Analysis And Review Strategy Of Chemistry Experiment In Shaanxi Province College Entrance Examination ——Based On The Chemistry Experiment In Compulsory Textbook

As one of the most important talent selection tests in China,college entrance examination plays an important role in promoting the growth of students and safeguarding the fairness of education."Chemistry experiment" is an important learning content of chemistry in high school.This study selected the 2016-2021 college entrance examination chemistry experiment questions as the research object,and adopted the methods of test questions research and comparative analysis.The research is carried out from the compilation characteristics of the compulsory high school chemistry textbook of the Human Education Edition,the frequent examination points and proposition trends of the chemistry experiment questions in shaanxi Province college entrance examination,and the review strategies of teaching and learning of the experimental content of the compulsory high school chemistry textbook.The results show that:(1)Chemical required textbooks for high schools chemical disciplines closely around the core accomplishment,set on chemical experiment contents emphasize particularly on metal and nonmetal inorganic compounds such as the properties and application of design project columns experiments verified the demo class,expand and explore the experiment,the teaching material writing characteristics present "chemistry and the integration of material and life",It highlights the comprehensive education in the four dimensions of knowledge concept,thinking method,practice innovation and value attitude.(2)In recent six years,the distribution of test points of chemistry experiment in college Entrance examination is relatively stable in each chapter.The test types are mainly "chemical expression characterization","quantitative analysis and chemical Calculation" and "analysis of substance composition",and the test content mainly focuses on "metal and its compounds".Secondly,the transformation and identification of Fe2+ and Fe3+,dilute nitric acid,silicon dioxide,sulfide,ammonium salt,methane,benzene and ethanol and other knowledge points in compulsory textbooks are discussed.(3)based on the teaching material and the analysis of test questions,through interview students questionnaire,teachers of high school chemistry experiment teaching present situation has carried on the investigation and study,the results of analysis showed that:(1)the college entrance examination chemistry experiment topic of comprehensive strength,the link of experiment knowledge,poor students on the application of the knowledge migration ability,in the aspect of using chemical terminology standardization expression is not standard;(2)Students' basic knowledge and skills of chemical experiments are insufficient,and they have less intuitive experience of independent experimental exploration in the laboratory.Students' acquisition of the core knowledge points of chemical experiments does not come from the experiment itself.(3)Teachers are often limited by the existing experimental conditions in experimental teaching,it is difficult to carry out exploratory experiments effectively,and the cultivation of students' practical and innovative ability needs to be strengthened.(4)Based on the above investigation and analysis and the comparison of students' test scores,this study proposed effective review strategies for chemical experiment knowledge:(1)Chemical experiment teaching should return to the textbook and experiment itself,and improve students' basic operation skills and analytical ability of chemical experiment.(2)By constructing the mind map of experimental knowledge framework,the structure,application scenarios,specific methods and operating steps of common experimental devices are moderately summarized by modules;(3)To strengthen the students' ability of identifying,describing and judging the experimental reagents,drugs,instruments and devices and basic operations,and to strengthen the students' ability of language representation of chemical professional terms;(4)Strengthen the training of students' basic computing ability and improve their chemical computing ability according to the frequent examination points of chemical computing questions in the college entrance examination;(5)Schools should improve the basic conditions of laboratory construction as soon as possible,attach importance to the teaching of chemical experiments,use "on-site experimental teaching + virtual laboratory" combined with rich teaching means,so that students through actual combat practice,training scientific thinking,improve the ability to analyze and solve problems.