Leaving Certificate Chemistry Mole Concept & Stoichiometry Masterclass 2026 | Moles, Gas Volumes, Avogadro’s Constant, Percentage Yield, Limiting Reactants & SEC Exam Questions

Master the Mole Concept, Stoichiometry, gas volume calculations, and SEC Chemistry exam questions with this focused Leaving Certificate Chemistry Higher Level masterclass designed specifically for Senior Cycle students.

This live online Chemistry masterclass breaks down one of the most important and commonly feared areas of the Leaving Certificate Chemistry course in a clear, step-by-step, exam-focused way. Students will learn how to confidently approach mole calculations, balanced equations, gas volume questions, percentage yield problems, limiting reactants, and SEC-style calculation questions using simple methods, worked examples, and practical calculation shortcuts.

Perfect for students aiming to improve confidence, accuracy, exam technique, and overall performance in Higher Level Chemistry calculations.

Topics Covered

• The Mole Concept
• Relative Atomic Mass (Ar) & Relative Molecular Mass (Mr)
• Mole Calculations
• Stoichiometry
• Balanced Chemical Equations
• Avogadro’s Constant
• Gas Volume Calculations
• STP Calculations
• Percentage Yield
• Limiting Reactants
• Empirical & Molecular Formula
• SEC Chemistry Numeracy Skills
• SEC Exam Questions & Worked Examples
• Common Chemistry Calculation Mistakes
• Examiner Tips & Marking Scheme Advice
• Step-by-Step Calculation Methods
• Chemistry Calculation Triangles & Memory Aids

What Students Will Learn

• How to solve mole calculations confidently
• How to rearrange and apply Chemistry formulas correctly
• How to approach SEC calculation questions step-by-step
• How to avoid common exam mistakes
• How to improve speed and accuracy in Chemistry numeracy questions
• How to use calculation triangles and shortcuts effectively
• How Stoichiometry is commonly examined by the SEC

Ideal For

• Leaving Certificate Chemistry Higher Level students
• Students struggling with Chemistry calculations
• Students preparing for the SEC exam
• Students aiming for higher grades in Chemistry
• Students wanting stronger confidence in Chemistry numeracy and problem-solving skills

Masterclass Details

Sunday 24 May 2026
1:00 PM – 2:15 PM
Live Online Chemistry Masterclass

Science Masters