电解Na_2SO_4溶液演示实验的改进

Improving the Demonstrating Experiment of the Electrolysis Solution Na_2SO_4

中学化学演示实验通过明显的化学现象起到帮助学生理解知识,提高学生学习兴趣的作用。电解Na2SO4溶液改进实验在原来的实验基础上,将物理学中带电微粒在磁场中运动情况有机结合在一起。改进后的实验利用培养皿等微型仪器,通过溶液颜色的改变,不仅让学生观察到了电解时离子的微观变化过程,还能通过实验结果帮助学生找到判断电极产物的规律。

Demonstrating experiment can help students understand knowledge and raise their interests by obvious chemical phenomena. Based on the previous experiment, improved experiment of electrolysis solution Na2SO4 applied charged corpuscle＇s movement in the magnetic field into it. Improved experiment used petri dish and observed solution＇s color change, which not only helped students observe the change of ion, but also find out the law ofjudging electrode product.