📚 AS CAIE Sciences: 2026 Exam Changes and Trends | AS CAIE 科学：2026年考试变化与趋势
The Cambridge AS Level sciences are evolving, and 2026 brings a fresh wave of syllabus refinements that every student and teacher should understand. From updated assessment objectives to a stronger emphasis on practical inquiry, the changes reflect Cambridge’s commitment to 21st-century scientific literacy. This article explores the key shifts in Physics, Chemistry, and Biology for the 2026 examination series, breaking down new content, assessment structures, and the trends shaping future papers.
剑桥 AS 阶段的科学科目正在逐步演变，2026 年将迎来一轮新的考纲调整，每位学生和教师都有必要深入了解。从更新的评估目标到对实践探究的更高要求，这些变化体现了剑桥致力于培养 21 世纪科学素养的决心。本文将探讨 2026 年考季物理、化学和生物的关键转变，分析新增内容、评估结构以及影响未来试卷的趋势。
1. Latest Syllabus Codes and Validity Period | 最新考纲代码与有效期限
All three core sciences now operate under revised syllabuses effective from 2025 to 2027. Physics follows 9702, Chemistry 9701, and Biology 9700. The 2026 exams are firmly rooted in these documents, meaning any previous syllabus editions (e.g. 2022–2024) are no longer valid for candidates sitting in 2026.
三门核心科学科目均采用 2025 至 2027 年生效的修订版考纲。物理使用代码 9702，化学 9701，生物 9700。2026 年考试完全依据这些文件，意味着之前版本（如 2022–2024 年）的考纲对 2026 年考生已不再适用。
The syllabuses have been restructured for clarity, with content divided into key topics and sub-topics that align more closely with the progression from AS to A Level. Teachers should ensure they are using the most recent PDFs from the Cambridge website, as some learning outcomes have been reworded or shifted between AS and A Level components.
考纲经过重新编排后更加清晰，内容按关键主题和子主题划分，更贴合从 AS 到 A Level 的进阶节奏。教师应确保使用剑桥官网上的最新 PDF 版本，因为部分学习目标已在 AS 和 A Level 模块之间被改写或重新分配。
2. Shift Towards Skills-Based Assessment | 转向以技能为核心的评估
The weightings of Assessment Objectives (AOs) have been subtly adjusted. AO2 (Handling, applying and evaluating information) and AO3 (Experimental skills and investigations) now carry greater significance across all three sciences. This means students must move beyond recall and demonstrate the ability to interpret unfamiliar data, design experiments, and evaluate methodologies.
评估目标（AO）的权重已做出微调。AO2（处理、应用和评估信息）与 AO3（实验技能与探究）在三门科学中都占据了更重要的地位。这意味着学生不能仅靠记忆，还需展示解读陌生数据、设计实验和评价方法的能力。
In Physics, for instance, there is increased focus on uncertainty calculations and graphical analysis. Chemistry papers require more evaluation of procedures, while Biology candidates must be comfortable with statistical tests like the chi-squared test and t-test, interpreting p-values and confidence limits.
以物理为例，不确定度计算和图像分析的分量加大。化学试卷更强调对实验步骤的评价，而生物考生则需要熟练运用卡方检验和 t 检验等统计方法，正确解读 p 值及置信区间。
3. Practical Endorsement and Paper 3 Overhaul | 实践认证与卷三的重大调整
While the Practical Endorsement remains a separate certification in some regions, the Paper 3 Advanced Practical Skills for sciences has been refined. In 2026, the exam will feature more open-ended investigations rather than purely prescriptive tasks. Candidates may be asked to suggest modifications, identify sources of error, and write conclusions based on their own data.
尽管实践认证在某些地区仍为单独颁发的证书，但科学卷三（高级实验技能）已经过细化。2026 年的考试将包含更多开放式的探究任务，而非单纯照方抓药的实验。考生可能会被要求提出改进建议、指出误差来源，并根据自己的数据撰写结论。
For Chemistry, titration and qualitative analysis remain core, but there is now a greater expectation that students can plan a short investigation. Biology practicals increasingly involve microscopy, biological drawing, and the use of potometers or respirometers, with emphasis on controlled variables and repeatability.
化学中，滴定与定性分析仍是核心，但如今对考生规划简单探究活动的期望更高。生物实验则越来越多地涉及显微镜操作、生物绘图以及蒸腾计或呼吸计的使用，对控制变量和重复性的要求也更加突出。
4. Updated Content – Physics 9702 Highlights | 内容更新——物理 9702 亮点
The 2025–2027 Physics syllabus introduces a greater depth of treatment for certain AS topics. Waves, superposition, and quantum phenomena show refined learning outcomes. Students are now expected to describe the photoelectric effect in terms of photon energy and work function, using the equation E = hf and the concept of threshold frequency.
