Leaving Cert Chemistry 2015

The 2015 Leaving Cert Chemistry exam paper and official marking scheme, free below as direct PDF links from the State Examinations Commission archive.

Higher Level

Exam PaperMarking Scheme
What's in the 2015 Higher Level paper?
  • Q1 volumetric analysis, iodine-thiosulfate, titration, concentration calculation · 50 marks
  • Q2 organic oxidation, recrystallisation, oxidation number, yield calculation · 50 marks
  • Q3 water analysis, hardness, free chlorine, suspended solids · 50 marks
  • Q4 short-answer, atomic structure, bonding, mole calculations · 50 marks
  • Q5 atomic structure, cathode rays, energy levels, electron configuration · 50 marks
  • Q6 oil refining, octane number, heat of reaction, hydrogen fuel · 50 marks
  • Q7 catalysis, rates of reaction, surface adsorption, activation energy · 50 marks
  • Q8 organic reactions, isomers, intermolecular forces, boiling points · 50 marks
  • Q9 acids and bases, ph, titration curve, indicators · 50 marks
  • Q10 unsaturation, benzene structure, electrolysis, mole calculations · 50 marks
  • Q11 electronegativity, periodic table, chemical equilibrium, greenhouse effect · 50 marks

Ordinary Level

Exam PaperMarking Scheme
What's in the 2015 Ordinary Level paper?
  • Q1 steam distillation, separation, organic extraction, experimental · 50 marks
  • Q2 volumetric analysis, acid-base titration, concentration calculation, experimental · 50 marks
  • Q3 water analysis, flame tests, nitrate test, suspended and dissolved solids · 50 marks
  • Q4 short answer, periodic table, atomic theory, covalent bonding, greenhouse gases · 50 marks
  • Q5 ions, ionic bonding, electron configuration, electronegativity, atomic radius · 50 marks
  • Q6 hydrocarbons, iupac nomenclature, combustion, aromatic compounds, octane number · 50 marks
  • Q7 acids and bases, ph, water treatment, chlorination · 50 marks
  • Q8 organic reactions, alkenes, unsaturation, oxidation, alcohols · 50 marks
  • Q9 rates of reaction, graphing, factors affecting rate, experimental · 50 marks
  • Q10 isotopes, radioactivity, thermochemistry, the mole · 50 marks
  • Q11 redox, chemical equilibrium, haber process, industrial chemistry · 50 marks

Revise Chemistry by topic

Atomic Theory & the Periodic TableChemical Bonding & Molecular ShapeOxidation–Reduction & ElectrochemistryStoichiometry, the Mole, Formulas & EquationsVolumetric Analysis (Titrations)Acids, Bases & pHRates of ReactionChemical EquilibriumThermochemistry (Energetics)Organic Chemistry, Hydrocarbons & FuelsWater, Environmental & Atmospheric ChemistryIndustrial ChemistryLaboratory Skills & Techniques
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Questions come from the official State Examinations Commission papers. Every link opens the original PDF on examinations.ie.