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高考化学试题中,有关溶液的试题不少,而初中溶液部分则是每考必出的热点。但由于该内容是初中化学的难点,不少同学在初中学习时就掌握得不太好,特别是综合应用。又由于高中除了在讲授摩尔浓度时顺便提及质量百分比浓度外,溶液这部分内容基本上都未涉及。在总复习时,老师一般又认为学生已掌握这一部分内容,所以又未能引导学生系统地复习,从而这一知识点仍是学生学习中的困惑
In the chemistry test of the college entrance examination, there are many questions about the solution, and the solution of the junior middle school is the hot spot for every test. However, because this content is a difficult point for junior high school chemistry, many students do not master well when they are studying in junior high school, especially for comprehensive applications. In addition to the mass percentage concentration mentioned in the lectures on molar concentration in high schools, this part of the solution is basically not involved. In the overall review, the teacher generally believes that the student has mastered this part of the content, so he failed to guide the students to review systematically, and this knowledge point is still a puzzle in student learning.