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一、教材分析 1.本章在初中化学中占着很重要的地位。中学化学教学大纲(草案)中提到:“初中全部化学课程是以原子—分子论为基础的”。虽然使“学生真正掌握这个理论,是通过全部化学课程的学习,随着他们自己知识的积累而逐步进行的。”但由於全部教材都要贯串这个理论,因此对原子—分子论的基本论点的研究是非常重要的。初中化学对原子—分子论分做两章叙述,由於要讲清物质是由分子构成的,再讲清分子是由原子构成的,所以把分子论放在前面。在这个意义上来讲,如果第一、二两章是初中全部化学的基础,则
First, the textbook analysis 1 this chapter in junior high school chemistry occupies a very important position. High school chemistry syllabus (draft) mentioned: “junior high school chemistry courses are based on atom - molecular theory.” Although “students really grasp this theory through graduation of all their chemistry courses and accumulation of their own knowledge,” since all the textbooks should go through this theory, the basic thesis of atomic-molecular theory Research is very important. Junior high school chemistry on the atomic - molecular theory points to make two chapters narrative, because it is necessary to make clear that the material is composed of molecules, and then make clear that the molecules are made of atoms, so put the molecular theory in front. In this sense, if chapters one and two are the basis of all junior high school chemistry, then