📚 Year 10 CAIE Chemistry: 2026 Exam Changes and Trends | CAIE IGCSE 化学：2026 考试变化与趋势
As the CAIE IGCSE Chemistry specification undergoes its most significant update for first examination in 2026, Year 10 students need a clear understanding of what has changed and how to prepare effectively. This article breaks down the new paper structure, content additions, assessment weightings, and practical assessment reforms, offering essential guidance for learners starting their IGCSE journey.
随着 CAIE IGCSE 化学大纲迎来 2026 年首次考试的重大更新，Year 10 学生需要清楚了解变化内容以及如何有效备考。本文详细解析新的试卷结构、新增内容、评估比重以及实验考核改革，为踏上 IGCSE 征程的学生提供重要指引。
1. Overview of the 2026 Syllabus Update | 2026 年大纲更新概览
From 2026, CAIE has introduced a refreshed IGCSE Chemistry syllabus (0620) with the aim of making assessment fairer, more accessible, and better aligned with modern chemistry education. The changes affect paper names, duration, content, and the way core and extended tiers are examined. The new syllabus was first available for teaching in September 2024, giving Year 10 students sufficient time to adapt.
从 2026 年起，CAIE 推出了更新的 IGCSE 化学大纲 (0620)，旨在使评估更加公平、更容易获得，并更好地与现代化学教育接轨。变化涉及试卷名称、时长、内容以及核心与扩展层级的考核方式。新大纲于 2024 年 9 月开始用于教学，为 Year 10 学生提供了充足的适应时间。
2. Paper Structure Reforms | 试卷结构改革
The most noticeable change is the unification of multiple-choice papers and the renaming of theory and practical components. Previously, Core and Extended candidates sat separate multiple-choice papers (Paper 1 and Paper 2). Now, all candidates take the same Paper 1 (Multiple Choice) and Paper 2 (Theory). The practical assessment also receives new paper codes.
最显著的变化是选择题试卷的统一以及理论与实验试卷的重命名。此前，核心和扩展考生分别参加不同的选择题试卷（Paper 1 和 Paper 2）。而现在，所有考生都参加相同的 Paper 1（选择题）和 Paper 2（理论题）。实验考核也获得了新的试卷代码。
| New Paper (2026) | Old Paper | Description |
|---|---|---|
| Paper 1 - Multiple Choice | Paper 1 (Core) / Paper 2 (Extended) | 45 min, 40 marks, all candidates |
| Paper 2 - Theory | Paper 3 (Core) / Paper 4 (Extended) | 1 h 15 min, 80 marks, all candidates |
| Paper 3 - Practical Test | Paper 5 | 1 h 15 min, 40 marks |
| Paper 4 - Alternative to Practical | Paper 6 | 1 h, 40 marks |
| 新试卷 (2026) | 旧试卷 | 说明 |
|---|---|---|
| Paper 1 - 选择题 | Paper 1 (核心) / Paper 2 (扩展) | 45 分钟, 40 分, 所有考生 |
| Paper 2 - 理论 | Paper 3 (核心) / Paper 4 (扩展) | 1 小时 15 分钟, 80 分, 所有考生 |
| Paper 3 - 实验操作考试 | Paper 5 | 1 小时 15 分钟, 40 分 |
| Paper 4 - 实验替代笔试 | Paper 6 | 1 小时, 40 分 |
3. Core vs. Extended: Revised Tier System | 核心与扩展：调整后的层级体系
Despite the unified papers, the tier system remains. Core candidates answer only those questions designated for the Core, while Extended candidates tackle the full set. The new Paper 1 contains 40 compulsory multiple-choice questions; Core students may be directed to answer a subset, but in practice the paper is designed so that Core candidates attempt all questions, with some labelled as Extension. The crucial rule stays: Core tier leads to grades C to G, and Extended tier to A* to E. Unclassified (U) applies to both.
尽管试卷统一了，层级体系依然存在。核心考生只回答标为核心的问题，扩展考生则要回答全部题目。新的 Paper 1 包含 40 道必答选择题；核心学生可能只需回答其中一部分，但实际上试卷设计使得核心考生仍会尝试所有题目，只是部分题目标注为扩展题。关键规则不变：核心层级可获得 C 至 G 等第，扩展层级可获得 A* 至 E。两者均可能得到不予评级 (U)。
4. New Topics and Content Additions | 新增课题与内容
The 2026 syllabus introduces contemporary themes to reflect advances in chemistry. Key additions include green chemistry and sustainable processes, nanoparticles and their applications, fuel cells, and the chemistry of climate change (e.g., carbon footprint). Some traditional topics have been streamlined, such as a reduced emphasis on industrial contact process details, making room for these modern concepts.
2026 年大纲引入当代主题以反映化学的进步。主要新增内容包括绿色化学与可持续工艺、纳米粒子及其应用、燃料电池以及与气候变化相关的化学（如碳足迹）。一些传统主题得到了精简，比如减少了对工业接触法制硫酸的详细要求，为这些现代概念腾出空间。
- Green chemistry principles and atom economy
- Nanoparticles: properties and uses
- Fuel cells (hydrogen-oxygen) in detail
- Life cycle assessment and carbon footprint
- Polymers: biodegradable and recycling
- 绿色化学原理与原子经济性
- 纳米粒子：性质与应用
- 燃料电池（氢-氧）详解
- 生命周期评估与碳足迹
- 聚合物：生物可降解与回收
5. Assessment Objective Weightings | 评估目标权重
The new syllabus refines the weightings for Assessment Objectives across the overall qualification. AO1 (Knowledge with understanding) accounts for 40% of the total marks, AO2 (Handling information and problem solving) for 40%, and AO3 (Experimental skills and investigations) for 20%. This shift slightly increases the emphasis on applying knowledge, as AO2 now matches AO1. Previously, AO1 had a slightly higher weighting.
新大纲调整了整体资格中评估目标的权重。AO1（知识与理解）占总分的 40%，AO2（信息处理与问题解决）占 40%，AO3（实验技能与探究）占 20%。这一变化略为提高知识应用的比重，因为 AO2 现在与 AO1 持平。此前，AO1 的权重稍高。
| Assessment Objective | Weighting (2026) | Typical Question Style |
|---|---|---|
| AO1 Knowledge with understanding | 40% | Recall, definitions, descriptions |
