Process
AQA AS Chemistry, memorised in year one.
Everything the AS examines and nothing from the second year. Drill the 11 topics the 7404 specification actually examines.
- AS of 7405
- 11 topics
- 77 subtopics
AQA AS-Level Chemistry 7405
Atomic Structure
Topic overviewFundamental ParticlesMass Number and IsotopesTime of Flight Mass Spectrometry: Ionisation and AccelerationTime of Flight Mass Spectrometry: Drift, Detection and Calculating m/zElectron Configuration: Sub-shells and OrbitalsElectron Configuration: Writing Configurations for Atoms and IonsIonisation Energies and Periodic Trends
Amount of Substance
Topic overviewRelative Atomic and Molecular MassThe Mole and the Avogadro ConstantThe Ideal Gas EquationEmpirical and Molecular FormulaBalanced Equations and Reaction CalculationsAtom Economy and Percentage YieldAcid-Base Titrations: Principles, Indicators and ApparatusAcid-Base Titrations: Standard Solutions and Calculations
Bonding
Topic overviewIonic BondingCovalent, Dative Covalent and Metallic BondingCrystal Structures: Giant Ionic Lattices and DiamondCrystal Structures: Graphite and Simple Molecular SolidsShapes of Molecules and Ions: VSEPR and Electron Pair RepulsionShapes of Molecules and Ions: Predicting Shapes and Bond AnglesElectronegativity and Bond PolarityIntermolecular Forces
Energetics and Thermodynamics
Kinetics
Chemical Equilibria
Redox and Electrochemistry
Periodicity and Group Chemistry
Topic overviews, p, d and f Block ClassificationTrends in Period 3Group 2 Trends in Atomic Radius, Ionisation Energy and Melting PointReactions of Group 2 with WaterSolubility Trends of Group 2 HydroxidesSolubility Trends of Group 2 SulfatesUses of Group 2 CompoundsTest for Sulfate IonsTrends in Electronegativity and Boiling Point of HalogensHalogens as Oxidising Agents and Displacement ReactionsHalide Ions as Reducing Agents: Chloride and BromideHalide Ions as Reducing Agents: Iodide, and the EquationsTest for Halide Ions Using Silver NitrateTests for Ammonium, Group 2, Hydroxide and Carbonate IonsReactions of Chlorine with WaterReactions of Chlorine with Cold Dilute NaOH and Water Treatment
Introduction to Organic Chemistry
Hydrocarbons
Topic overviewAlkanes, Fractional Distillation and CrackingCombustion of Alkanes and PollutantsFree Radical Chlorination of AlkanesAlkenes: Structure, Bonding and Electrophilic AdditionMarkovnikov's Rule and Carbocation StabilityAddition Polymers and Repeating UnitsProperties and Uses of Polyalkenes
Halogenoalkanes, Alcohols and Organic Analysis
Topic overviewNucleophilic Substitution of HalogenoalkanesEffect of Bond Enthalpy on Reaction RateElimination Reactions and Competing MechanismsCFCs and Ozone DepletionIndustrial Production of AlcoholsBiofuels and Carbon NeutralityClassification and Oxidation of AlcoholsDistinguishing Aldehydes and KetonesElimination of Water from AlcoholsTest-Tube Reactions for Functional GroupsMass Spectrometry and Molecular FormulaInfrared Spectroscopy, Functional Groups and Global Warming
What AQA AS Chemistry covers, and what it leaves out
AQA AS Chemistry is specification 7404, the standalone first-year qualification alongside the 7405 A level. This page holds only what the AS examines: 11 topics across 77 subtopics, 1,213 active recall questions, starting with Atomic Structure, Amount of Substance and Bonding. The 7 topics kept back for the second year are not shown, so nothing here is content you have not been taught yet.
Starting the second year? The full AQA A-Level Chemistry page adds the A2 topics on top of everything here.
AQA AS and A-level Chemistry, specification 7405. Read the AQA specification at a glance ↗
The full specification
11 topics, 77 subtopics. Open any topic to see what is inside it.
