| The proposition of the college entrance examination requires attaching importance to the foundation,comprehensiveness,application and innovation,and the gradual infiltration of "scientific spirit and social responsibility" into the chemical core literacy,more attention to the link with the actual production and life,triggered students to explore the production and life,social development,world peace,human destiny and the future of the important role of chemistry.The method of examination has changed from a single point of knowledge about the mutual transformation of substances to one with the background of chemical industry.The chemical process question appears in the national college entrance examination paper almost as a required question year after year,and holds the quite important score value as a major question.In order to fully grasp the proposition angle,investigation content and trend of the chemical process questions in the national chemistry examination papers of the college entrance examination in recent years,further optimize the teaching methods of senior high school chemistry teachers,enhance the guidance of students’ learning methods and strategies,and enrich the research progress of senior high school chemistry,the author of this paper uses "a summary of chemical process in high school chemisty test","analysis of chemical process problems in texts in the past three years","review and reference strategy of senior high school students in solving chemical process problems".The content of chemical process in senior high school is analyzed by literature review,case analysis and interview survey,and the following conclusions are obtained:(1)The proportion of structure and score of chemical process questions in college entrance examination is stable and comprehensive,which highlights the examination of comprehensive application of chemical knowledge;(2)The chemical process for the purpose of preparing substances is an important direction of the proposition of the chemical process for college entrance examination.Based on the actual situation,the chemical process is closely linked with the actual production and life,highlighting the practical application of the chemical discipline;(3)The goal of chemical process examination includes the mastery of basic knowledgeand experimental operation of the discipline,the ability to analyze and infer the discipline,and the ability to guide the actual production and life of the theory of the discipline;(4)The thinking level of the examination of chemical process questions is multi node and related node questions,and it highlights exploration and innovation;(5)Some common mistakes of senior high school students in dealing with chemical process problems are: lack of knowledge reserve;non-intellectual factors:do not look at the problems carefully and examine the problems incompletely;Verbal inaccuracy;fear of being unfamiliar with the situation in a chemical flowchart(6)The main ideas of chemical process are energy balance,mass conservation,model construction,scientific logic and so on.Based on the above research results,we can get some inspirations of reviewing and preparing for examination in solving chemical process problems.It is suggested that in the teaching of chemical process problems and chemical disciplines,teachers should strengthen the cultivation of students’ chemical process thinking,chemical experimental operation,analysis ability and practical application exploration ability on the basis of setting teaching objectives and designing teaching activities to build up students’ basic knowledge of disciplines.Teachers should guide students to strengthen the construction of the network system of element compound knowledge and expand their knowledge in the new lesson teaching and the review of senior three Arrange the chemical process questions regularly every week,let the students practice more,overcome the fear,accumulate the accurate description of the answer method,carry on the standard answer. |
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