Leaving Cert Chemistry 2020

The 2020 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 2020 Higher Level paper?
  • Q1 volumetric analysis, water of crystallisation, titration, primary standard · 50 marks
  • Q2 organic synthesis, oxidation, recrystallisation, yield calculation · 50 marks
  • Q3 rates of reaction, effect of temperature, graphing, collision theory · 50 marks
  • Q4 short-answer, atomic structure, bonding, gas laws · 50 marks
  • Q5 atomic structure, energy levels, emission spectrum, electron configuration · 50 marks
  • Q6 oil refining, hydrocarbons, octane number, heat of formation · 50 marks
  • Q7 acids and bases, conjugate pairs, ph calculation, indicators · 50 marks
  • Q8 organic reactions, reaction mechanisms, polymers, solubility · 50 marks
  • Q9 chemical equilibrium, equilibrium constant, le chatelier, dynamic equilibrium · 50 marks
  • Q10 sewage treatment, oxidation numbers, redox, mole calculations · 50 marks
  • Q11 hydrogen bonding, electronegativity, empirical formula, corrosion · 50 marks

Ordinary Level

Exam PaperMarking Scheme
What's in the 2020 Ordinary Level paper?
  • Q1 organic chemistry, unsaturation, combustion test, recrystallisation · 50 marks
  • Q2 volumetric analysis, acid-base titration, concentration calculation, experimental · 50 marks
  • Q3 rates of reaction, catalysts, hydrogen peroxide, graphing · 50 marks
  • Q4 short answer, periodic table, flame tests, electrolysis, chromatography · 50 marks
  • Q5 atomic structure, isotopes, radioactivity, relative atomic mass · 50 marks
  • Q6 fuels, combustion, alkanes, molecular structure · 50 marks
  • Q7 acids and bases, ph, hard water, water treatment · 50 marks
  • Q8 organic chemistry, alcohols, carboxylic acids, dehydration · 50 marks
  • Q9 electron configuration, oxidation and reduction, ionic substances, reactivity · 50 marks
  • Q10 water treatment, states of matter, gas laws, moles and stoichiometry · 50 marks
  • Q11 covalent bonding, electronegativity, chemical equilibrium, crystal structure · 50 marks
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