水晶泥在化学实验教学中的应用与思考

Application of Crystal Mud in Chemical Experiment Teaching

运用市售“水晶泥”为实验材料,探索课堂演示“高吸水性树脂的吸水性”和“胶体的丁达尔效应”实验的新方法.实验材料颜色丰富多彩,演示时课堂气氛活跃;胶体的丁达尔效应与高分子吸水材料的吸水性实验效果均很显著,观赏性强.“水晶泥”安全易得,实验操作简易,便于学生开展家庭实验.

Using crystal mud as experimental materials, this paper designed two classroom demonstration experiments, water absorption of superabsorbent resin and Tyndall effect of colloid. The experimental phenomena were very obvious, the experimental materials was color- ful, and the classroom atmosphere was active. Crystal mud was safe and easy to get, and the experiments were easy to operate, which was convenient for students to carry out family experiment.