置换反应和复分解反应,是中学化学中二类最基本的反应.由于有的知识在讲这二类反应时尚未学到(有些在中学教材中是不讲的),加之对化学反应的规律和各规律之间的联系理解不深,中学生往往容易生搬硬套置换反应和复分解反应的规律而造成错误.发现这类错误时,教师应及时给予指点和引导,以加深学生对这二类反应的本质的认识, Replacement reactions and metathesis reactions are the second most basic reactions in middle school chemistry. Because some knowledge has not been learnt when talking about these two types of reactions (some are not taught in high school textbooks), plus the laws of chemical reactions and The understanding of the relationship between the rules is not deep, middle school students are often prone to impersonation of the laws of displacement reaction and metathesis reaction and cause errors. When such errors are found, teachers should give timely guidance and guidance in order to deepen the students’ nature of these two types of reactions. understanding,