铁钉趣味小实验

• 作 者: 余北平
• 机 构: 湖北
• 出 处: 第二课堂(小学内容)
• 发表日期: 2005年11期
• 关键词: 食盐水 淬火处理 碘酒溶液 碘离子 黄棕色 浅棕色 烧红 自然冷却 碘溶液

一、铁钉锈蚀小实验取4支试管,分别放入铁钉。然后,在A 管里放一些干燥剂;B管中放入水,将铁钉浸没一半;C试管也放入水,将铁钉完全浸没;D试管里放入食盐水,将铁钉浸没一半。结果发现,A试管里的铁钉完好无损,一点儿也没有生锈;B试管里的铁钉锈得较厉害;C试管里的铁钉略有些生锈;D试管里的铁钉锈得最厉害。

First, the corrosion of small iron nail experiment Take 4 test tubes, respectively, into the nail. Then put some desiccant in tube A; put water in tube B and immerse it in half; put tube C in water and completely immerse it in tube; put in saline solution in tube D and immerse it in half . The results showed that the nail in A test tube was intact and did not rust at all. The iron nail rust in test tube was more severe. The iron nail in test tube was slightly rusty. The iron rust in test tube was the most Amazing