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Topic: Do all substances become solids under extreme pressure?  (Read 5099 times)

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Offline raorian

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Do all substances become solids under extreme pressure?
« on: November 11, 2016, 04:48:56 AM »
I have some follow-up questions but first this clarification.

Offline Arkcon

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Re: Do all substances become solids under extreme pressure?
« Reply #1 on: November 11, 2016, 07:31:14 AM »
Yes.  Interestingly, one thing only becomes solid at high pressure.  Do you know another process to solidify anything?  And do you know the one thing that requires high pressure to solidify, and why?

Sorry to ask a bunch of questions, but that's what we do here.  We want to help you learn to help yourself.  Its all in the Forum Rules{click}.
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Offline raorian

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Re: Do all substances become solids under extreme pressure?
« Reply #2 on: November 11, 2016, 11:41:08 AM »
your statements are contradictory or you confused a word or two.

Yes = ALL substances become solids under extreme pressure.
Interestingly (implying an exception), on thing becomes solid at high pressure. I assume you meant One thing becomes liquid, and I assume it's water. Please correct me if I'm wrong.

Another process is obviously reducing the temperature.

I don't understand your statements. You sound smart because of your syntax though. please explain yourself.

Offline magician4

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Re: Do all substances become solids under extreme pressure?
« Reply #3 on: November 11, 2016, 03:36:01 PM »
Quote
(...) Interestingly (implying an exception), on thing becomes solid at high pressure. (...)
let me put it like this: there is a reason WHY he wrote
Quote
Interestingly, one thing only becomes solid at high pressure.
(meaning: this stuff is an exception to the rule of thumb, that everything sooner or later will freeze to a solid if you just cooled it enough, even without applying pressure)


... and no, he wasn't referring to water.

regards

Ingo


@ Arkcon:
Quote
(...), and why?
there are some trivial answers which seem to be false in this case
... and a lot of research still goin' on in understanding the solidification of suprafluid bose-einstein-condensates (which is the more precise description of the respective liquid)
what exactly did you have in mind?
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Offline Arkcon

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Re: Do all substances become solids under extreme pressure?
« Reply #4 on: November 11, 2016, 04:31:41 PM »
your statements are contradictory or you confused a word or two.

Sorry.

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Yes = ALL substances become solids under extreme pressure.

Yep.  I filled that in for you.

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Interestingly (implying an exception), on thing becomes solid at high pressure.


Nope.  Not the exception I meant.

Quote
I assume you meant One thing becomes liquid, and I assume it's water. Please correct me if I'm wrong.

Nope.  Not really the point I was going for.

Quote
Another process is obviously reducing the temperature.

Yes.  Good work.  I meant it was interesting that there's one substance that can't be solidified by lowing temperature, you have to use pressure in addition.

Quote
I don't understand your statements. You sound smart because of your syntax though. please explain yourself.

Maybe it will all come together as the original question expands.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Enthalpy

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Re: Do all substances become solids under extreme pressure?
« Reply #5 on: November 12, 2016, 04:40:39 AM »
[...] suprafluid bose-einstein-condensates [...]

Is the Bose-Einstein-condensation still considered as an explanation for superfluidity? Or is it more a tradition among books and courses?

Offline raorian

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Re: Do all substances become solids under extreme pressure?
« Reply #6 on: November 12, 2016, 09:01:14 AM »
It'll be some time until I figure out the bose-einstein thing

Could you just answer the question, though?

If I add pressure to (any) a gas or liquid will it eventually  become solid?

Offline AWK

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Re: Do all substances become solids under extreme pressure?
« Reply #7 on: November 12, 2016, 09:37:13 AM »
This also depends on temperature.
AWK

Offline raorian

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Re: Do all substances become solids under extreme pressure?
« Reply #8 on: November 12, 2016, 09:47:36 AM »
I am fully aware it also depends on temperature.

BUT

In high temperature,
and in very very very high pressure,
Will I always get a solid?

Offline Arkcon

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Re: Do all substances become solids under extreme pressure?
« Reply #9 on: November 12, 2016, 11:14:11 AM »
Now this last question is very general, but we don't have to be general, we can describe the states of any substance at any temperature and pressure.  We call this a phase diagram: https://en.wikipedia.org/wiki/Phase_diagram  Here's one for water
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Offline Arkcon

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Re: Do all substances become solids under extreme pressure?
« Reply #10 on: November 12, 2016, 11:18:36 AM »
You can see, at higher temperatures, it requires more and more pressure to maintain ice.
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Offline raorian

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Re: Do all substances become solids under extreme pressure?
« Reply #11 on: November 12, 2016, 12:00:13 PM »
actually from this graph, which I remember (I learned this 7 years ago haha), at 100 degrees celsius and infinite pressure I'd receive liquid.

correct me if I'm wrong.

Offline AWK

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Re: Do all substances become solids under extreme pressure?
« Reply #12 on: November 12, 2016, 12:56:07 PM »
Neither liquid nor gas - supercitical fluid.

https://www.wikiwand.com/en/Supercritical_fluid
AWK

Offline magician4

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Re: Do all substances become solids under extreme pressure?
« Reply #13 on: November 12, 2016, 02:09:54 PM »
[...] suprafluid bose-einstein-condensates [...]

Is the Bose-Einstein-condensation still considered as an explanation for superfluidity? Or is it more a tradition among books and courses?
I don't know if suprafluidity in general is considered to be a feature of liquid bose -einstein-condensates

however, last time I checked some respective literature , liquid He was considered to be a bose-einstein - condensate
... and it shows suprafluidity, amongst some other strange features (unusual high compressibility and so on... ).

hence my respective question @ Arkcon


regards

Ingo
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Offline magician4

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Re: Do all substances become solids under extreme pressure?
« Reply #14 on: November 12, 2016, 02:19:16 PM »
actually from this graph, which I remember (I learned this 7 years ago haha), at 100 degrees celsius and infinite pressure I'd receive liquid.

correct me if I'm wrong.

pls. take a look at the broader graph of the phase diagram of water:


( Eis = ice , Wasser = (liquid)water , Dampf = steam )

as you see, you're wrong.

regards

Ingo
There is a theory which states that if ever anybody discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened.
(Douglas Adams)

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