# Leaving Cert Chemistry 2026

> The 2026 Leaving Cert Chemistry exam paper and official marking scheme for Higher and Ordinary level. Questions come from the official State Examinations Commission papers; every PDF link opens the original on examinations.ie.

Canonical: https://examai.ie/past-papers/leaving-cert/chemistry/2026

## Higher Level

- [Exam Paper](https://www.examinations.ie/archive/exampapers/2026/LC022ALP000EV.pdf)
- [Marking Scheme](https://www.examinations.ie/archive/markingschemes/2026/LC022ALP000EV.pdf)

### What's in the 2026 Higher Level paper?

| Question | Topics | Marks |
| --- | --- | --- |
| Q1 | volumetric analysis, acid-base titration, water of crystallisation, experimental | 50 |
| Q2 | ethyne preparation, soap preparation, organic chemistry, experimental | 50 |
| Q3 | water analysis, free chlorine, suspended and dissolved solids, experimental | 50 |
| Q4 | short questions, general chemistry | 50 |
| Q5 | periodic trends, ionisation energy, electronegativity, bonding | 50 |
| Q6 | octane number, oil refining, isomers, heat of formation | 50 |
| Q7 | chemical equilibrium, kc, le chateliers principle | 50 |
| Q8 | organic reactions, reaction schemes, polymerisation, free radical mechanism | 50 |
| Q9 | rates of reaction, graphing, catalysis, heterogeneous catalysis | 50 |
| Q10 | emission spectrum, flame tests, gas laws, yield calculation | 50 |
| Q11 | oxidation of alcohols, oxidation numbers, acids and bases, greenhouse effect | 50 |

## Ordinary Level

- [Exam Paper](https://www.examinations.ie/archive/exampapers/2026/LC022GLP000EV.pdf)
- [Marking Scheme](https://www.examinations.ie/archive/markingschemes/2026/LC022GLP000EV.pdf)

### What's in the 2026 Ordinary Level paper?

| Question | Topics | Marks |
| --- | --- | --- |
| Q1 | ethene preparation, unsaturation test, hydrocarbons, structural formulae | 50 |
| Q2 | volumetric analysis, acid-base titration, concentration calculation, indicators | 50 |
| Q3 | rates of reaction, hydrogen peroxide, catalysts, graphing | 50 |
| Q4 | short questions, general knowledge, atomic structure, thermochemistry | 50 |
| Q5 | electronegativity, covalent bonding, molecular shape, ionic bonding | 50 |
| Q6 | hydrocarbons, iupac nomenclature, combustion, structural isomers | 50 |
| Q7 | water hardness, chloride test, acids and bases, ph | 50 |
| Q8 | organic reactions, reaction types, aldehydes, oxidation of alcohols | 50 |
| Q9 | chemical equilibrium, le chatelier's principle, diffusion, gas laws | 50 |
| Q10 | redox, radioactivity, mole calculations, stoichiometry | 50 |
| Q11 | flame tests, octane number, sewage treatment, polymers | 50 |

## Revise Chemistry by topic

- [Atomic Theory & the Periodic Table](https://examai.ie/past-papers/leaving-cert/chemistry/topic/atomic-theory-the-periodic-table)
- [Chemical Bonding & Molecular Shape](https://examai.ie/past-papers/leaving-cert/chemistry/topic/chemical-bonding-molecular-shape)
- [Oxidation–Reduction & Electrochemistry](https://examai.ie/past-papers/leaving-cert/chemistry/topic/oxidation-reduction-electrochemistry)
- [Stoichiometry, the Mole, Formulas & Equations](https://examai.ie/past-papers/leaving-cert/chemistry/topic/stoichiometry-the-mole-formulas-equations)
- [Volumetric Analysis (Titrations)](https://examai.ie/past-papers/leaving-cert/chemistry/topic/volumetric-analysis-titrations)
- [Acids, Bases & pH](https://examai.ie/past-papers/leaving-cert/chemistry/topic/acids-bases-ph)
- [Rates of Reaction](https://examai.ie/past-papers/leaving-cert/chemistry/topic/rates-of-reaction)
- [Chemical Equilibrium](https://examai.ie/past-papers/leaving-cert/chemistry/topic/chemical-equilibrium)
- [Thermochemistry (Energetics)](https://examai.ie/past-papers/leaving-cert/chemistry/topic/thermochemistry-energetics)
- [Organic Chemistry, Hydrocarbons & Fuels](https://examai.ie/past-papers/leaving-cert/chemistry/topic/organic-chemistry-hydrocarbons-fuels)
- [Water, Environmental & Atmospheric Chemistry](https://examai.ie/past-papers/leaving-cert/chemistry/topic/water-environmental-atmospheric-chemistry)
- [Industrial Chemistry](https://examai.ie/past-papers/leaving-cert/chemistry/topic/industrial-chemistry)
- [Laboratory Skills & Techniques](https://examai.ie/past-papers/leaving-cert/chemistry/topic/laboratory-skills-techniques)

## Related

- [Chemistry 2025](https://examai.ie/past-papers/leaving-cert/chemistry/2025)
- [All Chemistry years](https://examai.ie/past-papers/leaving-cert/chemistry)