All exam insights

CHEMISTRY-II · 2021

Chemistry II

Official KICE examination materials and examiner commentary for Chemistry II (2021). Refer to the board portal for the latest published reports.

Source: KICE

Last reviewed: 2026-06-30Paraphrased for study purposes — not an official publication of the exam board.

Cohort performance

Session statistics from official examination reports

No data available in official reports

Key examiner messages

Top priorities from the principal examiner before you revise

No data available in official reports

Question difficulty map

How candidates performed on each question in this series

No data available in official reports

Assessment objectives

Skill and AO weighting from official examiner commentary

No data available in official reports

Method marks watchlist

Where working, steps, or method marks were commonly lost

No data available in official reports

Recurring mistakes across years

Themes examiners flag in multiple recent sessions for this subject

Equilibrium: Answering from memory before checking the condition in the stem. — Underline the limiting condition and restate it in your o…

2024 20242023 20232022 20222020 20204 sessions

Kinetics: Treating a familiar source, graph, or scenario as identical to a past EBS example. — Compare variables and wording; transformed…

2024 20242023 20232022 20222020 20204 sessions

Electrochemistry: Losing marks on easy items because time was spent on one high-difficulty question. — Use a two-pass strategy and mark u…

2024 20242023 20232022 20222020 20204 sessions

Organic chemistry: Eliminating options based on a keyword match rather than the full causal relationship. — Check subject, time period, d…

2024 20242023 20232022 20222020 20204 sessions

Question choice intelligence

Mean scores and popularity for optional questions (HKDSE electives)

No data available in official reports

Level exemplars

What candidate scripts at each grade level looked like

No data available in official reports

Grade & admission context

How marks relate to grade thresholds and entry standards

No data available in official reports

Deep insights

What top candidates did

Techniques and approaches examiners rewarded in this series

No data available in official reports

Command word playbook

How to match each command word to the expected response style

No data available in official reports

Time traps

Sections where candidates spent disproportionate time relative to marks

No data available in official reports

Syllabus traceability

Topics linked to questions and mark weighting in this session

No data available in official reports

MCQ trap analytics

Commonly chosen wrong options from examiner commentary

No data available in official reports

Topic heatmap across years

Mark concentration by topic and exam year for this subject

Mark intensity

LowHigh
Topic
2020
2021
2022
2023
2024
Σ

Chemical equilibrium, Le Chatelier principle, acid-base equilibrium, buffers

15
15
15
15
15
75

Organic chemistry, polymers, materials, and molecular structure

13
13
13
13
13
65

Thermochemistry, entropy/free energy, reaction rates, and catalysts

12
12
12
12
12
60

Electrochemistry: cells, electrolysis, redox potentials

10
10
10
10
10
50

Difficulty trend

How session difficulty has shifted across recent years

20202021202220232024
2020 2020 · 4.0/52021 2021 · 4.0/52022 2022 · 4.0/52023 2023 · 4.0/52024 2024 · 4.2/5

Paper comparison

Marks and duration breakdown across papers in this session

No data available in official reports

Marks you can still earn

Where valid approaches outside the mark scheme may still gain credit

No data available in official reports

Practise what examiners flagged

Target weak topics from this report inside the Revui app

No data available in official reports

Self-diagnostic checklist

Key actions before you sit this paper — copy and tick off as you revise

  • 1Pitfall

    Equilibrium: Answering from memory before checking the condition in the stem. — Underline the limiting condition and restate it in your o…

  • 2Pitfall

    Kinetics: Treating a familiar source, graph, or scenario as identical to a past EBS example. — Compare variables and wording; transformed…

  • 3Pitfall

    Electrochemistry: Losing marks on easy items because time was spent on one high-difficulty question. — Use a two-pass strategy and mark u…

  • 4Pitfall

    Organic chemistry: Eliminating options based on a keyword match rather than the full causal relationship. — Check subject, time period, d…

Teacher briefing pack

One-page session summary for tutors and classroom review

2021 2021

Chemistry II

Official KICE examination materials and examiner commentary for Chemistry II (2021). Refer to the board portal for the latest published reports.

  • Equilibrium: Answering from memory before checking the condition in the stem. — Underline the limiting condition and restate it in your o…

  • Kinetics: Treating a familiar source, graph, or scenario as identical to a past EBS example. — Compare variables and wording; transformed…

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