甲烷的分子结构安排在根据实验数据通过计算确定其分子式以后,这部分内容在高二教材中分正文(大字)和阅读教材(小字)两部分编写。这部分教材是在初三、高一学习了电子云、核外电子运动状态、核外电子排布、化学键等物质结构知识以后来进行教学的,故应与前面的知识有机地结合起来。这部分教材又可为学习甲烷的性质,其它烃(乙烯,乙炔、苯等)和烃的衍生物的结构、性质打下基础。这就是说,甲烷分子结构的教学在中学结构化学教学中有承上启下的作用,是有机物结构知识的基础,至于小字部分的阅 After the molecular structure of methane is determined based on experimental data and its formula is determined by calculation, this part of the content is written in two parts: Text (Large) and Reading Textbook (Small-character). This part of the teaching materials was taught in the third and first grade after learning the electronic cloud, the state of nuclear electronic movement, nuclear electronic layout, chemical bonds, and other material structure knowledge, so it should be organically combined with the previous knowledge. This part of the textbook can lay the foundation for the study of the nature of methane, the structure and properties of other hydrocarbons (ethylene, acetylene, benzene, etc.) and hydrocarbon derivatives. This means that the teaching of molecular structure of methane plays a role in the teaching of structural chemistry in middle schools. It is the basis of the knowledge of organic structures, and the reading of small words