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If we start heating a substance, does it melt when we break its intermolecular bonds? [closed]

I was reading the 2 following posts: Do substances melt when we break their intermolecular bonds? Is melting/boiling point of ionically bonded substance higher than of covalently bound? Altough ...
Gabriele Scarlatti's user avatar
17 votes
1 answer
7k views

Why is the melting point of PCl3 less than that of PCl5?

From just the IB chemistry bonding chapter information, you would normally deduce that $\ce{PCl3}$ and $\ce{PCl5}$ are both covalent molecules. However, as $\ce{PCl3}$ has a dipole moment, it has ...
Stone's user avatar
  • 299
5 votes
0 answers
5k views

Intermolecular Forces in Teflon vs Polyethylene

From Wikipedia, polyethylene has a melting point of around $400K$, while Teflon (polytetrafluoroethylene) has a melting point of $600 K$, which is much higher. Besides the increased London Dispersion ...
Yunfei Ma's user avatar
  • 1,620