Strength of Interactions in a Solid

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rkusampudi
Posts: 58
Joined: Fri Sep 29, 2017 7:04 am

Strength of Interactions in a Solid

Postby rkusampudi » Mon Jan 08, 2018 5:30 pm

In a conceptual paragraph in the textbook, it said that when a solid melts, the molecules can move more freely,
but the interactions between them remain as strong. Does anyone understand why this is true?

Salman Azfar 1K
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Strength of Interactions in a Solid

Postby Salman Azfar 1K » Mon Jan 08, 2018 5:38 pm

If I had to wager a guess, interactions between molecules are determined by which molecules are present, and nothing changes there. However, their arrangement and ability to move freely does change.

Xin He 2L
Posts: 38
Joined: Fri Sep 29, 2017 7:05 am

Re: Strength of Interactions in a Solid

Postby Xin He 2L » Mon Jan 08, 2018 5:48 pm

I think the answer has to do with the extra energy that is put into the system when a solid becomes a liquid. Although the bonds within the system stay just as strong, the extra energy allows for bonds between particles to break and move freely.

Sohini Halder 1G
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am
Been upvoted: 1 time

Re: Strength of Interactions in a Solid

Postby Sohini Halder 1G » Mon Jan 08, 2018 9:51 pm

I think the extra kinetic energy allows the liquid molecules to flow past one another more easily than molecules of solids.


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