6 sets · 42 marks · Paper 2Titration of a hydrated carbonate · Ka and weak-acid strength · Hydrolysis & equivalence point · Polyprotic acids & pH of a strong base · Reactions of acids · pH & acid/base strength
- Chemical equilibrium 5 sets · 42 marks · Paper 2Concentration–time graphs & Kc · Stoichiometry at equilibrium · Le Chatelier's principle & yield · Saturated solution, Kc–temperature table & mass from Kc · Rate–time graphs & disturbances
- Electrochemistry 8 sets · 58 marks · Paper 2Redox of zinc with dilute acid; Ni–Ag cell · Spontaneity of a strip-in-solution reaction; Mg–Ag cell · Galvanic cells · Electrolytic cells & electroplating · Galvanic cell: Zn–Cu · Electrolytic cell: refining silver
- Organic chemistry 8 sets · 65 marks · Paper 2Nomenclature, functional groups & isomers · Physical properties & intermolecular forces · Intermolecular forces · General formulas of homologous series · IUPAC naming & isomers · Functional isomers & boiling points · Functional groups · Isomers & homologous series
- Organic reactions 4 sets · 39 marks · Paper 2Cracking, substitution, addition & elimination · Dehydration & hydrogenation · Addition, elimination & substitution flow · Reaction conditions & catalysts
- Reaction rate & energy 5 sets · 41 marks · Paper 2Factors affecting rate & Maxwell–Boltzmann · Energy profile: ΔH and Eₐ · Rate from concentration–time data; Maxwell–Boltzmann · Factors affecting reaction rate · Activation energy & energy profiles