AS Chemistry Notes and Worksheets
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Free, complete AS & A Level Chemistry (Cambridge 9701) resources from Mega Lecture — full topic notes, worksheets, MCQs and marking schemes for every part of the syllabus, organised by topic across physical, inorganic and organic chemistry. Every file is a downloadable PDF, no sign-up required.
Revision & Reference
Revision guides, the data booklet, syllabus, definitions and overview notes.
- Important AS Chemistry Definitions
- List Definition Chemistry
- All Mechanisms Organic
- A Level Chemistry Edexcel Sample
- Organic Chemistry As
- Physical Chemistry As
- Energetics Enthalpydefinitions — Worksheet
- All Mechanisms Organic 1
- Cambridge International AS And A Level Chemistry Revision Guide
- Syllabus
- Chemistry Data Booklet
- AS All In One Revision Notes
Physical Chemistry
Atomic Structure & Electrons
- Atomic Structure Notes 1
- Electronic Configuration Notes 1
- Atomic Structure
- Electrons In Atoms
- Atomic Structure As
- Atomic Structure — Questions
- Atomic Structure — Marking scheme
- Atomic Structure And Chemical Bonding
- Atomic Structure And Chemical Bonding — MCQs
- Exercise Atomic Symbols — Worksheet
- Exercise Electronic Configuration — Worksheet
- Exercise Ionisation Energies — Worksheet
- Exercise — Answers
- Notes — Worksheet
- Notes — Marking scheme
- Atomic Structure — Worksheet
- Atomic Structure — Answers
- Electronic Configuration — Worksheet
- Electronic Configuration — Answers
Atoms, Molecules & Stoichiometry (Moles)
- Moles — Worksheet
- Shapes Of Molecules Notes
- Moles And Equations
- Atoms Molecules And Stoichiometry
- Atoms Molecules And Stoichiometry 1
- Atoms Moles And Stoichiometry
- Moles — Questions
- Moles — Marking scheme
- Shape Molecules — Worksheet
- Hesscycleformula — Worksheet
- Drawing Hess Cycle — Worksheet
- Theory Moles Topical 2 — MCQs
- Atoms Molecules And Stoichiometry 2
- Moles
- Theory Moles Topical 1 — MCQs
- Theory Moles Topical — MCQs
- Exercise Using Moles And Reacting Masses — Worksheet
- Exercise Solutions — Worksheet
- Exercise Ideal Gas Equation1 — Worksheet
- Exercise Empirical And Molecular Formulae — Worksheet
- Exercise Ionic Equations — Worksheet
- Exercise More Complex Calculations — Worksheet
- To Exercises 2 — Answers
- Notes — Worksheet
- Notes — Marking scheme
- Shapes Of Molecules — Worksheet
- Shapes Of Molecules — Answers
- Moles And Mass — Worksheet
- Moles And Mass — Answers
- Moles And Solutions — Worksheet
- Moles And Solutions — Answers
- Moles And Stoichiometry — Worksheet
- Moles And Stoichiometry — Answers
- Moles And Volume — Worksheet
- Moles And Volume — Answers
- Overall Chem Calculations — Worksheet
- Overall Chem Calculations — Answers
Chemical Bonding & Structure
- Covalent Bonds Notes
- Intermolecular Forces Notes
- Bonding Notes 1
- Chemical Bonding
- Lattice Energy
- Chemical Bonding 2
- Chemical Bonding Qp
- Chemical Bonding — Marking scheme
- Exercise Dot Cross Diagrams — Worksheet
- Exercise Electronegativities — Worksheet
- Exercise Molecular Shapes — Worksheet
- Exercise Shapes Polarity And Intermolecular Forces — Worksheet
- Exercise Structure And Bonding Summary 1 — Worksheet
- Exercise Structure And Bonding Summary Ii — Worksheet
- To Exercises — Answers
- Notes — Worksheet
- Notes — Marking scheme
- Covalent Bonds — Worksheet
- Covalent Bonds — Answers
- Intermolecular Forces — Worksheet
- Intermolecular Forces — Answers
- Bonding — Worksheet
- Bonding — Answers
- Chemical Bonding And Structure
States of Matter
- States Of Matter Notes
- States Of Matter 1
- States Of Matter
- States Of Matter Question Paper
- States Of Matter Marking Scheme
- Ideal Gases — Worksheet
- Exercise Energy Changes In Chemical Reactions — Worksheet
- Exercise Bond Dissociation Energies — Worksheet
- Exercise Measuring Enthalpy Changes — Worksheet
- Exercise Formation And Combustion Equations — Worksheet
