化学计算是初中化学的重要教学内容,是教学的重点和难点,也是初中阶段学业水平考试的热点、考点之一。笔者结合自己的教学经验及对近几年的化学试卷的分析,对如何学习和进行化学计算作了例析。发现化学计算主要有根据化学式的计算、有关溶液的计算、根据化学方程式的计算和综合计算四大类型。并对四大类型的部分考点,各种题型的解题技巧、解题策略进行分析和说明。 Chemistry calculation is an important teaching content of junior high school chemistry, is the teaching of the key and difficult, but also junior middle school academic level test hot spots, one of the test sites. Based on my own teaching experience and analysis of chemical papers in recent years, the author gives an analysis on how to learn and carry out chemical calculations. Found that chemical calculations are mainly based on chemical formula calculation, the calculation of the solution, according to the calculation of the chemical equation and comprehensive calculation of the four types. And the four types of part of the test sites, a variety of questions of the problem-solving skills, problem-solving strategies for analysis and description.