25 past paper questions on organic molecules from Gauteng, KwaZulu-Natal, Mpumalanga and other papers, 2025–2026. Read what each one asks, then open it with its memo.
14 questions on organic molecules. Each opens in the question browser with its memo.
Identify functional groups and IUPAC names of a primary alcohol and its derivatives through a series of substitution and addition reactions. Write structural formulae and explain reaction mechanisms.
Analyze a multi-step organic synthesis starting from 1-bromobutane involving substitution, addition, and esterification reactions. Identify reaction types, conditions, structural formulae, and IUPAC names of products.
Examine intermolecular forces in methanol molecules and explain boiling point trends for alcohols and carboxylic acids based on molecular structure and hydrogen bonding strength.
Define homologous series, identify functional and positional isomers among organic compounds, write IUPAC names of esters, and determine general formulae of homologous series.
Classify organic compounds by homologous series and functional groups. Determine IUPAC names, general formulae, identify unsaturated hydrocarbons, and write combustion equations using molecular formulae.
Draw structural formulae from a thermal cracking equation, then analyze haloalkane transformations involving elimination and substitution reactions. Write reaction conditions and structural equations.
Graph boiling points of primary straight-chain alcohols against carbon number, identify the least flammable compound, and explain boiling point trends using intermolecular forces and vapour pressure relationships.
Analyze propene reactions in a flow diagram showing addition of hydrogen halide and hydration. Identify product structures, IUPAC names, reaction types, and necessary reaction conditions.
Identify organic compounds from structures and classify them by type (ester, haloalkane, alcohol). Determine whether alcohols are primary, secondary, or tertiary, and write IUPAC names and structural formulae.
Interpret a vapour pressure-temperature graph for five-carbon isomers from different homologous series (alkanes, alcohols, aldehydes, carboxylic acids). Identify boiling points and explain intermolecular force differences.
Classify a haloalkane as primary, secondary, or tertiary. Write IUPAC names of organic compounds, identify organic acids used in ester synthesis, draw structural formulae, and calculate oxygen composition percentages.
Complete organic reaction equations showing elimination of 2-bromopropane, hydration of the resulting alkene, and esterification to form propyl propanoate. Identify reaction types, conditions, and inorganic products.
Classify organic compounds as primary, secondary, or tertiary alcohols. Identify ketones and hydrocarbons by structure, determine functional isomers, positional isomers, and write IUPAC names.
Analyze an alkene reaction flow diagram showing addition reactions (hydration, hydrogenation, halogenation). Identify structural formulae of products, reaction types, conditions, and IUPAC nomenclature.
11 exam pages where organic molecules appears alongside other topics — multiple-choice pages, and pages where one question ends and the next begins. Listed in full so nothing is hidden.
Multiple-choice page covering classification of organic compounds into homologous series using molecular formula, comparing vapour pressure trends of alcohols and carboxylic acids, and identifying thermal cracking reactions.
Multiple-choice page covering thermal cracking of alkanes, identifying positional isomers of alkenes, and applying IUPAC nomenclature rules to branched and unsaturated hydrocarbons.
Two-question page covering esterification of propan-1-ol with ethanoic acid (write ester structures, IUPAC names, and calculate percentage purity) and explain boiling point trends of alcohols and carboxylic acids using intermolecular forces.
Multiple-choice page on positional isomers of alkenes, vapour pressure ordering of alcohols and carboxylic acids, and determining whether compounds are carboxylic acids or esters from molecular formula and chemical reactivity.
Multiple-choice questions identifying maximum height after a ball's second bounce on a position-time graph, and distinguishing functional isomers and vapor pressure in organic chemistry.
Multiple-choice page covering momentum and rebound velocity of a ball striking a wall, and organic chemistry topics including homologous series and functional isomers.
Two-question page covering combustion calculations (determining mass of hydrocarbon from carbon dioxide produced) and analyzing boiling point trends of aldehydes with independent and dependent variables.
Multiple-choice and structured questions covering organic compound reactivity with bromine water, identification of structural isomers, and application of Newton's law of gravitation to planetary orbital motion.
Multiple-choice page on saturated hydrocarbons identified by molecular formula, esterification reactants and products, hydrohalogenation of alkenes, and IUPAC nomenclature of halogenated organic compounds.
Multiple-choice page on organic reaction classification: identifying whether an alkene-HBr reaction is addition or substitution and determining the major product via Markovnikov's rule; and recognizing which factors change the area under a Maxwell-Boltzmann distribution.
Two-question page covering esterification of propanol with propanoic acid (identify catalyst type and draw product structures) and analyzing vapour pressure data to explain effects of molecular mass and functional group type.
Carry on through the Grade 12 curriculum.
Rate of Reaction past paper questionsDescriptions last updated 6 August 2026.