IGCSE Chemistry 0620
IGCSE Chemistry 0620 practice on Quiz Portal brings topical questions, timed mock papers and worked explanations together in one place. Use it alongside IGCSE Chemistry Past Papers to find your weak topics, then keep practising until the syllabus feels familiar.
Particles, bonding, reactions, acids and salts, the Periodic Table and organic chemistry, with a strong focus on experimental technique.
Weighting by paper. Some papers are alternatives (for example Core or Extended, or practical or alternative to practical), so the figures add up to more than 100%.
- Paper 2 Multiple Choice (Extended)30%
- Paper 4 Theory (Extended)50%
- Paper 5 Practical Test20%
- Paper 6 Alternative to Practical20%
IGCSE Chemistry 0620: What Is Assessed
4 components on the Extended tier. Question formats: multiple choice, short answer, structured, practical, alternative to practical.
40 compulsory four-option multiple-choice items on the Core and Supplement content, testing AO1 and AO2; grades A* to G.
What the paper looks like
40 one-mark, four-option items in 45 minutes on Core and Supplement content. Expect more mole calculations, bond energies, equilibrium shifts, half-equations and oxidation numbers than Paper 1. Distractors are built on common slips (wrong mole ratio, missing ×2, reversed sign), so check each step.
Compulsory short-answer and structured questions on the Core and Supplement content, testing AO1 and AO2; grades A* to G.
What the paper looks like
80 marks in 1 hour 15 minutes, all compulsory, typically six or seven structured questions of 5–17 marks. Includes multi-step mole calculations (show working), symbol and ionic equations with state symbols, half-equations, dot-and-cross diagrams, displayed formulae and explanations using particles, bonding, collision theory or equilibrium.
Laboratory practical test (AO3) based on the experimental skills in Section 4: a quantitative experiment, a qualitative analysis exercise and a planning question.
What the paper looks like
40 marks in 1 hour 15 minutes in the laboratory. Usually a quantitative experiment (about 20 marks: readings in a table, a graph, a calculation and evaluation), a qualitative analysis exercise using the notes for qualitative analysis (about 14 marks), and a short planning question (about 6 marks).
Written paper (AO3) on the same experimental skills as Paper 5, using supplied readings, diagrams and observations instead of laboratory work.
What the paper looks like
40 marks in 1 hour with no lab work. Typically a short apparatus or technique question, a long data question (reading burettes, thermometers or stop-watches from diagrams, completing a table, plotting a graph, interpolating and evaluating), a qualitative analysis question using the supplied notes, and a 6-mark planning question.
Assessment overview
From the 2026–2028 syllabus. Checked against the Cambridge syllabus
| Assessment objective | IGCSE weighting |
|---|---|
| AO1 Knowledge with understanding | 50% |
| AO2 Handling information and problem-solving | 30% |
| AO3 Experimental skills and investigations | 20% |
Changes in this syllabus version
- Version 2 (published August 2026): the Assessment overview page was updated; the subject content is unchanged.
- No substantial changes affecting teaching compared with the 2023–2025 syllabus: the same six papers, durations, marks and weightings.
- The “Equality and inclusion” section of the syllabus was rewritten as “Accessibility and equality”.
- Textbooks endorsed for examination from 2023 remain suitable.
Command words used in Chemistry papers (22)
- Analyse
- examine in detail to show meaning, picking out elements and how they relate
- Calculate
- work out an answer from the given facts, figures or information
- Compare
- say or comment on how things are alike and/or different
- Consider
- review the information given and respond to it
- Contrast
- say or comment on how things are different
- Deduce
- reach a conclusion from the information available
- Define
- give the precise meaning
- Demonstrate
- show how, or give an example
- Describe
- state the points of a topic or give its main features and characteristics
- Determine
- establish an answer using the information available
- Discuss
- write about an issue or topic in depth, in a structured way
- Evaluate
- judge or calculate the quality, importance, amount or value of something
- Examine
- investigate closely and in detail
- Explain
- give purposes or reasons, make relationships clear, say why and/or how, supported by evidence
- Give
- produce an answer from a given source or from recall
- Identify
- name, select or recognise
- Justify
- support a case with evidence or argument
- Predict
- suggest what may happen, based on the information available
- Show (that)
- give structured evidence that leads to a stated result
- Sketch
- make a simple freehand drawing showing the key features, with care over proportions
- State
- express in clear terms
- Suggest
- apply knowledge to a situation with several valid answers, putting forward proposals or considerations
Examiner guidance from recent reports (13)
Topic map
Practice types
Free sample questions
The table shows the melting points and boiling points of four substances. [table] Which substance is a gas at…
| substance | melting point / °C | boiling point / °C |
|---|---|---|
| W | −210 | −196 |
| X | −7 | 59 |
| Y | 44 | 280 |
| Z | −117 | 18 |
- W
- X
- Y
- Z
Answer: D. Z
A substance is a liquid between its melting point and its boiling point. Z boils at 18 °C, so it is a gas at 25 °C, and −20 °C lies between −117 °C and 18 °C, so it is a liquid there. X is a liquid at 25 °C (and a solid at −20 °C); W is a gas at both temperatures; Y is a solid at both.
Equal amounts of four gases are released together at one end of a long glass tube at the same temperature.…
- carbon dioxide, CO₂
- chlorine, Cl₂
- methane, CH₄
- nitrogen dioxide, NO₂
Answer: C. methane, CH₄
At the same temperature, particles with a lower relative molecular mass move faster on average, so they diffuse faster. Mᵣ: CH₄ = 16, CO₂ = 44, NO₂ = 46, Cl₂ = 71. Methane has the lowest Mᵣ and arrives first.
FAQs
Are these official 0620 past-paper questions?
No. They are original questions written to match the Chemistry syllabus topics. Official past papers are available to schools through Cambridge.
Why choose an exam year?
Cambridge updates syllabuses periodically. Your exam year selects the matching configuration so topics and components follow the right version.
Is a calculator allowed?
In this configuration a scientific calculator is permitted for the listed papers. Check your syllabus for the exact rule.
IGCSE Chemistry 0620 FAQs
What is IGCSE Chemistry 0620?
IGCSE Chemistry 0620 is Quiz Portal's free practice hub for this Cambridge syllabus: topical questions, MCQs, timed mock papers and worked explanations.
Is IGCSE Chemistry 0620 free on Quiz Portal?
Yes. Every practice question, quiz and mock on Quiz Portal is free, and you can start without creating an account. A free student account is optional and only saves your progress.
How do I practise IGCSE Chemistry 0620?
Open a topic from the topic map to practise it, or start a timed mock paper to rehearse the exam. Review the worked explanations, then repeat weak topics.
Are the IGCSE Chemistry 0620 questions official?
No. Quiz Portal is independent and is not affiliated with Cambridge International or College Board. The questions are original and written in the style of the real exams. Official papers are available from the exam board.
Where can I find IGCSE Chemistry Past Papers?
Open IGCSE Chemistry 0620 above to start practising IGCSE Chemistry Past Papers. Open a topic from the topic map to practise it, or start a timed mock paper to rehearse the exam. Review the worked explanations, then repeat weak topics.