中学生的新奇心态、家常化习惯造成不规范操作,是化学实验中出现事故的主要原因。由于初次接触实验有一种特别的新奇感,有些学生会产生异常的心理反应,如又好又怕,听到有毒、爆炸等字眼便心惊胆战,手不从心,倒试剂时手摆动不定而倒在另一只手或衣物上。有一种人则好充英雄,毫不 The novelty mentality and normalized habits of middle school students cause irregular operations, which is the main cause of accidents in chemical experiments. Because the initial exposure experiment has a special novelty, some students will have abnormal psychological reactions, such as being good and afraid. When they hear poisonous words, explosions, etc., they will be frightened, and their hands will be involuntary. When the reagents are poured, the hands will swing and change. One hand or clothing. One kind of person is a good hero, no