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近年来的中学化学教材和学校教育实践中都有淡化计算的趋向,相应的导致学生的化学计算能力普遍性下降,近几年的高考化学计算性题目考生得分普遍偏低就是明证。本文拟通过2006年和2007全国高考理科综合四川卷第29题的解法分析与思维运用来谈谈对化学方程式进行“量化”理解的重要性。一、对2006年全国高考理科综合四川卷第29题(3)小题的分析【考题再现】四川有丰富的天然气资源。以天然气为原
In recent years, middle school chemistry textbooks and school education practices have played down the trend of calculation, resulting in a general decline in students’ ability to calculate the chemistry. In recent years, the scores of candidates for chemical calculation topics in college entrance examinations are generally low. This article intends to discuss the importance of “quantitative” understanding of chemical equations through the analysis and application of thinking in the 2006 and 2007 national college entrance exams. I. Analysis of the 29th Issue (3) of the 2006 Sichuan Provincial Entrance Examination Science Comprehensive Science Paper [Question Reproduction] Sichuan is rich in natural gas resources. For natural gas