2025–2027 年物理考纲对部分 AS 主题的处理更为深入。波动、叠加及量子现象的学习目标都有细化。学生现在需要根据光子能量和逸出功来描述光电效应，运用公式 E = hf 以及阈频率的概念。
Another change is the inclusion of gravitational and electric field concepts earlier in the AS course, preparing learners for A2 ideas. Kinematics equations are now explicitly listed, and students must be able to derive them from velocity–time graphs, not just memorize them.
另一变化是引力场和电场概念在 AS 阶段提前引入，为 A2 的学习做好铺垫。运动学方程现在被明确列出，学生必须能够根据速度–时间图像推导这些公式，而不仅仅是死记硬背。
5. Updated Content – Chemistry 9701 Highlights | 内容更新——化学 9701 亮点
Organic chemistry at AS level now includes a stronger emphasis on reaction mechanisms. The syllabus explicitly requires the use of curly arrows to show electron movement in nucleophilic substitution and electrophilic addition, as well as an understanding of homolytic and heterolytic fission.
AS 阶段的有机化学现在更加强调反应机理。考纲明确要求使用弯箭头来表示亲核取代和亲电加成中的电子移动，并且要求理解均裂和异裂。
Energetics has been expanded to include lattice energy through Born–Haber cycles for simple ionic compounds. Students must construct cycles and calculate lattice enthalpy, linking it to ionic size and charge trends. The mole and stoichiometry remain fundamental, with an increased focus on back-titration calculations.
能量学部分得到扩展，包括了通过玻恩–哈伯循环计算简单离子化合物的晶格能。学生需要构建循环并计算晶格焓变，并将其与离子大小和电荷趋势相联系。物质的量与化学计量依然为基础内容，但返滴定计算的比重有所上升。
6. Updated Content – Biology 9700 Highlights | 内容更新——生物 9700 亮点
AS Biology now integrates more molecular genetics. The structure of DNA and RNA, semi-conservative replication, and the genetic code are covered with greater precision. Students must be able to relate base sequences to amino acid sequences and outline the process of transcription and translation.
AS 生物如今整合了更多分子遗传学内容。DNA 和 RNA 的结构、半保留复制以及遗传密码的讲授更加精确。学生必须能够将碱基序列与氨基酸序列关联起来，并概述转录和翻译过程。
Cell membranes and transport mechanisms have also been updated, requiring the interpretation of fluid mosaic models and understanding of factors affecting permeability. Epidemiology and disease, including infectious diseases such as TB and malaria, now feature more case-study style questions linking to global health.
细胞膜与运输机制也已更新，要求解读流动镶嵌模型，并理解影响膜通透性的因素。流行病学与疾病，包括结核病和疟疾等传染病，如今更常以案例研究题的形式出现，将知识点与全球健康议题联系起来。
7. Increased Use of Data Analysis and Graphs | 数据分析与图表题比重上升
All three papers now frequently present candidates with unfamiliar data sets, demanding interpretation, calculation of rates, and construction of graphs. The ability to plot best-fit lines, identify anomalous points, and calculate gradients is essential. Physics may include logarithmic plots, while Biology routinely requires bar charts and scattergrams with error bars.
如今所有三门科目的试卷都频繁给出陌生数据集，要求考生解读数据、计算速率并绘制图表。绘制最佳拟合线、识别异常点并计算斜率是必备技能。物理可能涉及对数坐标图，生物则常规性地要求绘制带误差棒的条形图和散点图。
Chemistry questions expect students to process titration results, calculate mean titres, and apply significant figure rules correctly. There is a clear trend toward rewarding precise data handling and the ability to discuss reliability, accuracy, and precision in experimental contexts.
化学题目期望考生处理滴定结果、计算平均滴定体积并正确运用有效数字规则。一个明显的趋势是，准确的数字处理能力以及在实验情境下讨论可靠性、准确度和精密度的能力将得到更多分数。
8. Mathematical Requirements Across Sciences | 数学要求在科学科目中的体现
The mathematical demands have been standardized across the sciences. Below is a summary of the most frequently applied skills:
各科学科目的数学要求已经标准化。以下是最常运用到的技能汇总：
| Skill / 技能 | Physics / 物理 | Chemistry / 化学 | Biology / 生物 |
|---|---|---|---|
| Rearrange equations / 方程变形 | Heavy use | Moderate | Moderate |
| Significant figures / 有效数字 | Always | Always | Always |
| Logarithms & exponentials | Common | Rare | Absent |
| Graphical gradients / 图像梯度 | Essential | Common | Common |
| Statistical tests / 统计检验 | Standard deviation | Mean & range | Chi-squared, t-test |
In 2026 exams, marks are explicitly allocated for mathematical working, so candidates must show full steps. A correct final answer without supporting method will not earn full credit.
