Chemistry 9701 (Cambridge International AS & A Level)
Original practice questions with long-form, step-by-step worked solutions, organised by the 9701 syllabus strands. Everything here is free to read.
- Subject code
- 9701
- Tier
- AS & A2
- Topics
- 20
- Worked questions
- 200
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Official Cambridge references: 9701 syllabus ↗ · past papers ↗
Physical Chemistry
Atomic Structure
Describe the structure of the atom in terms of protons, neutrons and electrons; define isotopes and explain their identical chemical but differing physical…
Chemical Bonding
Explain ionic, covalent (including coordinate/dative) and metallic bonding in terms of electrostatic attraction, and use electronegativity differences to…
States of Matter
Apply the ideal gas equation pV = nRT to gas calculations, including finding a molar mass; relate the physical properties of a solid (melting point…
Chemical Energetics
Define and calculate standard enthalpy changes of reaction, formation, combustion and neutralisation from experimental data and from Hess's-law energy cycles…
Reaction Kinetics
Explain reaction rate using collision theory, the Boltzmann distribution and activation energy, and the action of homogeneous and heterogeneous catalysts…
Equilibria
Apply Le Chatelier's principle and write Kc/Kp expressions for reversible reactions at dynamic equilibrium; use the Brønsted-Lowry theory with Ka, pH and Kw…
Electrochemistry
Assign oxidation numbers and use them to balance redox equations; calculate the mass or volume of a substance liberated during electrolysis using Q = It and F…
Inorganic Chemistry
Periodicity
Describe and explain the periodic trends across Period 3 in atomic radius, melting point and electrical conductivity in terms of structure and bonding; write…
Group 2
Describe and explain the trends down Group 2, from magnesium to barium, in reactivity with oxygen, water and dilute acids and in the reactions of the oxides…
Group 17
Describe the trends in volatility, oxidising power and bond strength of the Group 17 elements and relate them to van der Waals' forces; explain the relative…
Transition Elements
Explain the characteristic properties of the first-row transition elements (variable oxidation states, catalytic activity, complex-ion formation and colour)…
Organic Chemistry
Introduction to Organic Chemistry
Interpret and name organic molecules, including aromatic compounds, from their general, structural, displayed and skeletal formulae; classify reactions as…
Hydrocarbons
Describe the free-radical substitution reactions of alkanes and the electrophilic addition reactions of alkenes with hydrogen, steam, hydrogen halides and…
Halogenoalkanes
Classify a halogenoalkane as primary, secondary or tertiary and describe its nucleophilic substitution (to an alcohol, nitrile or amine) and elimination…
Alcohols and Esters
Classify an alcohol as primary, secondary or tertiary and describe its oxidation to a carbonyl compound or carboxylic acid, dehydration to an alkene, and…
Carbonyl Compounds
Describe the preparation of aldehydes and ketones by oxidation of alcohols, their reduction back to alcohols, and their nucleophilic addition reaction with…
Carboxylic Acids and Derivatives
Describe the preparation of a carboxylic acid by oxidation or hydrolysis and its redox, neutralisation and esterification reactions; compare the relative…
Nitrogen Compounds
Describe the preparation and relative basicity of a primary aliphatic or aromatic amine, and the formation and hydrolysis of nitriles and amides; describe the…
Polymerisation
Deduce the repeat unit and monomer(s) of an addition polymer formed from an alkene, and of a condensation polymer, a polyester or a polyamide, formed from a…