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?
Strength of Interactions in a Solid
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Re: Strength of Interactions in a Solid
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.
Re: Strength of Interactions in a Solid
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.
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Re: Strength of Interactions in a Solid
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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