我利用化学演示实验“催化剂对化学反应速率影响的实验”制作了“演示反冲现象”的物理教具,取得了较好的效果。(1)实验原理:双氧水在常温下分解缓慢,加入二氧化锰做催化剂,分解速率加快,放出大量氧气,氧气从反应器的玻璃尖嘴喷出,反应器在反作用力的作用下转动起来,直到反应结束停止转动。反应方程式: I used the chemistry demonstration experiment “Experiment on the Effect of Catalyst on Chemical Reaction Rate” to produce a physics teaching aid that “demonstrates the recoil phenomenon” and achieved good results. (1) Experimental principle: Hydrogen peroxide decomposes slowly at normal temperature. Manganese dioxide is used as a catalyst. The decomposition rate is accelerated, and a large amount of oxygen is released. Oxygen is ejected from the glass tip of the reactor and the reactor is rotated under the action of the reaction force. Stop turning until the end of reaction. Reaction equation: