Ireland — Chemistry
NCCA — National Council for Curriculum and Assessment
Chemistry in Ireland is taught as part of Junior Cycle Science (Chemical World strand) in 1st–3rd Year. At Leaving Certificate level it becomes a standalone subject examined at Higher (H) and Ordinary (O) level.
29 topics — click any topic for a full virtual lesson with worked examples.
1st Year · 2nd Year · 3rd Year (Junior Cert)
Junior Cycle Science — Chemical World
The Chemical World strand introduces states of matter, atoms, elements, compounds, reactions, and the periodic table.
Matter & Its Properties
- 📖→States of matterSolid, liquid, gas · Changes of state · Particle model
- 📖→Pure substances & mixturesElements, compounds, mixtures · Separation techniques: filtration, evaporation, distillation, chromatography
- 📖→Atoms & the periodic tableProtons, neutrons, electrons · Atomic number & mass number · Groups & periods · +1 more
5th Year · 6th Year (Leaving Cert)
Leaving Certificate Chemistry
Examined on two written papers. Mandatory experiments count toward the assessment. Higher level covers additional theory and calculations.
Atomic Structure & Periodic Table
Chemical Bonding
Stoichiometry
- 📖→The mole conceptAvogadro's number · Molar mass · Moles = mass / molar mass
- 📖→Balancing & using equationsBalancing by inspection · Mole ratios · Limiting reagent · +1 more
- 📖→Gas calculationsMolar volume at STP · PV = nRT (HL)
- 📖→Solutions & concentrationMolarity c = n/V · Dilution · Volumetric analysis / titration
Chemical Reactions & Equilibrium
- 📖→Rates of reactionCollision theory · Factors: concentration, temperature, surface area, catalyst · Rate expressions (HL)
- 📖→Chemical equilibriumLe Chatelier's principle · Kc expression (HL) · Haber process & Contact process as examples
- 📖→ThermochemistryExothermic & endothermic reactions · ΔH — heat of formation, combustion, neutralisation · Hess's Law (HL) · +1 more
Acids, Bases & Electrochemistry
- 📖→Acids & basesArrhenius, Brønsted-Lowry definitions · Strong vs weak acids (Ka, HL) · pH = -log[H⁺] · +1 more
- 📖→Volumetric analysisAcid-base titrations · Standardisation of solutions · Calculations from titration data
- 📖→Redox & electrochemistryOxidation numbers · Half-equations · Electrolysis · +2 more
Organic Chemistry
- 📖→HydrocarbonsAlkanes, alkenes, alkynes · Nomenclature (IUPAC) · Fractional distillation of crude oil · +1 more
- 📖→Functional groupsAlcohols, aldehydes, ketones, carboxylic acids, esters, amines · Reactions: oxidation, esterification, saponification
- 📖→Organic reactionsAddition, substitution, elimination · Free radical halogenation · Polymerisation (addition & condensation)
- 📖→Instrumentation & spectroscopy (HL)Mass spectrometry · IR spectroscopy · NMR concepts
Environmental & Industrial Chemistry
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