题目内容
书面表达
根据下面的提示
,写一篇有关水沸腾的实验报告。实验目的:
1.观察水沸腾时的温度;2.观察水沸腾过程中的现象。器材:烧杯
(beaker);水;温度计(thermometer);酒精灯(ethanol light);烧杯架;火柴。步骤:
1.在烧杯里盛100克左右的水;2.在水中放入温度计;3.加热杯中的水,并观察温度计的示数和水的情况。结果:当温度达到一百摄氏度时,水面出现大量气泡。
结论:
1.水在一百摄氏度时开始沸腾;2.水在沸腾过程中有大量气泡产生。
答案:
解析:
解析:
Aims: 1.To observe the temperature of the water when it is boiling. 2.To observe what happens when water is boiling. Apparatus:a beaker; water; a thermometer; an ethanol light; a beaker holder; matches. Procedures: 1.Fill about 100 g water in the beaker. 2.Put a thermometer in the water. 3.Heat the water in the beaker, and watch the readings of the thermometer and observe what happens when the water is boiling. Result:Bubbles begin to appear when the temperature reaches 100 degrees centigrade. Conclusion: 1.The water boils when the temperature reaches 100 degrees centigrade. 2.A lot of bubbles appear during the boiling. |
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