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做这个实验,经常出现的情况是,温度计的读数尚未达到熔点时,海波已开始熔化;在海波熔化过程中,温度计的读数仍继续上升,很难出记录的数据绘制出课本图4-8(甲)那样规则的晶体熔化图象。一、用作水浴锅的烧杯要大一些,并且装入的水要多一些,试管中装的海波的量也不能太少;酒精灯的火焰要小一些或者火焰稍远离烧杯底部。如果作水浴锅的烧杯太小或装入的水
In this experiment, it is often the case that when the reading of the thermometer has not yet reached the melting point, the sea-wave has started to melt; in the course of the sea-wave melting, the reading of the thermometer continues to rise, and it is difficult to plot the recorded data. 8 (A) Crystal melting images as regular. First, the beaker used as a water bath should be larger, and the amount of water loaded should be more, and the amount of sea waves installed in the test tube should not be too small; the flame of the alcohol lamp should be smaller or the flame slightly away from the bottom of the beaker. If the water bath beaker is too small or the water is loaded