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随着化学教学质量的不断提高,化学计算已从化学方程式计算。浓度计算、确定分子式等类型的计算引深到推理计算。因为推理计算不仅能巩固学生已学的基础知识,而且能培养学生的综合运用和逻辑推理的能力,它是发展智力、培养能力的重要题型之一。正因为如此,在1979～1982年的高考化学试题的正、付卷中,推理计算题均占有一定的比重。根据近几年高考化学成绩统计和分析,发现推理计算题的得分率较低,是学生的薄弱环节,也是化学教学的难点。学生对这类题目常感无从下
As the quality of chemistry education continues to increase, chemical calculations have been calculated from chemical equations. Calculation of concentration, determination of molecular formulas, and other types of calculations lead to inference calculations. Because inference calculation can not only consolidate the basic knowledge students have learned, but also develop the students’ comprehensive use and logical reasoning ability. It is one of the important questions in developing intelligence and cultivating ability. Because of this, in the 1979-1982 college entrance examination chemistry question and answer, the reasoning calculation questions all occupy a certain proportion. According to statistics and analysis of chemistry scores in college entrance examinations in recent years, it has been found that the scoring rate of inference calculation problems is relatively low, which is a weak link for students and also a difficulty in chemistry teaching. Students often feel uncomfortable with such topics