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Topic: Diamond & Silicon oxide  (Read 6245 times)

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H89

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Diamond & Silicon oxide
« on: October 28, 2005, 05:31:42 AM »
Why is the melting point of silicon oxide much lower than that of Diamond when they both have similar structures?
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Offline Mitch

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Re:Diamond & Silicon oxide
« Reply #1 on: October 28, 2005, 12:03:53 PM »
They do have the same structure?
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Offline Donaldson Tan

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Re:Diamond & Silicon oxide
« Reply #2 on: October 28, 2005, 08:51:05 PM »
diamond and silicon dioxide share similar structure.

hint: what bonds are broken when these 2 substances are melting?
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H89

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Re:Diamond & Silicon oxide
« Reply #3 on: October 30, 2005, 08:08:05 AM »
Well you have to break C-C bonds in diamond & in silicon oxide the Si-O bonds....but the thing is that the bond strength of Si-O is more than that of C-C!!!!!
Pls *delete me*!!!!!!!!!!!!!!!!!!!!  :-[ :-[ :-[ :-[
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Offline xiankai

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Re:Diamond & Silicon oxide
« Reply #4 on: October 31, 2005, 08:11:33 PM »
u need to break more than just one bond.
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