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我们自行设计了“手”形管 (如图所示 )来做“酸、碱、盐的电离特征”的实验 ,获得了较好的实验效果。1 “手”形管的制作及使用方法用内径约为 0 .6cm的硬质玻璃管 ,在酒精喷灯上制成高约 6cm、各竖管之间的间隔约为 2 .0 cm的“手”形管 (即为 5支管 )。它的底边横管用来盛
We designed a “hand” shaped tube (shown in the figure) to do the experiment of “ionization characteristics of acid, alkali and salt”, and achieved good experimental results. 1 “hand” shaped tube production and use of methods with an inner diameter of about 0.6cm hard glass tube, made of alcohol burner high about 6cm, the standpipe spacing of about 2 .0cm “hand ”Shaped tube (that is, five tubes). Its bottom edge of the tube used to Sheng