Leaving Cert Chemistry 2023

The 2023 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 2023 Higher Level paper?
  • Q1 volumetric analysis, standard solution, redox titration · 50 marks
  • Q2 ethyne preparation, organic reactions, combustion · 50 marks
  • Q3 thermochemistry, heat of neutralisation, calorimetry · 50 marks
  • Q4 short questions, general chemistry · 50 marks
  • Q5 atomic structure, electronegativity, electron configuration · 50 marks
  • Q6 hydrocarbons, isomerism, thermochemistry · 50 marks
  • Q7 acids and bases, ph, water treatment · 50 marks
  • Q8 organic reactions, polymers, boiling points · 50 marks
  • Q9 chemical equilibrium, le chateliers principle, kc · 50 marks
  • Q10 aromatic chemistry, stoichiometry, radioactivity · 50 marks
  • Q11 gas laws, electrolysis, reaction kinetics · 50 marks

Ordinary Level

Exam PaperMarking Scheme
What's in the 2023 Ordinary Level paper?
  • Q1 organic chemistry, hydrocarbons, ethyne · 50 marks
  • Q2 titration, volumetric analysis, stoichiometry · 50 marks
  • Q3 water analysis, ion tests, environmental chemistry · 50 marks
  • Q4 general chemistry, bonding, thermochemistry · 50 marks
  • Q5 periodic table, atomic structure, atomic radius · 50 marks
  • Q6 organic chemistry, hydrocarbons, fuels · 50 marks
  • Q7 acids and bases, neutralisation, ph calculations · 50 marks
  • Q8 organic chemistry, alcohols, reaction pathways · 50 marks
  • Q9 rates of reaction, graphs, surface area · 50 marks
  • Q10 ionic bonding, redox reactions, stoichiometry · 50 marks
  • Q11 water treatment, equilibrium, fractional distillation · 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.