试题与答案

如图所示,“研究水的沸腾”的实验中。 (1)为完成实验,表中的数据表明,选用的温

题型:实验题

题目:

如图所示,“研究水的沸腾”的实验中。

(1)为完成实验,表中的数据表明,选用的温度计的测温物质应为____________。

测温物质凝固点/℃沸点/℃
水银-39357
酒精-11778
(2)温度计刚插入热水时,管壁模糊,很难看清示数,原因是_______________。

(3)往烧杯上方加一纸盖,每隔1min记录温度计示数,4min时温度计的示数如图丙所示,温度值为______℃,直到水沸腾一段时间后停止读数,由表可知水的沸点为______℃。

时间/min012345678
温度/℃88909294 97989898
(4)根据表中数据,画出水温随时间变化的图象。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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