苏教版《化学2》中在介绍钠的化学性质时安排了钠在空气中点燃的演示实验,通过观察淡黄色证明生成了过氧化钠,可按照教材中的实验操作,往往观察不到明显的淡黄色,教师和学生都感到非常困惑。我经过多次试验,终于找到了解决这一问题的方法,愿与大家分享。 The Soviet version of “Chemistry 2” in the introduction of the chemical properties of sodium sodium arranged in the air lit demonstration experiment, through the observation of light yellow to prove that the formation of sodium peroxide, according to experimental teaching materials, often not observed significantly Light yellow, teachers and students are very confused. After many tests, I finally found a solution to this problem and would like to share with you all.