- Exercise Hess Law — Worksheet
- To Exercises — Answers
- Assessed — Worksheet
- Notes — Marking scheme
- Notes — Worksheet
Chemical Energetics
- Energetics Notes
- Enthalpy Changes
- Chemical Energetics
- Chemical Energetics As
- Energy Changes — Questions
- Energy Changes — Marking scheme
- Energetics McT — Worksheet
- Energetics Bondenergy — Worksheet
- Chemical Energetics — Marking scheme
- Exercise Rates Of Reaction — Worksheet
- Exercise Equilibrium Constants — Worksheet
- Exercise Changing The Position Of Equilibrium — Worksheet
- To Exercises — Answers
- Notes — Worksheet
- Notes — Marking scheme
Redox & Electrochemistry
- Redox Notes
- Redox Reactions And Electrolysis
- Electrode Potentials
- Electrochemistry
- Reactions For
- Test Tube Reactions In
- Exercise Redox Reactions — Worksheet
- Exercise Group 2 Chemistry — Worksheet
- Exercise Reactions Of Halogens And Halides — Worksheet
- Exercise Uses Of Chlorine And Chlorate I — Worksheet
- Exercise Qualitative Analysis — Worksheet
- To Exercises — Answers
- Notes — Worksheet
- Notes — Marking scheme
Equilibria
- Equilibria Notes
- Equilibrium
- Ionic Equilibria
- Chemical Equilibria
- Equilibria
- Le Chatelier — Worksheet
- Equilibriumconstant Kp — Worksheet
- Equilibriumconstant Kc — Worksheet
- Bronstedlowryacidsbases — Worksheet
- Exercise Formulae And Structure — Worksheet
- Exercise Nomenclature1 — Worksheet
- Exercise Isomerism — Worksheet
- Exercise Fractional Distillation Cracking And Combustion — Worksheet
- To Exercises 1 — Answers
- Notes — Marking scheme
- Notes — Worksheet
Reaction Kinetics
- Reaction Kinetics Notes
- Rates Of Reaction
- Reaction Kinetics
- Rate Of Reaction
- Exercise Chlorination Of Alkanes — Worksheet
- Exercise Addition Reactions Of Alkenes — Worksheet
- Exercise Reactions Of Haloalkanes — Worksheet
- Exercise Alcohols — Worksheet
- To Exercises — Answers
- Notes — Worksheet
- Notes — Marking scheme
- 1 — Worksheet
Inorganic Chemistry
Chemical Periodicity
- Periodic Trends Notes
- Chemical Periodicity
- Periodicity
- Exercise Analytical Techniques — Worksheet
- To Exercises 1 — Answers
- Notes — Worksheet
- Notes — Marking scheme
- Periodic Trends — Worksheet
- Periodic Trends — Answers
Group 2
Group 17 (Halogens)
Nitrogen & Sulfur
Transition Elements
Organic Chemistry
Introduction to Organic Chemistry
- AS Organic Reactions
- Intro To Organic Chem
- An Introduction To Organic Chemistry
- Organic Chemistry Intro
- Organic Chemistry Intro Marking Scheme
- Intro To Organic
Hydrocarbons (Alkanes & Alkenes)
Halogen Derivatives (Halogenoalkanes)
Hydroxy Compounds (Alcohols)
- Alcohols Notes
- Alcohols And Esters
- Hydroxy Compounds
- Hydroxyl Compounds
- Hydroxyl Compounds Marking Scheme
- Organic Hydroxy Compounds
- Alcohols
Carbonyl Compounds
Carboxylic Acids & Derivatives
- Acids And Esters Notes
- Carboxylic Acids And Acyl Compounds
- Carboxylic Acids And Derivatives I
- Carboxylic Acids And Derivatives
- Carboxylic Acids And Derivatives 1
- Organic Carboxylic Acids And Derivatives
Benzene & Arenes
Organic Nitrogen Compounds
Polymerisation
Analysis & Other Topics
Analytical Chemistry & Spectroscopy
Atmosphere & the Environment
Design & Materials
Other Topics
- Energyprofile Activationenergy — Worksheet
- Ice Breaker
- Ice Breaker 1 — Answers
- Organic 2 — MCQs
- Group IV
- Inorganic Chem
- Sulphur Nitrogen
- Data Sheet Revision
Past Papers
Related resources
Frequently asked questions
Where can I download free AS Chemistry notes?
Every item above is a free PDF — click any to open or download it, no sign-up needed.
Which syllabus do these follow?
They are aligned to the Cambridge International AS & A Level Chemistry 9701 syllabus.
Do you include worksheets and marking schemes?
Yes — each topic groups its notes, worksheets, MCQs and marking schemes together.
Are these really free?
Yes, completely free. You can also book a free demo lecture below.
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