Why is the Mole Concept the "Make or Break" Chapter for Chemistry Exams?

Every year, thousands of students lose crucial marks in O Level Chemistry 5070 and IGCSE Chemistry 0620 due to a weak foundation in Stoichiometry and the Mole Concept. Cambridge examiners report that over 40% of calculation-based errors originate from this single topic. Unlike random YouTube videos filled with ads and irrelevant content, our resources are specifically designed for your syllabus.

Concise, Exam-Centered Definition:

The Mole: The amount of substance that contains the same number of particles (atoms, molecules, ions) as there are atoms in exactly 12g of carbon-12. This number is the Avogadro constant, 6.02 × 10²³ mol⁻¹.

Molar Mass (M): The mass of one mole of a substance, expressed in g mol⁻¹. It is numerically equal to the relative atomic/molecular/formula mass.

Our complete guide to the Mole Concept and Stoichiometry breaks down complex calculations into simple, step-by-step processes aligned with O Level 5070 and IGCSE 0620 syllabi.

Your Free, High-Yield Chemistry Notes PDF Library

Download topic-wise notes curated by Prof. Faisal Janjowa (The Chemistry Guru). These are the exact resources used by our crash course students to achieve A* and A grades.

📘 Moles & Stoichiometry NotesMaster calculations, empirical formulas, limiting reactants.
🧪 Acids, Bases and SaltsProperties, preparations, titration calculations.
⚗️ Organic Chemistry NotesIncluding polymers, hydrocarbons, functional groups.
🔗 Chemical BondingIonic, covalent, metallic bonding explained.
⚡ ElectrolysisAnode, cathode, predicting products.
📄 Full Formula Sheet (2026)All equations, constants, and data in one PDF.
📚 Complete Chapter NotesAll chapters for O-Level 5070 (2026 Onwards).
📖 Definitions ListExam-focused definitions for all chapters.

Why Our Structured Courses Beat Random YouTube Searches

Scrolling through unrelated videos on organic chemistry polymers or electrolysis wastes precious study time. Our courses are direct, efficient, and guaranteed to cover your syllabus.

  • ✓ 100% Syllabus Alignment: Every lesson maps directly to CAIE 0620 and 5070 syllabus points.
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See Our Teaching Style: Solved Past Paper

Watch Prof. Faisal solve a complete O Level 5070 Paper 42 to understand our problem-solving approach.

FAQs: Mole Concept & Exam Preparation

Q1: I’m weak in calculations. Can I still get an A*?

Absolutely. Our Crash Course dedicates over 3 hours solely to stoichiometry, moles, titration, and electrolysis calculations. We start from the absolute basics.

Q2: Are polymers part of organic chemistry in IGCSE/O-Level?

Yes. Organic chemistry polymers like poly(ethene), PVC, and nylon are a core part of the syllabus. Our Organic Chemistry Notes PDF covers addition and condensation polymerization with examples.

Q3: How can I memorize the periodic table and reactivity series?

Use our reactivity guide and this catchy song:

Q4: Is the "Acids, Bases and Salts" course worth it?

If this chapter is your weakness, the 30-minute focused course is the fastest fix. It covers all properties, preparation methods, and the required practicals for Paper 5/ATP. Enroll here.

What Students & Teachers Say

“I used to score 30-40% in Chemistry. After downloading the Mole Concept PDF and joining the crash course, I achieved a 92% in my mocks. The formula sheet and definitions list were lifesavers for last-minute revision.”

– Ayesha R., O-Level Student, Karachi

“As a tutor, I recommend Cambridge Classroom resources to all my IGCSE students. The notes are clearer than any textbook, and the solved papers show students exactly what examiners want.”

– Mr. David Chen, Chemistry Tutor, Singapore