Analysis Of The Green Chemistry Content In The College Entrance Examination Questions And Its Teaching Enlightenment

The middle school chemistry curriculum standard clearly points out that students should have the Green Chemistry consciousness and the sustainable development consciousness.Under the guidance of curriculum standards,the concept of Green Chemistry gradually permeates the chemistry teaching in middle schools and is included in the chemistry test of college entrance examination.Therefore,it has become an indispensable and important task to cultivate students' Green Chemistry consciousness in middle school chemistry teaching.Chemistry curriculum standards focus on training students' safety awareness and rigorous and realistic scientific attitude.Fully reflects the importance of cultivating students' awareness of Green Chemistry and discipline core quality.Thus it can be seen that with the development of The Times and the progress of science and technology,it is of positive significance to study the Green Chemistry content in the college entrance examination chemistry test in depth,so as to better develop the Green Chemistry teaching and cultivate students' awareness of Green Chemistry,environmental protection and social responsibility.Under the guidance of humanistic learning theory and meaningful learning theory,this paper adopts literature research method and content analysis method to take the chemistry test papers of the national college entrance examination from 2014 to 2018 as the research object.From the perspective of examination paper types,this paper makes statistical analysis and comparative research on the Green Chemistry principles and test scores embodied in the test papers.This paper studies the types and forms of test questions from the Angle of time and summarizes the common types of test questions.On this basis,the paper analyzes the content of Green Chemistry in the college entrance examination,predicts the proposition trend of the content of Green Chemistry in the college entrance examination and puts forward the enlightenment of Green Chemistry teaching.The following conclusions are drawn:(1)Reduction principle and Recycling principle in "5R",the core content of Green Chemistry,are mainly examined.In each examination paper the Green Chemistry content examines the score value to maintain basically in 10 minutes or so,steadily has rises.It mainly focuses on the types of process material preparation,chemical reaction principle and exploratory experiment.(2)the test to industrial and agricultural production,resource recovery,environmental management and other test situations,check chemical reaction balance,optimize the chemical production process,material preparation,separation,purification and inspection and other basic knowledge,pay attention to students' scientific attitude and social responsibility;(3)based on the background of industrial and agricultural production,combining the three Green Chemistry principles of maximization of atomic economy,minimization of waste generation and maximization of utilization of recyclable resources,the paper examines students' Green Chemistry consciousness as the proposition trend.In the process of cultivating students' awareness of Green Chemistry,the concept of Green Chemistry should be infiltrated in textbooks,chemical experiments and test questions,as well as in extracurricular reading materials.Attention should be paid to the miniaturization,greenization,visualization and simulation of chemical experiments.And develop " Green Chemistry " as the theme of extracurricular activities,optimize the content of Green Chemistry test.Summarizing the important content and trend of examination plays an important role in improving students' scientific accomplishment and implementing the requirements of the new curriculum standard.It has guiding significance to Green Chemistry teaching in senior high school.