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通用教材初中化学(全一册)第五章“酸碱盐化学肥料”的教学,是在前四章学习了一定量的化学基本概念和基本理论、氢、氧元素及其化合物、碱金属和卤素及其重要化合物、溶液及其有关计算的基础上进行的。教学中,可以应用前几章学过的物质结构的初步知识,复习分子式、化合价、化学方程式的书写和根据化学方程式进行的有关计算,促使学生熟练地掌握常用的元素符号、分子式、化学方程式等有关化学用语,加深对氧化还原反应的认识,巩固溶液浓度及其计算,把所学物质知识系统化起来。同时,本章的教学还可为高中学习物
The teaching of junior high school chemistry (the first volume), the fifth chapter of “acid-alkali-salt chemical fertiliser”, is based on the first four chapters to learn a certain amount of basic concepts and basic theory of chemistry, hydrogen, oxygen and its compounds, alkali metals and Halogen and its important compounds, solutions and their related calculations are based on. In teaching, you can apply the preliminary knowledge of the material structure that you learned in previous chapters, review the writing of molecular formulas, valences, chemical equations, and calculations based on the chemical equations to encourage students to master familiar element symbols, molecular formulas, chemical equations, etc. With regard to chemical terminology, we will deepen our understanding of the redox reaction, consolidate the solution concentration and its calculations, and systematize the material knowledge we learn. At the same time, teaching in this chapter can also be used for high school learning