如图所示,小李同学用此装置探究冰融化过程中温度变化情况.(1)他将观察到的温度计示数变化情况记录在 如图所示,小李同学用此装置探究冰熔化过程中温度变化(1)他将...

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(1)描点连线,如下图;
(2)晶体都有一定的熔点,熔化过程温度不变,从图象可知冰是一种晶体,熔点是0℃,开始记录时冰的温度是-4℃,熔化过程是6min-3min=3min,在加热第5min时,冰处于固液共存状态;
(3)该温度计的分度值为1℃,读数为4℃;
(4)为减小实验误差,实验过程中宜选用较小的冰块,因为较小的冰块之间接触紧密,受热均匀.
(5)冰熔化太快,说明吸收的热量太快了或自身的质量太少了;故可以减慢吸热的速度,故可以撤去酒精灯;若冰太少,也会熔化的太快;故也可以增加冰块的质量.
故答案为:(1)

(2)0;固液共存;需要;(3)4;(4)较小;(5)增加冰块的质量.

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