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AQA A level Chemistry
Exam season isn't getting any slower, bro. 🥀
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01 / 05
Mark-by-mark answers
Know exactly where every mark comes from.
Long answers are split into separate, creditworthy points, with key terms in bold. You can see at a glance what you remembered and what you left out.
Describe non-cyclic photophosphorylation. (5 marks)
- Light is absorbed by chlorophyll in photosystem II, exciting electrons to a higher energy level.
- The excited electrons pass along an electron transport chain, releasing energy.
- This energy is used to make ATP from ADP and Pi.
- Photolysis of water replaces the lost electrons, releasing protons and oxygen.
- Electrons are re-excited in photosystem I and, with protons, reduce NADP.
02 / 05
Explanations and common mistakes
Learn the why, dodge the trap.
Key cards explain why the answer is right. Common Mistake boxes flag the errors examiner reports show students making again and again, so you know where marks get lost.
Two points on a progressive wave are separated by 0.30 m. The wavelength is 0.80 m. Calculate their phase difference in radians. (3 marks)
- Use phase difference = 2π × separation / wavelength.
- Phase difference = 2π × 0.30 / 0.80.
- Phase difference = 2.36 rad.
Explanation
A full wavelength corresponds to 2π radians, so phase difference is the same fraction of 2π as the separation is of one wavelength.
Common Mistake
Do not use separation divided by wavelength as the answer in radians without multiplying by 2π.
03 / 05
Visual recall
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One label is hidden and everything around it stays in place, so you remember the structure itself, not just where a box used to be.
Name the organelle where photosynthesis takes place. (1 mark)
Answer chloroplast
04 / 05
Spaced repetition
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Explain why a small increase in temperature causes a large increase in the rate of reaction. (2 marks)
- Many more particles have energy greater than or equal to the activation energy.
- So there are more frequent successful collisions.
Next review in 1 day
05 / 05
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Each deck is built around your exact specification, exam board wording and required practicals, then organised into the same topics and subtopics you're taught.
StemUp Anki + Quizlet
Deck
AQA A-Level Chemistry 7405
01 Physical Chemistry
- 01 Atomic Structure
- 02 Amount of Substance
- 03 Bonding
- 04 Energetics
- 05 Kinetics
- 06 Chemical Equilibria and Kc
- 07 Oxidation, Reduction and Redox Equations
- 08 Thermodynamics
- 09 Rate Equations
- 10 Equilibrium Constant Kp
- 11 Electrode Potentials and Electrochemical Cells
- 12 Acids and Bases
02 Inorganic Chemistry
- 01 Periodicity
- 02 Group 2, the Alkaline Earth Metals
- 03 Group 7 (17), the Halogens
- 04 Properties of Period 3 Elements and their Oxides
- 05 Transition Metals
- 06 Reactions of Ions in Aqueous Solution
03 Organic Chemistry
- 01 Introduction to Organic Chemistry
- 02 Alkanes
- 03 Halogenoalkanes
- 04 Alkenes
- 05 Alcohols
- 06 Organic Analysis
- 07 Optical Isomerism
- 08 Aldehydes and Ketones
- 09 Carboxylic Acids and Derivatives
- 10 Aromatic Chemistry
- 11 Amines
- 12 Polymers
- 13 Amino Acids, Proteins and DNA
- 14 Organic Synthesis
- 15 Nuclear Magnetic Resonance Spectroscopy
- 16 Chromatography
04 Required Practicals and Experimental Skills
- RP1 Volumetric Solution and Acid-Base Titration
- RP2 Measurement of an Enthalpy Change
- RP3 Effect of Temperature on Rate
- RP4 Test-Tube Reactions to Identify Cations and Anions
- RP5 Distillation of a Product from a Reaction
- RP6 Tests for Alcohol, Aldehyde, Alkene and Carboxylic Acid
- RP7 Rate by Initial Rate and Continuous Monitoring
- RP8 Measuring the EMF of an Electrochemical Cell
- RP9 pH Changes in Weak/Strong Acid-Base Reactions
- RP10 Preparation of a Pure Organic Solid and Liquid
- RP11 Identifying Transition Metal Ions in Solution
- RP12 Thin-Layer Chromatography
From the AQA A-Level Chemistry 7405 deck.
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Revision shouldn't mean spending hours working through content that never comes up, memorising pages of unnecessary detail, or wondering whether you're actually learning what examiners want.
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Based on a 2026 survey of 2,500 students who used StemUp for a minimum of 90 days. (Results vary by student)
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In case you were still wondering...
Everything you need to know about our mark scheme specific resources.
Free resources can look like the easy option, but many contain major errors.
Our subject experts have reviewed countless resources across exam boards
(including TES, Etsy, Knowunity, Brainscape and more) and repeatedly found
content inaccuracies, missing or incorrect mark scheme terminology, and
frequent spelling, punctuation and grammar mistakes.
StemUp resources go through rigorous exam-standard checks by our staff,
teachers, and former chief examiners.
No resource can ever guarantee A*s.
What we do guarantee is examiner-level, mark scheme specific precision
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Your final outcome still depends on your mindset, determination, and your
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We know every student revises differently, and we'd never want anyone to feel pushed into buying from us. But if you were to make our resources yourself, it would mean 100+ hours across 6,000+ pages of past papers, the specification, and official textbooks, without access to our unseen resources or notes from former chief examiners. We've done the heavy lifting so you can focus on learning.
