钠与水反应的实验方法有多种,但都不易控制反应的速率,并都有一定的不安全因素。现作如下改进,使钠在隔绝空气的条件下与水反应,利用煤油来控制反应速率,使学生能仔细观察各种实验现象。该方法简便、安全、现象明显、有趣味性。a.实验材料。药品:绿豆粒大金属钠、水、煤油、酚 There are many experimental methods for the reaction of sodium and water, but it is not easy to control the rate of reaction, and there are certain unsafe factors. The following improvements are being made to allow sodium to react with water under conditions that are isolated from air, and to use kerosene to control the reaction rate so that students can observe various experimental phenomena carefully. The method is simple, safe, obvious and interesting. a. Experimental material. Drugs: mung bean grains of large metal sodium, water, kerosene, phenol