Green Chemistry And High School Chemistry Experiment Reform

Green chemistry is one of the key directions in the research of chemistry science hi the 21st century. Guided by the thoughts of green chemistry, the reform of chemistry experiments in middle schools, which include choosing reactor, designing experiment apparatus, controlling reacting process and the greening research on the disposal of waste, not only helps middle school students form the notion of green chemistry and adapt to the development of the chemistry development, but also helps stimulate students' creativity, foster the awareness of students' getting along harmoniously with nature, and establish the notion of continuous development. So, it means a lot to green chemistry and the reform of chemistry experiments in middle schools.Based on the analysis of the present conditions and existing problems in chemistry experiments in middle schools, the present article proposes the research thinking of the reform in middle school experiments, guided by the notion of green chemistry and focusing on chemistry experiment system, in order to probe the principles, content and methods of doing research on greening hi chemistry experiments in middle schools and expound the impact and new enlightenment greening design in chemistry experiments has on the teaching reform of chemistry experiments in middle schools.The research on the chemistry experimentation greening hi middle schools should follow five fundamentals: 1. the greening design principle in the whole process of chemistry experimentation; 2. the principle of the combination of green chemistry notion and raising environmental awareness; 3. the principle of the combination of science and feasibility; 4. the principle of the combination of thrift and safety; 5.the principle of the combination of miniaturization and directness. According to the above-mentioned principles, considering the reality of chemistry experimentation in middle schools, take a typical experiment for example,designing the greening of chemistry experiment in middle schools may be summarized as follows: 1. Improve experiment principle and design the greening of experiments. 2. Control experiment conditions and design the greening of experiments. It includes reducing the density of medicines, choosing the optimal medicine proportion, choosing unpolluted catalyst and controlling response time properly. 3. Improve experiment methods and design the greening of experiments. It includes miniaturizing and minimizing experiments, integrating individual experiments and making the best use of reactants, adopting new experiment methods, and propagating and using environment-friendly products. 4. Standardize operation, dispose the wastes from experiments well and realize experiment greening. It includes the disposal of waste liquid and gas from experiments.