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That is because atoms move faster. That way, they will go farther from their neighbor before being pulled back.

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Q: Why do most materials expand when heated?
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Related questions

Does plasma expand when heated?

I assume as most materials do.


Does an iron ring expands or contracts on heating?

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materials usually expand when heated.


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That's not just an iron wire - most materials expand when heated. This is called thermal expansion, and has to do with the fact that molecules move faster when it is hotter.


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ummm it will definetely expand....if the materials you"re talking about is the term for science.


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