论文部分内容阅读
人民教育出版社新版高级中学化学教科书第一册（天津、山西、江西试验本）第二章第一节钠和水的反应实验。因为钠熔成小球后易脱离大头针而浮上水面，熔成的钠球易烧透塑料壁而发生危险笔者将该实验改进如下：１仪器和药品镊子、Ｕ型管、两个胶塞、烧杯、钠２实验步骤（１）向
People’s Education Press new version of high school chemistry textbook first (Tianjin, Shanxi, Jiangxi experiment) Chapter II of the first section of the reaction of sodium and water experiments. Because sodium melts into pellets, it is easily detached from the pins and floats on the surface of the water. The melted sodium ball easily penetrates into the plastic wall and is dangerous. The author improves the experiment as follows: 1 Instruments and Drug Tweezers, U-tube, two rubber stoppers, , Sodium 2 Experimental Procedure (1) To