A Comparative Study Of Chemistry Balance Test Questions Under The Background Of The New College Entrance Examination

"Chemical balance" is an important learning content of high school chemistry.In the background of the reform of the new college entrance examination,this study adopts methods such as literature analysis,text research,and statistical analysis and the chemical balance test questions of the National ? Volume,National ? Volume,National ?Volume,Zhejiang volume,Beijing volume,Shandong Volume,Tianjin Volume,Hainan Volume and Jiangsu Volume in the 2020 College Entrance Examination are the research objects.From the basic situation,the examination perspective,and the analysis of the test questions,a comparative study of the chemical balance test questions is carried out.The results of research show that:(1)Chemical balance test questions account for a large proportion of the 2020 College Entrance Examination questions,the structure and proportion of the test questions are relatively consistent,and the content of the examination focuses more on the grasp of basic knowledge and the understanding of basic theories;(2)There are applications of situational materials in the chemical balance test questions of the 2020 College Entrance Examination.Most of them require students to solve problems based on situational information and combined with the knowledge they have learned;(3)At the thinking level,multiple-choice questions are mainly based on the multi-point structure level and the correlation structure level.Among the non-choice questions,there are many questions on the related structure level and the expanded structure level,and the whole is at moderate level;(4)In terms of thoughts and methods of chemistry,the proportion of balance thought and model construction thought are relatively high,about 71%,while conservative thought and macro-micro combination thought are less than 30%;(5)In terms of propositional ideas,most tend to create situations related to actual production and life,or integrate analysis of image information,and focus more on the examination of students' problem-solving ability to use the knowledge they have learned in new situations.Based on the research results,provide teaching enlightenment for frontline teachers:(1)Develop a long-term teaching plan;(2)Implement an efficient classroom model;(3)Implement a sound evaluation system.Exam preparation enlightenment:(1)Help students build a basic knowledge network;(2)Provide students with opportunities to do textbook experiments;(3)Set up micro-topics for students to break through difficulties;(4)Be a"guide" in student exercise classes.Provide enlightenment for studying and preparing for the new college entrance examination:(1)Pay attention to the context of the textbook and master the necessary knowledge;(2)Dig out image information and analyze the test questions as a whole;(3)Combine theory with practice to solve existing problems;(4)Stick to basic principles and pay attention to language norms.