论文部分内容阅读
铁粉与水蒸气反应的实验难度大,存在需用喷灯加热、反应慢、成功率不高的问题。其原因是这个实验用时长、不安全(易炸裂试管)。人民教育出版社新课标高中化学新教材必修1把这个实验作为学生的科学探究内容,从而使难度更大。笔者反复进行实验探索,通过直接加热提高水蒸气的温度和流速、用玻璃纤维阻止冷凝水与铁粉相遇、用普通酒精灯加热等几方面的改进,使实验取得了很好的效果。
The experiment of the reaction between iron powder and water vapor is difficult, and there is a problem that it needs to be heated by a torch, the reaction is slow, and the success rate is not high. The reason for this is that this experiment takes a long time and is not safe (easily burst test tubes). People’s Education Press New Curriculum Standard High School Chemistry New Materials Required 1 Make this experiment a student’s scientific inquiry content, which makes it more difficult. The author has repeatedly conducted experimental explorations to improve the temperature and flow rate of water vapor through direct heating, prevent condensation water and iron powder from being met by glass fiber, and improve by using common alcohol lamps, so that experiments have achieved very good results.