| In today’s world,science and technology are advancing rapidly and the competition for highly qualified personnel is becoming more and more fierce.Capacity as an important indicator of evaluation of talent has aroused widespread concern in the community.At the same time,basic education in our country shows a trend of coexistence of popular education and excellent education,and coordinated development.Among them,the discipline competition is an important way of excellent education.Chinese Chemical Olympiad as an important high school student extracurricular competition,it is of great significance to select and cultivate students with comprehensive ability and scientific literacy to help them to grow into leading cadres in the chemical education and research fields as soon as possible.In recent years,the study of chemistry competition test questions has drawn high attention from high school chemistry teachers,competition training workers and university researchers.Among them,the research on special topic studies and the whole set of test questions is the most common,and there are few systematic studies on the test questions.Therefore,in this paper,the subjects of the twenty years China Chemistry Olympiad(preliminary contest)are taken as the research objects.Firstly,the paper discusses how the proposition’s foothold gradually changes from knowledge to ability from the distribution of knowledge points,the density of knowledge surface and the source of proposition materials.Secondly,this paper analyzes the complexity of each question and how to present the test questions,selects representative questions from 220 test questions,and analyzes the problem-solving ideas in detail,To sum up the questions focus on and check the students’ ability of chemical disciplines including: thinking ability,information processing ability,analysis and reasoning ability,learning transfer ability,chemical calculation ability and spatial imagination ability;Finally,from the number of test,test structure,the focus of the examination,the selection of propositional material,Ability evaluation guide summarizes the development trend of chemistry competition papers.Besides,this paper discusses the development trend of chemistry competition is how to effect the cultivation ofchemical core literacy of middle school students.And competition training and test research put forward the corresponding suggestion,it hopes to provide some reference value for the future training of chemical teachers and promote the professional development of young teachers and healthy development of chemical competition. |