The Analysis Of Chemical Reaction Principle Tests In National Ⅲ Paper For Recent Five Years And Suggestions On How To Prepare For The Tests

The college entrance examination is one of the most important and fairest ways to select talents at this stage in China,which is deeply valued by the country and its people.The success of the college entrance exam is closely related to the review of the third year of high school,which is the key period for students to solidify their foundation and quickly improve and breakthrough.As one of the subjects in the college entrance examination,chemistry is naturally the priority of the review.However,due to many teachers’ lack of understanding of the Curriculum Standards,the Exam Outline and other college entrance exam guiding documents,as well as their lack of research on previous years’ college entrance exam questions,some of the content involved in the senior year review process is too biased and difficult,and some of the key knowledge is not strengthened in place.When selecting exam questions for students to practice,there is often a lack of correspondence with the difficulty of the provincial college entrance exam,making the review less timely.As an important part of the chemistry knowledge system,the principle of chemical reactions accounts for a large proportion of the questions in the college entrance exam,but students tend to be more intimidated and score less when answering this part of the questions.So,what does the principle of chemical reactions test in the college entrance examination? How does it test? To what extent is the test? What competencies are required of candidates? What kind of knowledge do they have for students who are just entering a round of review? What are the best teaching strategies for dealing with student confusion? If these questions are known,the teachers of seniors will be more relevant in leading their students to review and prepare for exams,and their teaching will be more timely.This paper provides a detailed analysis and study of the recent five years National Paper III Chemical Reaction Principle questions,using the Curriculum Standards and the Exam Outline as benchmarks,and a detailed comparison and analysis of the common examination questions such as chemical batteries,ionic reactions and equilibrium in aqueous solutions,and comprehensive questions on chemical reaction principles with the National Paper I and II.Generally speaking,the questions on the principle of chemical reactions in National Paper Ⅲ are stable and mainly test the mastery and application of the basic knowledge of the principle of chemical reactions,but from the perspective of the content and difficulty of the questions,the examination of National Paper Ⅲ is close to that of National PaperⅡ,which is quite different from that of National PaperⅠ.Based on questionnaire and interview survey among students from three difference grades and classes,this article finds that most of them forget too much knowledge of chemical reaction principle before the first round review,especially the ion reaction and equilibrium in aqueous solution,which is a key point worth emphasis.According to interview survey among teachers,this article discovers that when excellent chemical teachers are leading students in the review of chemical reaction principle,they tend to employ different review strategies for students from different grades.On the other hand,they all emphasize on consolidation and implementation of basic knowledge.At last,the author combines research above and proposes related suggestions for the review and preparation of chemical reaction principle in high school grade 3.This paper is presented in six parts.Chapter 1: It focuses on the research background,research status,research content,research methods and research significance.Chapter 2: It mainly introduces the changes in the requirements of the contents of the principle of chemical reactions in different versions of the Curriculum Standards and Examination Outline in the context of the new curriculum reform,and analyzes its topic trends in the college entrance examination.Chapter 3: It focuses on the detailed statistics of the content of chemical reaction principles involved in the national III paper in terms of question distribution and score value to identify the examination pattern.Chapter 4: It conducts a detailed analysis of the examination of the principle of chemical reactions for recent five years National Ⅲ paper from the mark value,examination background,question presentation,problem solving ideas and core elements examination,and makes a detailed comparison regarding the high-frequency examination points with the National Ⅰ and Ⅱ papers to find out the differences of the questions in different national papers under the same examination outline.Chapter 5: It designs a questionnaire on the knowledge of the principle of chemical reactions for students who have just entered the first round of revision at three levels(intensive classes,focused classes,and regular classes),and statistically and analytically analyzes the results of the questionnaire to find out the students’ confusion in doing this part of the content.Interviews are conducted with the excellent chemistry teachers of the high school to find out how they respond when dealing with the content of the principle of chemical reactions.Interviews were conducted with the best chemistry teachers in our school to find out how they respond when dealing with the content of the principles of chemical reactions.Chapter 6: Suggestions for review and preparation for the exam are made based on my teaching practices and research on the entrance exam questions,surveys of students,and interviews with teachers.Chapter 7: Research findings and reflections on deficiencies.