IGCSE Science Practical in Singapore: Paper 5 and Paper 6 Guide
Cambridge IGCSE Biology 0610, Chemistry 0620, and Physics 0625 each include a practical assessment worth 20 % of the qualification. Candidates take either Paper 5, the Practical Test, or Paper 6, Alternative to Practical.[1][2][3]
Last reviewed: 20 August 2026 against the official 2026 to 2028 Cambridge syllabuses for Biology 0610, Chemistry 0620, and Physics 0625.
TL;DR
Paper 5 is a hands-on laboratory examination. Paper 6 is a written examination of practical skills. Both routes assess the same practical objectives and carry the same weighting. Your examination centre decides which component options it can offer, so confirm the entry before payment.
Current assessment facts
| Component | Format | Duration | Marks | Weighting |
| Paper 5 | Practical Test in a laboratory | 1 h 15 min | 40 | 20 % |
| Paper 6 | Alternative to Practical, written | 1 h | 40 | 20 % |
These timings, marks, and weightings are the same across the current Biology 0610, Chemistry 0620, and Physics 0625 syllabuses.[1][2][3]
Both components assess practical skills. Paper 6 does not ask the candidate to perform an experiment during the examination, but its questions still require understanding of apparatus, measurements, methods, data, and evaluation.
Which paper will a Singapore private candidate take?
Do not assume that all private candidates take Paper 6 or that Paper 5 will be available. A centre can only offer a Practical Test when it can meet Cambridge's laboratory, apparatus, supervision, and confidentiality requirements. Check the exact component offered in the live registration system or ask the examination centre before paying.
The Singapore private-candidate registration guide explains how to verify the session, syllabus code, and components.
Skills assessed in both routes
The current syllabuses group practical assessment around the ability to:
- use and describe techniques, apparatus, and materials safely;
- make and record observations and measurements;
- interpret and evaluate experimental observations and data;
- plan investigations and choose suitable methods; and
- draw conclusions while recognising limitations and suggesting improvements.[1][2][3]
Paper 6 presents these skills through written questions. Paper 5 assesses them through work performed in the laboratory.
Subject-specific preparation
Biology 0610
Prepare to work with biological observations, drawings, measurements, tables, graphs, investigations, and evaluation. Use the current syllabus to identify the practical contexts attached to each topic rather than memorising a fixed list of experiments.[1]
Chemistry 0620
Practise accurate observations, separation and measurement techniques, qualitative analysis, tables, graphs, planning, and evaluation. Learn the tests and observations listed in the current syllabus, including the supplied qualitative-analysis notes.[2]
Physics 0625
Practise setting up or interpreting apparatus, taking measurements, recording results, plotting and reading graphs, calculating from data, and evaluating methods. Use the current syllabus practical contexts to connect these skills to the physics topics.[3]
A practical revision routine
- Confirm the syllabus code, syllabus year, and component on the entry.
- Read the official practical-assessment objectives and notes in that syllabus.
- Attempt matching Paper 5 or Paper 6 past questions under the correct timing.
- Mark with the official mark scheme and classify each error as method, observation, data, graph, conclusion, or evaluation.
- Reattempt a similar task after correcting the underlying skill.
Hands-on experience can help candidates understand apparatus and realistic methods, even when they are preparing for Paper 6. Before relying on any tuition or laboratory provider, confirm the subject, equipment, supervision, schedule, and service scope directly with that provider. Those operational details can change and are not established by the Cambridge syllabuses.
Frequently asked questions
Is Paper 6 easier than Paper 5?
They use different formats but assess the same practical objectives and carry the same weighting. The better route depends on the component available and the candidate's preparation, not a universal difficulty ranking.
Does Paper 6 require laboratory work during the examination?
No. It is a written paper. Candidates still need to understand practical techniques, measurements, data, and evaluation.[1][2][3]
Can a private candidate take Paper 5?
Only if the examination centre offers the component and can provide the required laboratory arrangements. Confirm this with the centre before registration.
Are O-Level or A-Level practical timings the same?
No. This page covers only Cambridge IGCSE Biology 0610, Chemistry 0620, and Physics 0625. Check the current SEAB syllabus for Singapore-Cambridge O-Level or A-Level assessment details.
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