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在九年制义务教育化学教材中,与溶质质量分数有关的化学方程式计算是个教学重点和难点。在这之前学生虽然已经掌握了一些解简单计算题的知识,但综合分析能力差,遇到稍复杂的计算题时,不能对题目所给的众多数据条件进行正确分析,导致解题时要么无法下手,要么乱算乱求。与溶质质量分数有关的化学方程式计算看似复杂,实际上,只要老师和同学们在教学和学习的时候注意分析和归纳,形成技巧,解答与溶质质量分数有关的化学方程式计算题时也一定会一马平川。
In the nine-year compulsory education chemistry textbook, the calculation of the chemical equation related to solute mass fraction is a teaching emphasis and difficulty. Prior to this, although students have mastered some knowledge of solving simple calculation questions, the comprehensive analysis ability is poor. When they encounter slightly complicated calculation questions, they can not correctly analyze many data conditions given in the topic, Start, or disorderly disorder seeking. The calculation of the chemical equation related to the mass fraction of solute may seem complicated. In fact, as long as the teacher and the classmate pay attention to the analysis and induction during teaching and learning, they will certainly be able to formulate and solve the chemical equation calculation questions related to the solute mass fraction Ma Pingchuan.