试题与答案

在“观察水的沸腾”的实验中，小组记录的实验数据如下表所示： 时间（min）…45

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题型：问答题

题目：

在“观察水的沸腾”的实验中，小组记录的实验数据如下表所示：

时间（min）…45678910111213…
温度（℃）…90919397989898989898…
（1）某实验小组观察到水沸腾前和沸腾时水中气泡的上升情况不同，如图中a、b所示．则图中______是水在沸腾前的情况，

（2）从记录的数据可得出的实验结论是：此时水沸腾的温度是______℃．

（3）实验中可看到：水在沸腾时继续加热，温度______（变大、不变或变小）

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

考点：沸腾及沸腾的特点
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( )1. A. afforded   
( )2. A. collected  
( )3. A. hardly    
( )4. A. bowl      
( )5. A. Outward   
( )6. A. prize    
( )7. A. The one   
( )8. A. bare      
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( )10. A. connected  
( )11. A. hopeful   
( )12. A. regularly  
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( )15. A. of       
( )16. A. protect   
( )17. A. explained  
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( )19. A. thus      
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B. in    
B. forced  
B. described      
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