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钠与水反应的实验是高中化学必修内容中的一个重要实验,人教版教材介绍了如下两种方案。一、教材中的两种方案方案1:切一块绿豆大小的钠,用铝箔(事先用针刺一些小孔)包好,再用镊子夹住,放在试管口下,用排水法收集气体,等试管中的气体收集满时,小心地取出试管,把试管向下移近酒精灯火焰,检验钠与水反应生成的气体。如图1所示。
The reaction of sodium and water experiment is an important experiment in high school chemistry compulsory content, PEP teaching materials introduced the following two programs. First, the text of the two programs Scenario 1: Cut a piece of mung bean-sized sodium, with aluminum foil (prior acupuncture holes) wrapped, and then tweezers clamp, on the test tube mouth, drain the law to collect gas, When the gas in the test tube is full, carefully remove the test tube, move the test tube down to the flame of the alcohol lamp, and check the gas generated by the reaction between sodium and water. As shown in Figure 1.