01Atomic Structure7 subtopicsOpen topic
- Fundamental Particles
- Mass Number and Isotopes
- Time of Flight Mass Spectrometry: Ionisation and Acceleration
- Time of Flight Mass Spectrometry: Drift, Detection and Calculating m/z
- Electron Configuration: Sub-shells and Orbitals
- Electron Configuration: Writing Configurations for Atoms and Ions
- Ionisation Energies and Periodic Trends
02Amount of Substance8 subtopicsOpen topic
- Relative Atomic and Molecular Mass
- The Mole and the Avogadro Constant
- The Ideal Gas Equation
- Empirical and Molecular Formula
- Balanced Equations and Reaction Calculations
- Atom Economy and Percentage Yield
- Acid-Base Titrations: Principles, Indicators and Apparatus
- Acid-Base Titrations: Standard Solutions and Calculations
03Bonding8 subtopicsOpen topic
- Ionic Bonding
- Covalent, Dative Covalent and Metallic Bonding
- Crystal Structures: Giant Ionic Lattices and Diamond
- Crystal Structures: Graphite and Simple Molecular Solids
- Shapes of Molecules and Ions: VSEPR and Electron Pair Repulsion
- Shapes of Molecules and Ions: Predicting Shapes and Bond Angles
- Electronegativity and Bond Polarity
- Intermolecular Forces
04Energetics and Thermodynamics4 subtopicsOpen topic
05Kinetics3 subtopicsOpen topic
06Chemical Equilibria3 subtopicsOpen topic
07Redox and Electrochemistry3 subtopicsOpen topic
08Periodicity and Group Chemistry16 subtopicsOpen topic
- s, p, d and f Block Classification
- Trends in Period 3
- Group 2 Trends in Atomic Radius, Ionisation Energy and Melting Point
- Reactions of Group 2 with Water
- Solubility Trends of Group 2 Hydroxides
- Solubility Trends of Group 2 Sulfates
- Uses of Group 2 Compounds
- Test for Sulfate Ions
- Trends in Electronegativity and Boiling Point of Halogens
- Halogens as Oxidising Agents and Displacement Reactions
- Halide Ions as Reducing Agents: Chloride and Bromide
- Halide Ions as Reducing Agents: Iodide, and the Equations
- Test for Halide Ions Using Silver Nitrate
- Tests for Ammonium, Group 2, Hydroxide and Carbonate Ions
- Reactions of Chlorine with Water
- Reactions of Chlorine with Cold Dilute NaOH and Water Treatment
09Introduction to Organic Chemistry6 subtopicsOpen topic
10Hydrocarbons7 subtopicsOpen topic
11Halogenoalkanes, Alcohols and Organic Analysis12 subtopicsOpen topic
- Nucleophilic Substitution of Halogenoalkanes
- Effect of Bond Enthalpy on Reaction Rate
- Elimination Reactions and Competing Mechanisms
- CFCs and Ozone Depletion
- Industrial Production of Alcohols
- Biofuels and Carbon Neutrality
- Classification and Oxidation of Alcohols
- Distinguishing Aldehydes and Ketones
- Elimination of Water from Alcohols
- Test-Tube Reactions for Functional Groups
- Mass Spectrometry and Molecular Formula
- Infrared Spectroscopy, Functional Groups and Global Warming
How you work through it
Pick the mode that fits the time you have.
Try three questions
No account needed. Answer from memory first.
Your recallNot started
Key term
How are mass number, atomic number and neutron count related?
Key term
What are the three fundamental particles found in an atom?
Spaced Repetition Schedule
How reviews are timed
Levo will automatically distribute all of your progress into a spaced repetition calendar. Once you’ve answered, it’s scheduled for you on the next day in the spaced repetition schedule. Over time, the gaps between your recall get bigger, from a day to three years, reinforcing memorisation over a long period of time.
Interval sequence
- 1 day
- 3 days
- 7 days
- 14 days
- 30 days
- 60 days
- 4 months
- 8 months
- 1 year
- 2 years
- 3 years
What is inside Levo
Six ways to work the same material
Chemistry revision questions
Common questions about revising AQA AS-Level Chemistry. Tap any to open it.
What is on AQA AS Chemistry?
11 topics across 77 subtopics, examined as its own qualification, specification 7404. They are all listed on this page, and each one opens to the subtopics inside it. The full topic list is Atomic Structure, Amount of Substance, Bonding, Energetics and Thermodynamics, Kinetics, Chemical Equilibria and more.
Does AS Chemistry count towards the full A level?
No. AS was decoupled in England in 2015, so AQA AS Chemistry (7404) is a separate qualification and none of its marks carry into the 7405 A level. It is still the same content though, which is why revising it well sets up the second year.
What is the difference between AS and A level Chemistry?
AS is the first-year units only. The A level adds 7 further topics, among them Acids and Bases, Period 3 Elements and Their Oxides, Transition Metals, and expects you to connect them back to the AS material. Work the AS content here, then move up to the full A level page when you start the second year.
When do you sit AQA AS Chemistry?
Normally at the end of Year 12, in the summer series. That gives you one year to memorise 1,213 questions' worth of material, which is roughly 6 questions a day across an academic year if you start in September.
How should you revise for AS Chemistry?
By retrieval, not rereading. Cover the answer, pull it from memory, then check. Levo runs that loop across all 11 AS topics and brings each question back on a spaced schedule, so what you learn in September is still there in June.
Is it worth revising AS content again for the A level?
Yes, and it is the mistake most students make. The A-level papers examine this content again from scratch, and because the AS marks do not carry over, the only thing your first year leaves you with is what you still remember. Keeping it on a spaced schedule through Year 13 costs far less than relearning it.
How many questions are there for AQA AS Chemistry?
1,213, written from the 7405 subject content and grouped into 77 subtopics so you can work one small area at a time rather than a whole topic at once.
Can you use Levo for just the AS year?
Yes. Pick your subject, choose the AS topics on the topic screen, and every mode — the 3-step method, Cram, Blank Blitz, Build It and Test It — works only that material. Add the second-year topics when you get to them.
Every question in Chemistry, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
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