Green Chemistry Is Embodied In High School Chemistry Experiments

Chemistry is an experimental-based discipline.Green chemistry is environmentally friendly chemistry.Green chemistry is the development direction of global chemistry.Many pollutants are produced in high school experimental teaching.Green chemistry will have an important inf luence on students'good chemical behavior.It is difficult to embody the idea of green chemistry in the middle school experiment teaching,since Reagents,experimental sites,idea of teachers and students are limited.Therefore,it is very necessary to study student experiment and teacher demonstration experiment in high school textbooks.In this paper literature research method,questionnaire survey method,interview survey method,case study methods are used,high schools in this region are selected as the research objects.This paper reviewed some related literature at home and abroad.Using the methods of questionnaire and interview method,the idea of green chemistry in high school chemistry experiment condition were investigated,and results shows that the teachers'idea of green chemical experiment is relatively weak,little application of green chemistry ideas to improve the experiment exploration.By means of studies and practice of specific experimental teaching cases,this paper puts forward some feasible improvement measures based on textbooks,and tries to make some contributions to the reform of chemistry experimental teaching in high school.This paper is divided into six parts:The first part is the reviews,including the background of the topic,research purpose,content,ideas,and the development of green chemistry at home and abroad.Environmental problems are becoming more and more serious,environmental protection has become the current state policy today,the study of green chemical thought is inevitable.The origin of green chemistry originated in the westa,after nearly three decades of development,have promise a vigorous vitality in the world.The second part is the theoretical basis of related concepts and research of green chemistry,including the connotation of green chemistry,Dewey's education theory and life education theory.The third part is the survey of green chemistry of student by questionnaire and the interview of chemistry teacher,and the statistical analysis was carried out,the research enlightenment was obtained.A survey of teachers and students in local high schools was conducted in the form of questionnaire and interview records.It was found that teachers and students initially formed gr een chemistry ideas,but this kind of consciousness was weak and relatively narrow,and green chemistry ideas could not be applied to teaching and life all the time.The fourth part is the analysis of the experiment in the textbook to understand the problems of the experiment in the textbook.All the exper iments in the high school chemistry textbook were listed in a tabular form,the pollutants that may appear in the experiments and the operations that may affect the environment were summarized.The fifth part is the improvement of experiment teaching using green chemistry.It contained demonstration and student experiment exploration.Including simple improvements to the experimental operation:sodium combustion experiment,reaction of magnesium strip with water,application examples of drip board;Modified reaction pr inciple:phosphorus spontaneous combustion experiment;Post-treatment of reaction products:Cu and concentrated HNO₃ reaction,aluminum thermal reaction,KMnO₄ decomposition experiment;Improved response miniaturization:an exploration of the properties of SO₂.The sixth part is divided into the research results and future prospects,including the research on the promotion of teaching and students'learning,and analysis of the shortcomings of the paper,the prospects for future research.