有节复习课,我给学生出了如下的一道开放性的题目:请你写出有关水参加的化学反应,如果是离子反应写出离子方程式,并判断反应是否属于氧化还原反应?若是氧化还原反应,请指明水在反应中的作用.这个题目,每个学生都能做,但学生往往做不全面.本题是个开放性题目,关键在于哪些物质能 During the quarterly review class, I gave the students the following open question: Please write down the chemical reactions involved in the water participation. If it is an ion reaction, write an ion equation and judge whether the reaction belongs to the redox reaction. If it is a redox reaction, Response, please specify the role of water in the reaction. This topic, each student can do, but students often do not complete. This question is an open topic, the key lies in what material can