【摘要】 对人教版高中化学教材中氯气的制备实验从实验原理、反应原料、实验装置、尾气处理装置等几个方面进行分析和改进,完善了整套实验装置.分别通过生活实例,三个质疑,小组讨论和实验设计等教学方法来激活学生的思维和跃进.培养师范学生做到学以致用,将理论运用于实践,在实践中完善理论.更多还原

【Abstract】 This paper is to introduce that several aspects of the experiment of producing chlorine can be improved. The aspects include experimental principle,reaction materials,experimental device,exhaust handling device and so on. It is unnecessary to heat for choosing KMnO4 and 10% of hydrochloric acid to make chlorine. And the device is simple. It can avoid chlorine absorption exhaust leaked through the control of switch sequence and usage of NaOH strong solution. Apply KI dipstick validation to test whether the chlorine is completely absorbed,improving the whole experiment device. Be concerned to the students ’ thought activation and leaps in chlorine laboratory classroom teaching design. Contact life reality,explore problems,stimulate desire,cause thinking conflict by timely question,create independent inquiry activity and train the thought quality. Achieve these goals through life examples,panel discussions and experimental design. Teachers do to apply it,put the theory into practice and perfect theory in practice. The students acquire knowledge in the discussion and experiments so that their thinking capacities can be effectively fostered and improved.更多还原