Mole Concept Notes PDF Free Download 2025-2027
The Ultimate Stoichiometry & Mole Concept Notes for O Level Chemistry 5070 | IGCSE Chemistry 0620 | Cambridge A Level 9701 | Edexcel | AQA
Updated for 2025-2027 syllabus • 100% exam-centred • Used by 15,000+ A* students worldwide
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Key Mole Concept Definitions You Must Know (CAIE 5070 & 0620)
Relative Atomic Mass (Ar)
Average mass of an atom compared to 1/12th the mass of a carbon-12 atom.
Relative Molecular Mass (Mr)
Sum of relative atomic masses of all atoms in a molecule.
Mole
Amount of substance containing 6.02 × 10²³ particles (Avogadro’s number).
Molar Mass
Mass of one mole of a substance (in g mol⁻¹).
Molecular Formula
Actual number of atoms of each element in a molecule (multiple of empirical formula).
Limiting Reactant
Reactant completely used up first – determines maximum product formed.
Percentage Yield
(Actual yield ÷ Theoretical yield) × 100%
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Bonus Free Resources for Mole Concept Mastery
- Mole Concept Full Chapter: Click Here
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- All Definitions List (Mole Section): 2025 Definitions PDF
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- Complete Syllabus 2025-2027: O Level 5070 Syllabus | IGCSE 0620 Syllabus
About the Author – Professor Faisal Janjua (The Chemistry Guru)
17+ years teaching CAIE O Level & IGCSE | 200+ World Distinctions | 18,000+ students taught globally | Creator of these exact mole concept notes used by toppers in Pakistan, UAE, Saudi Arabia, UK, Singapore.
Student Reviews (2025 Results)
Frequently Asked Questions (FAQs)
Is this mole concept notes PDF enough for A* in 5070 & 0620?
Yes! 98% of students who used this + past papers scored A or A* in 2025 exams.
Does it include limiting reactant and percentage yield?
Yes – fully explained with step-by-step methods and past-paper examples.
Is it updated for 2025-2027 syllabus?
100% updated for CAIE O Level 5070, IGCSE 0620, and A Level 9701.
Can I use it for Edexcel IGCSE 4CH1 and AQA?
Yes – mole concept is universal across all boards.
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