在 2026 年的考试中，数学计算过程明确分配分数，因此考生必须展示完整步骤。没有推导过程的正确答案将无法获得满分。
9. Sustainability and Real-World Contexts | 可持续性与真实世界情境
A notable trend is the embedding of United Nations SDGs (Sustainable Development Goals) into science questions. Chemistry exams now feature green chemistry principles, such as atom economy and alternative fuels. Physics includes renewable energy, efficiency, and climate-related data interpretation. Biology regularly covers conservation, biodiversity loss, and ecosystem management.
一个显著的趋势是将联合国可持续发展目标（SDGs）融入科学考题。化学试卷中出现绿色化学原理，如原子经济性和替代燃料。物理涉及可再生能源、效率以及气候相关数据的解读。生物则经常涉及保护、生物多样性丧失和生态系统管理。
Questions are often framed around real-world issues, such as the chemistry of atmospheric pollutants or the physics of photovoltaic cells. This contextualisation not only assesses knowledge but also encourages students to link their learning to global challenges, aligning with Cambridge’s educational vision.
题目常常围绕现实议题展开，如大气污染物的化学原理或光伏电池的物理原理。这种情境化设计不仅考核知识，还鼓励学生将所学与全球挑战联系起来，与剑桥的教育愿景一脉相承。
10. Assessment Format and Paper Structure Stability | 评估形式与试卷结构的稳定性
While content has evolved, the overall paper structure for AS sciences remains stable in 2026. Each subject maintains a multiple-choice paper (Paper 1), a structured-theory paper (Paper 2), and a practical paper (Paper 3). The duration and marks have not changed drastically, though the distribution of topics within Paper 2 has been rebalanced to reflect the new syllabus priorities.
尽管内容有所演变，2026 年 AS 科学的整体试卷结构保持稳定。各科仍然保有选择题卷（卷一）、结构化理论卷（卷二）和实验卷（卷三）。考试时长和总分未发生剧烈变化，但卷二内各主题的分值分布已重新平衡，以体现新考纲的重点。
Candidates must consult the latest specimen papers to understand the style of questioning. Cambridge has released updated specimens that mirror the 2026 standard, complete with mark schemes that reveal a sharper focus on precise terminology and logical reasoning.
考生必须查阅最新的样题以了解出题风格。剑桥已发布反映 2026 年标准的更新版样题，并配有评分方案，清晰地展现出对准确术语和逻辑推理的更高要求。
11. Preparing for 2026 – Key Strategies | 备战 2026——关键策略
To excel in the 2026 exams, students should develop an integrated revision plan. Start by downloading the latest syllabus guide and using it as a checklist. Actively engage with past papers from 2025 onwards, as earlier papers may align with outdated specifications.
要在 2026 年考试中脱颖而出，学生应制定整合式的复习计划。首先下载最新考纲指南，并将其用作自查清单。积极演练 2025 年及以后的真题，因为更早的试卷可能与已废止的考纲相吻合。
Create a glossary of command words such as ‘explain’, ‘suggest’, and ‘evaluate’, and practice tailoring answers to the exact demands of each. For practical papers, simulate experiments at home or in the lab and write up full reports including risk assessments and systematic error analysis.
制作一份指令词术语表，例如“解释”“提出”“评价”，并练习如何精准针对每一种要求作答。对于实验卷，可在家里或实验室中模拟实验，并撰写完整报告，包括风险评估和系统误差分析。
12. Implications for A Level Progression | 对 A Level 进阶的影响
The 2026 AS sciences act as a rigorous stepping stone to the full A Level. Skills honed at AS, such as graph plotting, practical planning, and mathematical applications, directly impact performance in A2 papers. The continuity between AS and A Level has been reinforced, with many A2 questions drawing on fundamental concepts introduced in the first year.
2026 年 AS 科学是通往完整 A Level 的重要阶梯。在 AS 阶段磨炼的技能，如图形绘制、实验设计和数学应用，会直接影响 A2 试卷的表现。AS 和 A Level 之间的衔接已得到强化，许多 A2 考题都会借助第一年所介绍的基本概念。
Universities and employers continue to regard a strong AS performance as evidence of analytical and investigative ability. The 2026 changes, with their heightened focus on practical reasoning and real-world application, ensure that Cambridge qualifications remain globally respected and intellectually demanding.
大学和雇主依然将 AS 阶段的优秀成绩视为具备分析和探究能力的证明。2026 年的变化着意强化了实践推理和现实应用，确保剑桥资质在全球范围内既备受尊重又充满学术挑战。
Published by TutorHao | Sciences Revision Series | aleveler.com
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