Solids

[yellowjellybean]

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I'm sorry if this is a stupid question but I was just wondering: if in the solid phase say for NaCl, since there are no discrete units, does that mean there are only intramolecular bonds, no intermolecular bonds. Then wouldn't that be a chemical change during phase change? What about in metallic solids too?

 

[Raiden2012]

Erm sorry but I don't understand your question. Isn't solid NaCl just 1 big structure with the Na+ and Cl- ions bonded to each other ionically? What do you mean by intramolecular and intermolecular?

 

[Raiden2012]

http://en.wikipedia.org/wiki/Sodium_chloride
The figure above the IUPAC name is the structure.

 

[sciencebooks]

Erm sorry but I don't understand your question. Isn't solid NaCl just 1 big structure with the Na+ and Cl- ions bonded to each other ionically? What do you mean by intramolecular and intermolecular?

Wondering the same thing. Wouldn't it form the lattice arrangement of ionic charges in one huge structure?

 

[sciencebooks]

http://en.wikipedia.org/wiki/Sodium_chloride
The figure above the IUPAC name is the structure.

Lol, okay, yep, we were thinking of the same thing.

 

[Raiden2012]

Great minds we have hmm

 

[yellowjellybean]

When you go through phase changes like melting NaCl or a solid metal into a liquid, you are breaking intermolecular forces, but I metallic bonds and ionic bonds aren't intermolecular forces??? If I'm still not making any sense, thanks anyway it's not that big of a deal.

 

[Raiden2012]

Well I guess you can consider them intermolecular forces but NaCl are not molecules per se. What you're doing is breaking the ionic bonds between the ions. Likewise for metals, you break the metallic bonds

 

[joshua201]

You can call them intermolecular if you wish. But they're actually ionic bonds.