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Topic: Wood's metal  (Read 4476 times)

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mithrilhack

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Wood's metal
« on: August 04, 2005, 05:24:33 PM »
How can wood's metal have a lower boiling pt than it's constituent parts?
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Offline Mitch

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Re:Wood's metal
« Reply #1 on: August 04, 2005, 06:00:57 PM »
How can water have a higher melting point than its constituent parts of Hydrogen and Oxygen gas? If you change the Chemistry you change the chemical properties and physical properties of the substance.
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Offline Donaldson Tan

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Re:Wood's metal
« Reply #2 on: August 04, 2005, 06:11:39 PM »
weaker metallic bonding. try to explain that in terms of metallic lattice structure.
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mithrilhack

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Re:Wood's metal
« Reply #3 on: August 05, 2005, 11:10:22 AM »
Mitch it's an alloy, not a chemical compound.
@geodome
So how does the lattice structure change?
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Offline Donaldson Tan

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Re:Wood's metal
« Reply #4 on: August 05, 2005, 02:26:52 PM »
how does having different-sized metal cation in the lattice affect its packing?

different cation would have different proton number and ionic radii. how does that affect the strength of the metallic bonding?

overall, how does it all contribute to overall weaker extent of metallic bonding, leading to a lower melting point?
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"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006
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