The Analysis Of CEE Chemical Experiment Last Eight Years In Gansu Province And Research On The Current Situation

The college entrance examination(CEE)is considered to be necessary for the transition from primary education to higher education which becomes the most mechanism for personnel selection.To study the past paper questions of the entrance examination would be of help for teachers and students to grasp the points more comprehensively and efficiently.Focusing on key points and difficult points and comprehensive understanding the way of proposition experts could help avoiding the misunderstanding of predicting the paper questions.The coverage and the difficulty of the knowledge and questions are matched in the examination each year.The knowledge points and question styles are involved in the examination questions of recent 8 years.According to the study,Inheritance was found to be one of the characteristic in the CEE.Even though the same questions are not shown each year,the complexity,difficulty of the questions showed repeatability.The experiment is the basis and the spirit of chemistry and the compulsory part of CEE accounting large percentage in the examination.In this research,we discussed the preparation strategy of experimental part of CEE chemistry in Gansu,according to the analysis of experimental part of chemistry of CEE in recent 8 years and educational status quo of high school in Gansu.The results show that:(1)The chemistry experimental questions of CEE are mainly examined from two aspects: basic experimental knowledge and comprehensive experimental knowledge.Exploratory experimental questions,quantitative experimental questions,and organic preparation experiments are three main types which are included in the comprehensiveexperimental questions.When answering exploratory experimental questions,first of all,the purpose of the experiment shold be understood.The answers to the questions could be found before make comprehensive understanding of the principles putting up the questions and making hypothesis.When facing the quantitative experimental questions,students were required to be able to understand the principles independently.To think the problerm during the experiment and draw a conclusion would help the students understand and grasp such kind of experiments.When solving organic experiment preparation questions,the experimental equipments and reaction conditions shold be clarified.The order of the reagent addition and purification method of the product should be paid attention.(2)There are three types of experimental questions.First,based on the textbook to examine students' basic experimental operation skills and analysis capabilities.Second,using flow chart to examine the ability to collect efficient information and its application.Third,in the form of "chemical experiment design and investigation questions" to examine ability to integrate information.(3)There are two main types of chemistry experiment questions in CEE including multiple choice questions and comprehensive experimental questions.Multiple choice questions mainly based on the design and evaluation of experimental schemes,the character of substances and inference to examine the basic experimental ability of students.Comprehensive experimental questions mainly based on elemental compounds,according to the preparation,removal of impurities,properties,inference and other aspects of question types to test the knowledge grasp of inorganic and organic matter.(4)High schools in Gansu province should pay attention to high school chemistry experimental teaching improving the construction and the use of laboratories.On the other hand,pay attention to teacher training to change teachers' cognition.Different kinds of experimental teaching method should be applied.(5)During the exam preparation process,students should pay attention to operation,flexible innovation,experiment design,actual practise and thinking training.