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化学是一门实验科学 ,实验教学是中学化学教学中的重要组成部分。探究实验能够帮助学生获取基础知识和基本理论 ,能够激发学生的创新欲望和兴趣 ,能够发挥学生的积极性、主体性。下面是课堂教学中的一个实例。课题 :碳酸钠是一种很重要的化学物质。实验室中该如何制备、如何检?
Chemistry is an experimental science. Experimental teaching is an important part of chemistry teaching in middle schools. Inquiry experiments can help students acquire basic knowledge and basic theories. They can inspire students’ desire for innovation and interest, and they can exert their enthusiasm and subjectivity. The following is an example of classroom teaching. Question: Sodium carbonate is a very important chemical substance. How to prepare in the laboratory, how to check?