KS3 WJEC Chemistry: Key Experimental and Practical Assessment Points | KS3 WJEC 化学：实验/实践考核要点

📚 KS3 WJEC Chemistry: Key Experimental and Practical Assessment Points | KS3 WJEC 化学：实验/实践考核要点

Practical and experimental skills are at the heart of KS3 WJEC Chemistry. They help you understand the world around you, test scientific ideas, and develop investigative abilities that will be assessed throughout your course. Mastering these key points will ensure you perform confidently in the lab and handle any experimental task safely and effectively.

实验与实践技能是KS3 WJEC化学的核心。它们帮助你理解周围的世界，检验科学观点，并培养在整个课程中都会考查的探究能力。掌握这些要点能让你在实验室里充满信心，安全有效地完成任何实验任务。

1. Lab Safety and Hazard Symbols | 实验室安全与危险标志

Always wear safety goggles and a lab coat before starting any practical work. Goggles protect your eyes from chemical splashes, while the lab coat shields your skin and clothing. Tie back long hair and remove dangling jewellery to avoid catching them on equipment or flames.

在开始任何实验操作之前，务必佩戴护目镜和实验服。护目镜保护眼睛免受化学品飞溅，实验服可保护皮肤和衣物。将长发束起，并取下悬垂的饰品，以免被设备或火焰钩住。

You must be able to recognise common hazard symbols displayed on chemical bottles. These include flammable (a flame), corrosive (a test tube dripping liquid onto a hand and surface), toxic (skull and crossbones), oxidising (a circle with a flame) and harmful/irritant (an exclamation mark). Understanding these symbols helps you handle substances safely.

你必须能够识别化学品瓶上常见的危险标志。这些标志包括：易燃（火焰）、腐蚀性（试管将液体滴在手和表面上）、有毒（骷髅

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