How is the 2025 H2 Chemistry Paper 4 practical structured?

Paper 4 runs for 2 h 30 min, carries 50 marks, and is weighted at 20% of the H2 grade. Candidates rotate through linked tasks that span Planning, Manipulation & Measurement, Presentation of Data, and Analysis, Conclusions & Evaluation.

Will qualitative analysis notes still be provided?

Yes. The question paper supplies the latest qualitative analysis notes, but you must decide which reagents, confirmatory tests, and washes to deploy under time pressure.

What practical techniques should I expect?

Expect titrations, thermochemistry, kinetics, gravimetric work, and instrumental observations alongside data-handling questions that check spreadsheet fluency.

How do tutors support labs without full apparatus?

We simulate Paper 4 workflows with micro-scale setups, video walkthroughs, and structured uncertainty write-ups so you can practise MMO and ACE responses even when equipment is limited.

H2 Chemistry Experiments

Qualitative analysis routines, titration technique, and evaluation frameworks for H2 chemistry practicals.

Prep resources

The MOE 2025 Pre-University Chemistry syllabus confirms it applies from the 2025 JC1 intake—whose H2 practical runs in 2026—so its Paper 4 specification now governs current candidates.

Paper 4 runs for 2 h 30 min, carries 50 marks, and contributes 20 % of the H2 grade.

Candidates must plan defensible methods, carry out precise volumetric and instrumental work, and present conclusions with quantitative justification.

Paper 4 examines the following components:

Planning (P)
Manipulation, Measurement and Observation (MMO)
Presentation of Data and Observations (PDO)
Analysis, Conclusions and Evaluation (ACE)

Paper 4 covers titrations, thermochemistry, kinetics, gravimetric analysis, qualitative inorganic and organic probes, and data analysis items that may not require live apparatus.

Planning prompts alone weigh roughly 4 % of the marks, so structured method statements matter alongside accurate MMO execution.

Exam format at a glance

Paper	Duration	Marks / weighting	What to expect
Paper 4 Practical	2 h 30 min	50 marks (20% of H2 grade)	Multi-part investigation assessing Planning (P), MMO, PDO, ACE through volumetric, instrumental, and data-analysis tasks.

Key lab expectations

Frame Planning responses that compare titration routes, articulate safety controls, and define acceptable measurement tolerances.
Execute MMO steps quickly—standardising solutions, tracking temperature changes, and calibrating instrumentation without wasting reagent volume.
Present PDO outputs with stoichiometric working, balanced equations, and molar conversions laid out clearly.
Deliver ACE commentary that quantifies percentage error, reconciles anomalies, and recommends refinements rooted in chemical principles.

Our walkthroughs translate those requirements into pre-lab briefings, observation layouts, and evaluation prompts so you can rehearse Paper 4 accuracy thresholds and uncertainty commentary before seeking tutor feedback.

Frequently Asked Questions

How is the 2025 H2 Chemistry Paper 4 practical structured?
Paper 4 runs for 2 h 30 min, carries 50 marks, and is weighted at 20% of the H2 grade. Candidates rotate through linked tasks that span Planning, Manipulation & Measurement, Presentation of Data, and Analysis, Conclusions & Evaluation.
Will qualitative analysis notes still be provided?
Yes. The question paper supplies the latest qualitative analysis notes, but you must decide which reagents, confirmatory tests, and washes to deploy under time pressure.
What practical techniques should I expect?
Expect titrations, thermochemistry, kinetics, gravimetric work, and instrumental observations alongside data-handling questions that check spreadsheet fluency.