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初中要求同学们在理解溶质质量分数概念的基础上,初步学会配制溶质质量分数一定的溶液的实验技能;溶质质量分数与化学方程式计算有机结合是计算题的重点考查方向,试题经常创设新情境或以图表的方式,考查学生分析和解决问题的能力.
Junior high school students are required to understand the concept of solute mass fraction based on the preliminary study of the preparation of certain solute mass fraction of the experimental skills; solute mass fraction and chemical equation calculation is the key to calculate the organic combination of test questions, questions often create new situations or Graphically examine students’ ability to analyze and solve problems.