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主题:如何快速有效地提高复分解反应的书写?背景:第八章“酸碱盐”是初三化学最难的一章,前几章的知识点比较单一,涉及物之间的关系少,学生学习起来比较轻松,而学到了第八章,学生就会一头雾水,由此及彼的知识太多,二者不能机械照搬,有一定的条件限制,尤其是复分解反应的方程式书写。许多学生在进行物之间的复分解反应时,所书写生成物的化学式容易出现错误。我们知道分解反应是指两化合物之间进行互相交换成分的反应。而学生书写时却不知两化合物如何交换,怎样按照
Topic: How to improve the writing of metathesis quickly and effectively? Background: Chapter 8 “Acid-base salt” is the hardest chapter of the third-year chemistry. The knowledge points in the first few chapters are relatively simple and the relationships among them are few , Students learn more easily, and learned the eighth chapter, students will be confused, thus and his knowledge too much, the two can not be mechanically copied, there are certain conditions, especially the compound decomposition reaction equation writing. When many students carry out metathesis reactions between objects, the chemical formula of the written product is prone to error. We know that the decomposition reaction refers to the reaction between two compounds in exchange for each other. However, students do not know how to exchange the two compounds when writing, how to follow