电化学知识不仅与日常生活关系密切,也是高考的热点,其中有两部分内容是难点,也是高考的重点,根据笔者的教学经验总结归纳如下。一、原电池电解池的判断1.单个电池:先看有无外接电源,有外接电源的为电解池,无外接电源可能为原电池,然后依据原电池的构成条件分析判断,主要是“四看”:一看本质,有无自发的氧化还原反应发生;二看电极,两极为导体且存在活泼性差异(燃料电池的电极一般为惰性电极);三看电解 Electrochemical knowledge is not only closely related to daily life, but also a hot spot for college entrance examination, which has two parts is difficult, but also the focus of the college entrance examination, according to the author’s teaching experience is summarized as follows. First, the judgment of the original battery cell 1. A single battery: first look for external power supply, external power supply for the electrolytic cell, no external power supply may be the original battery, and then based on the analysis of the composition of the original battery to determine the conditions, mainly “ Look at the nature of the ”spontaneous" redox reaction occurs; two see the electrode, the two poles as conductors and there is a difference in lively (fuel cell electrodes are generally inert electrode); Third look at electrolysis