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方法一实验用品铁架台、刻度尺、大试管、小试管、胶塞、细线、弹性好的橡皮筋、铁丝、氢氧化钠溶液、硫酸铜溶液。实验方法①用铁架台、刻度尺、铁丝、弹性好的橡皮筋等做一简易弹簧秤;②向大试管中注入约5mL氢氧化钠溶液,向小试管中注入约5mL硫酸铜溶液,用线拴好小试管,小心放入大试管中,盖好胶塞,挂在“弹簧秤”下,如图1,记下指针所在位置;③将大试管倾斜,使两种药品接触发生反应,观察现象,记下反应后指针所在位置,与反应前相比较。
Method A laboratory supplies Tiegui Taiwan, scale, large test tube, a small test tube, rubber stopper, fine lines, flexible rubber band, wire, sodium hydroxide solution, copper sulfate solution. Experimental methods ① with a steel bench, scale, wire, elastic good rubber band and so do a simple spring scale; ② into the large test tube into about 5mL sodium hydroxide solution, to the small test tube into about 5mL copper sulfate solution, tied with a wire Good small test tube, carefully placed in a large test tube, covered with plastic stopper, hanging in the “spring scale”, as shown in Figure 1, note the location of the pointer; ③ large test tube tilted so that the two drugs in contact with the reaction observed Phenomenon, note the location of the pointer after the reaction, compared with the pre-reaction.