Ireland - Leaving Cert Chemistry

Leaving Cert Chemistry grinds

Chemistry rewards students who can do the calculations quickly and accurately: moles, concentrations, titrations and equilibrium all carry heavy marks. Our tutors drill the maths of chemistry and the redeveloped course's new investigation.

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What every programme includes

✓ Moles, concentration and titration calculations
✓ Organic chemistry: reactions and mechanisms
✓ Equilibrium, rates and energy
✓ Experiment-based questions
✓ The 2027 investigation (40%)
✓ Higher and Ordinary Level

Lesson times in your time zone

Weekdays 3pm-9pm after school · Weekends 8am-8pm, your local time. Pick the slot when you book.

Chemistry from 2027

Students who began fifth year in September 2025 are the first to take the redeveloped course: a 2 hour 30 minute written paper worth 60% (300 marks) and an additional assessment component worth 40%, completed during sixth year and submitted to the State Examinations Commission.

The SEC published two Higher and two Ordinary Level sample papers for the new written exam; no marking schemes came with them, so tutors mark sample-paper answers against the specification's learning outcomes.

Why calculations decide the grade

Almost every long question includes a calculation, and errors cascade: a wrong number of moles in part (a) makes every later part wrong. Students who set out working clearly (formula, substitution, units) keep the method marks even when they slip.

✓ Mole and mass conversions, and limiting reagents
✓ Concentration in mol/L, g/L and parts per million
✓ Titration calculations and percentage purity
✓ Equilibrium constants and pH

How our Chemistry grinds work

Sessions alternate between a calculation type and a topic, with one timed question set as homework and marked at the start of the next session. For the investigation, tutors teach planning, safety and data analysis; the work itself stays the student's own.

Higher or Ordinary Level?

The deciding factor is usually calculations. Students who can do mole and concentration problems reliably by Christmas of sixth year tend to do well at Higher Level; students who can't often lose a whole long question to one early mistake. A few weeks of focused calculation practice before the mocks gives a much clearer picture than a decision made in fifth year.

Leaving Cert Chemistry from 2027

Component	Weight	Format
Written examination	60%	2h30, Higher or Ordinary Level
Investigation (additional assessment component)	40%	Completed in sixth year and submitted to the SEC

First examined June 2027 for students who began fifth year in September 2025.

Sixth year, 2026-27

1
Autumn
Moles and concentration until they are automatic; one calculation type a week.
2
Investigation period
Plan, carry out and write up on schedule; theory sessions keep going.
3
After Christmas
Organic chemistry and equilibrium; timed sample-paper questions.
4
May
Full sample papers and mixed calculation drills.