📚 KS3 CIE Chemistry: Summer Preview and Bridging Course | KS3 CIE 化学：暑期预习与衔接课程
The summer break offers an excellent opportunity for students to prepare for the challenges of KS3 CIE Chemistry. This bridging course is designed to introduce key concepts, safety practices, and practical skills that will form the foundation of your secondary school chemistry studies. By previewing these topics, you can enter the classroom with confidence and a real curiosity about the material world.
暑期假期为学生提供了备战 KS3 CIE 化学的绝佳机会。本衔接课程旨在介绍核心概念、安全规范和实验技能，为中学化学学习打下坚实基础。通过预习这些主题，你将信心满满地走进课堂，并对物质世界充满好奇。
1. Welcome to KS3 Chemistry | 欢迎来到 KS3 化学
Chemistry is often called the ‘central science’ because it connects physics with biology and earth science. In KS3, you will begin to explore what everything around you is made of, from the air you breathe to the screen you are reading.
化学常被称为“中心科学”，因为它连接了物理与生物以及地球科学。在 KS3 阶段，你将开始探索周围一切的组成，从呼吸的空气到正在阅读的屏幕。
You will learn to think like a scientist: asking questions, making predictions, conducting experiments and analysing results. This course will give you a head start by introducing the core ideas and building your confidence.
你将学会像科学家一样思考：提出问题、作出预测、进行实验和分析结果。本课程将通过介绍核心概念并建立你的信心，让你占得先机。
One of the most exciting parts of chemistry is the hands-on lab work. But before that, we need to understand safety rules — the first topic of any science course.
化学最令人兴奋的部分之一是动手实验。但在此之前，我们需要了解安全规则——这是任何科学课程的第一课。
2. Laboratory Safety First | 实验室安全优先
Before entering any chemistry lab, you must know the essential safety rules. Safety is the foundation of all practical work and helps prevent accidents.
进入任何化学实验室之前，你必须了解基本的安全规则。安全是一切实验工作的基础，有助于预防事故。
Always wear safety goggles and a lab coat. Tie back long hair and avoid loose clothing. Know the location of the fire extinguisher, eye wash station and emergency exits.
始终佩戴护目镜并穿实验服。扎起长发，避免穿着宽松衣物。了解灭火器、洗眼器和紧急出口的位置。
| Safety Guideline | 安全指南 |
|---|---|
| Never taste or smell chemicals directly. | 切勿直接品尝或闻化学药品。 |
| Wash hands after handling substances. | 处理物质后要洗手。 |
| Report all spills and breakages immediately. | 所有溢出和破损立即报告。 |
| Keep your work area clean and tidy. | 保持工作区域干净整洁。 |
By following these rules, you ensure a safe environment for yourself and others.
遵守这些规则，你就能为自己和他人营造安全的环境。
3. States of Matter | 物质的状态
All substances exist in one of three main states: solid, liquid or gas. The state depends on how particles are arranged and move.
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