Cambridge International A Level Chemistry Exam Technique Cheat Sheet 2026 (9701)
Every Cambridge International A Level Chemistry command word decoded — what examiners actually want, the structure that earns full marks, the top mistakes flagged in real examiner reports, and the phrases that pick up the marks others leave on the table. Free printable PDF.
6 command words decoded
5 top mistakes flagged
Phrases that earn marks
Print-ready PDF
Command words — click to expand
Top tips for Chemistry
- 1Curly arrows: ALWAYS from lone pair / bond TO atom / electrophile. Never from atom to lone pair.
- 2Show ICE tables for every Kc / Kp question — examiners reward the structured approach.
- 3Quote enthalpy changes WITH units (kJ/mol) and SIGN (+ for endothermic, − for exothermic).
- 4Label every chiral centre with a star (*) when discussing optical isomerism.
- 5Periodic trend questions: always justify with shielding / nuclear charge / atomic radius.
⚠️ Top mistakes examiners flag for Chemistry
- ✗Curly arrows drawn the wrong way (atom to lone pair instead of lone pair to atom).
- ✗Forgetting the sign or units on ΔH values.
- ✗Confusing Kc and Kp (Kc uses concentrations, Kp uses partial pressures).
- ✗Stating 'electrons' instead of the specific orbital (e.g. 2p orbital).
- ✗Forgetting state symbols on chemical equations.
✅ Phrases that earn marks
- → …nucleophilic attack by the lone pair on the carbonyl carbon
- → …using Hess's law (ΔH₁ = ΔH₂ + ΔH₃)
- → …the equilibrium shifts to oppose the change (Le Chatelier's principle)
- → …SN2 mechanism with backside attack
- → …the rate-determining step involves…
❌ Phrases that lose marks
- ✗ Electrons attack (say: lone pair attacks)
- ✗ The reaction is fast (say: the rate is increased by…)
- ✗ It gets cold (say: the reaction is endothermic, absorbing energy)
- ✗ Forgetting sign / units on ΔH
Extended answers are where the marks live in Chemistry
Cambridge International A Level Chemistry 6-mark and extended-response questions are won or lost on STRUCTURE and command-word interpretation. A Tutopiya Chemistry specialist marks your mock answers like an examiner and shows you exactly which command words you're misreading. Submit a free enquiry to get matched.
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Cambridge International A Level Chemistry exam technique — FAQ
What are the most important command words in Cambridge International A Level Chemistry? ▼
Cambridge International A Level Chemistry (9701) papers use 6 core command words. The most frequently misread are Define (with units) (where students add unnecessary explanation) and Explain (mechanism) (where students describe instead of reasoning with because/therefore). The full breakdown — what each word means, the answer structure, and the do/don't list — is in the interactive cheat sheet above.
What's the difference between "describe" and "explain" in Cambridge International A Level Chemistry? ▼
Describe asks WHAT happens — quote values from data, state the trend, no reasoning. Explain asks WHY — every sentence must contain "because", "therefore" or "as a result". Mixing them up is one of the highest-frequency reasons Cambridge International A Level Chemistry students lose marks they could have earned with the same content.
What are the top examiner-flagged mistakes for Cambridge International A Level Chemistry? ▼
Across recent Cambridge International A Level Chemistry examiner reports, the most-flagged mistakes are: Curly arrows drawn the wrong way; Forgetting the sign or units on ΔH values.; Confusing Kc and Kp. The full list with explanations is in the "Top mistakes" block in the cheat sheet above.
Can I print the Cambridge International A Level Chemistry exam technique cheat sheet as a PDF? ▼
Yes — click the "Download Chemistry Cheat Sheet PDF" button above. Sign up free (no payment), and the printable A4 PDF downloads instantly. The PDF includes the command-word table, top tips, common mistakes and the earn/avoid phrase pairs — designed to fit on one page so you can pin it above your desk.
Will this cheat sheet help me get a top grade in Cambridge International A Level Chemistry? ▼
The cheat sheet covers EXAM TECHNIQUE — how to read command words, structure answers, and use mark-scheme language. Combined with strong subject knowledge it can lift students by 1–2 grades by closing the gap on extended-response questions. Use the Cambridge International A Level Chemistry Grade Predictor to see where you currently sit and how many marks you need for the next grade up.
Is this Cambridge International A Level Chemistry cheat sheet free? ▼
Yes — fully free. Sign up takes 10 seconds (name + email) and unlocks the PDF download for this and every other Tutopiya study tool. We use the email to send occasional Cambridge International A Level Chemistry revision resources and exam updates. Unsubscribe at any time.
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