Application of specific heat capacity
Question:

Background:Specific heat capacity of the substance is the change of  energy  when 1kg of the substance increases or decreases 1℃ of temperature.The material with high specific heat capacity can carry more energy , and we can use it to control the change of tempurature.

Table:specific heat capacity of some substances

According to the video and the table,which option is correct?

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Ethanol can be a better heating agent than water.

It is safer to touch a silver pan than an aluminium pan when we just heat it for a short time

Acity near a lake is always hotter than a city neat a sea.

We will be hurt when we touch the hydrogen of 0

Hydrogen has a very high specific heat capacity , and it will take away lots of energy when human touch it .

Sea water has a lower specific heat capacity than water,so water can take away more heat from the air to decrease the temperature.

Water has a higher specific heat capacity than ethanol.According to the video, water can bring more energy so it is the better heating agent.


Silver has a lower specific heat capacity,so the temperature of silver pan will increase faster and it would be more dangerous.



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History of edits
Edited BY: Linyan Xu Edit Date: 2016-08-16 23:35:09
Edited BY: Linyan Xu Edit Date: 2016-08-16 23:34:03
Edited BY: Linyan Xu Edit Date: 2016-08-16 23:32:06
Edited BY: Linyan Xu Edit Date: 2016-08-16 23:30:06
Edited BY: Linyan Xu Edit Date: 2016-08-16 23:21:58
Created By: Linyan Xu Edit Date: 2016-08-15 15:43:00
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