基于逆向思维的化学实验创新研究

Chemistry Experiment Innovation Based on Reverse Thinking

在分析常规实验的基础上,发现问题或不足,基于逆向思维进行创新改进。通过药品加入顺序的倒置、实验仪器或实验环境的倒置操作、逆向分析实验结论等,创新改进制备氢氧化亚铁沉淀,盐酸滴定NaHCO3溶液,利用发光二极管判断原电池正负极,反转实验环境改进焰色反应,逆向分析水的组成等实验。

Based on the analysis of problems and deficiencies of conventional experiments,this paper improved experiments with reverse thinking.Through the reversal of the order of adding reagent,an inverted operation of an experimental instrument or environment,reverse analysis of conclusion,some experiments were improved such as the preparation of ferrous hydroxide precipitation,sodium bicarbonate solution was titrated with hydrochloric acid,LED was used to judge the anode and cathode of primary battery,reversed experimental environment to improve the flame reaction,and etc.