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Author Topic: Can A Diamond Melt ?  (Read 13113 times)

neilep

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Can A Diamond Melt ?
« on: 21/10/2008 18:54:29 »
Dear Meltologists !

See this diamond ?




Nice eh ?

Diamonds are like...well 'ard aren't they ?

If there was gonna be a fight between a diamond and an emerald...then the diamond would win every time yes ?

But, when ewe look at it..it only looks like a piece of glass.....does it melt ?...can one melt a diamond and cast it to become something else ?

What happens to a diamond then, when you gradually increase it's temperature ?..does it burn ?..does it just explode ?...and why ?



As a firm believer in empirical study, I happen to know that my neighbour has a diamond earring...so I took it and applied a lit match to it !!...nothing !. the match did not even scare the diamond at all !.....My neighbour protested though, quite angrily I think...he was still wearing it !.....I tried, as I usually do, to explain that it's all in the name of science and that he should relish and cherish this opportunity..but.....even as the ambulance drove him away I could hear him still protesting !......I just don't get it !!


anyway, if ewe could help me with my diamond orientated questions I would be most grateful !


Thanking ewe



Neil
Diamond Geeza
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx








« Last Edit: 16/03/2009 17:23:11 by neilep »

blakestyger

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Re: Can A Diamond Melt ?
« Reply #1 on: 21/10/2008 19:16:12 »
3547 Celsius.

neilep

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Re: Can A Diamond Melt ?
« Reply #2 on: 21/10/2008 19:21:50 »
3547 Celsius.

Is that as hot as your chillies ?  ;)

Thank ewe blakestyger

rosalind dna

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Re: Can A Diamond Melt ?
« Reply #3 on: 21/10/2008 20:57:12 »
I thought that diamonds or quartz couldn't melt since they are formed from carbon.

RD

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Re: Can A Diamond Melt ?
« Reply #4 on: 22/10/2008 22:01:27 »

Bored chemist

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Re: Can A Diamond Melt ?
« Reply #5 on: 23/10/2008 05:54:39 »
Quartz isn't carbon, it's silicon dioxide.

lightarrow

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Re: Can A Diamond Melt ?
« Reply #6 on: 23/10/2008 14:58:11 »

But, when ewe look at it..it only looks like a niece of glass.....does it melt ?...can one melt a diamond and cast it to become something else ?

Not at normal pressure, you need at least ~ 100 bar:
http://dao.mit.edu/8.231/CarbonPhaseDia.htm

At normal pressure it sublimate (directly from solid to vapour).

roxeen

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Re: Can A Diamond Melt ?
« Reply #7 on: 15/03/2009 10:07:14 »
To know more about the chemical properties of diamond, visit this link:




Edited by mod, link removed. Sorry roxen but we do not allow posts which do nothing other than promote a site.
« Last Edit: 15/03/2009 14:11:26 by ukmicky »

Raghavendra

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Re: Can A Diamond Melt ?
« Reply #8 on: 16/03/2009 09:54:34 »
hello misss

 you must know that it is an isotope of carbon it can melt!!! 

                   aren't they !!!

lightarrow

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Re: Can A Diamond Melt ?
« Reply #9 on: 16/03/2009 16:26:11 »
hello misss

 you must know that it is an isotope of carbon it can melt!!! 

                   aren't they !!!
What (the heck) are you talking about?

neilep

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Can A Diamond Melt ?
« Reply #10 on: 16/03/2009 17:25:03 »
hello misss

 you must know that it is an isotope of carbon it can melt!!! 

                   aren't they !!!
What (the heck) are you talking about?



They just love bumping my threads back to the top !  ::) ::)..can ewe blame them ?..after all..it's me !! *le sigh*


lightarrow

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Can A Diamond Melt ?
« Reply #11 on: 16/03/2009 17:34:27 »
hello misss

 you must know that it is an isotope of carbon it can melt!!! 

                   aren't they !!!
What (the heck) are you talking about?



They just love bumping my threads back to the top !  ::) ::)..can ewe blame them ?..after all..it's me !! *le sigh*


No, it's just that I don't understand what the concept of "isotope" has to do with the (your) question.
P.S. (it's not you)  :)

lancenti

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Can A Diamond Melt ?
« Reply #12 on: 17/03/2009 02:51:14 »
... I have the strangest inkling he messed "isotope" up with "allotrope".

lightarrow

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Can A Diamond Melt ?
« Reply #13 on: 17/03/2009 14:31:46 »
... I have the strangest inkling he messed "isotope" up with "allotrope".
I had that strange inkling too...  :)
Anyway, even if it was "allotrope", it would be incorrect the same, because there isn't any allotrope of carbon which melts (at standard pressure).

Bored chemist

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Can A Diamond Melt ?
« Reply #14 on: 17/03/2009 20:28:02 »
True, but what's so magic about standard pressure?
At least some allotropes will melt at some pressure or other.

lightarrow

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Can A Diamond Melt ?
« Reply #15 on: 17/03/2009 20:40:51 »
True, but what's so magic about standard pressure?
At least some allotropes will melt at some pressure or other.
Ok, but would you say that some of them "melts" and others don't, independently on pressure?

yor_on

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erickejah

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Can A Diamond Melt ?
« Reply #17 on: 18/03/2009 01:48:50 »
can this experiment be added to the "Kitchen Science",  :P :D :D

Raghavendra

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Can A Diamond Melt ?
« Reply #18 on: 18/03/2009 06:35:25 »
 Hello guys don't take tension!!! you can't burn carbon di-oxide!
 
          So even when you keep it contact with the lava! it doesn't melt, and yu should know these that in japan there is still some diamonds found near oceans, due to volcanic erruption the diamond which is present in the deep of the earth, come out....

If any wrong please sujjest !!

Chemistry4me

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Can A Diamond Melt ?
« Reply #19 on: 18/03/2009 06:37:38 »
What does carbon dioxide have to do with anything?

Raghavendra

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Can A Diamond Melt ?
« Reply #20 on: 18/03/2009 07:32:41 »
Hmm good question ??? Bingo

 

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