AQA CH04 International Chemistry Unit 4: Further Physical & Organic Chemistry Revision Guide | AQA国际化学第四单元：高等物理与有机化学复习指南

📚 AQA CH04 International Chemistry Unit 4: Further Physical & Organic Chemistry Revision Guide | AQA国际化学第四单元：高等物理与有机化学复习指南

This article is a comprehensive revision guide for AQA International A-level Chemistry Unit 4 (CH04), covering the core topics examined in the June 2023 paper: rate equations, Arrhenius, equilibrium constants, acid-base equilibria, buffers, carbonyl chemistry, carboxylic acid derivatives, amines, polymers, and structure determination.

本文是AQA国际A-level化学第四单元（CH04）的综合复习指南，涵盖2023年6月试卷的核心考点：反应速率方程、阿伦尼乌斯方程、平衡常数、酸碱平衡、缓冲溶液、羰基化合物、羧酸衍生物、胺、聚合物以及结构鉴定。

1. Exam Format and Assessment Objectives | 考试形式与考核目标

CH04 is a written paper lasting 2 hours, worth 90 marks, and contributes 20% of the International A-level. It tests AO1 (knowledge with understanding), AO2 (application of knowledge), and AO3 (analysis, evaluation, and practical skills) through a mix of multiple-choice, short-answer, and extended response questions.

CH04为笔试，时长2小时，满分90分，占国际A-level总成绩的20%。试卷通过选择题、简答题和拓展题考查AO1（知识理解）、AO2（知识应用）和AO3（分析、评价与实践技能）。

The paper includes a periodic table insert but no full data booklet, so key constants such as the gas constant R and the ionic product of water Kw are provided within questions where needed. You should still memorise common equations and definitions.

试卷附带元素周期表插页，但不提供完整数据手册，因此气体常数R和水的离子积Kw等关键常数会在题目中按需给出。你仍应熟记常见方程式和定义。

Time management is critical: aim for about 1.3 minutes per mark, and reserve 5–10 minutes at the end to check calculations and significant figures.

时间管理至关重要：争取每题约1.3分钟，并预留5–10分钟检查计算和有效数字。

2. Rate Equations and Reaction Orders | 速率方程与

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