论文部分内容阅读
物质结构、元素周期律是中学化学的重点基础理论,本单元是中学化学的难点、高考的重点.本单元内容可分为四个方面,每一个方面又
The structure of matter and the law of periodicity of elements are the key basic theories of chemistry in middle schools. This module is the key point of high school chemistry and the entrance examination. The content of this module can be divided into four aspects. In each aspect,