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(IFL Science)   Ice 0.9   (iflscience.com) divider line
18
    More: Cool, Ice, Solar System, Crystal structure, Crystal, Earth, Solid, Planet, Science  
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1649 clicks; posted to STEM » on 03 Feb 2023 at 8:25 AM (6 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



18 Comments     (+0 »)
View Voting Results: Smartest and Funniest
 
Demetrius [TotalFark] [OhFark]
2023-02-03 6:51:55 AM  
I understand it comes in different flavors.

i0.wp.comView Full Size
 
cfreak [TotalFark]
2023-02-03 9:02:54 AM  

Demetrius: I understand it comes in different flavors.

[i0.wp.com image 557x309]


Done in one.

/ I'd like amorphous ice with cherry
 
Tom-Servo
2023-02-03 9:17:21 AM  
Huh. They actually linked to family guy Ball In A Cup video. Additionally, Subby's mom is a scientist:

"The scientific name for this game is ball milling..."
 
Arkanaut
2023-02-03 9:28:22 AM  
Nice, nice, very nice;
Nice, nice, very nice;
Nice, nice, very nice-
So many different people
In the same device.
 
kolpanic
2023-02-03 9:31:37 AM  
Fark user imageView Full Size
 
unchellmatt [TotalFark]
2023-02-03 10:06:09 AM  
Bokonon approves of your shenanigans.
 
Muta
2023-02-03 10:14:57 AM  
Ice Nine?
 
ajgeek [TotalFark]
2023-02-03 10:57:06 AM  
At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.
 
Myk-House of El [BareFark] [OhFark]
2023-02-03 10:58:49 AM  
Fear Of Black Hat (N.W.H.) - Monsters of Rap Tour - backstage scene
Youtube RmbVf2a4v0c


/2:18 if it doesn't start at the right time....
 
Ivo Shandor [TotalFark] [OhFark]
2023-02-03 1:02:54 PM  

ajgeek: At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.


When a substance freezes, it releases heat energy.

To make something freeze, you have to draw heat out of the system. If you remove heat from a glass of water, its temperature decreases. If you remove heat from a mixture of ice and water, the temperature stays constant but some of the liquid turns into a solid.
 
ajgeek [TotalFark]
2023-02-03 1:33:30 PM  

Ivo Shandor: ajgeek: At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.

When a substance freezes, it releases heat energy.

To make something freeze, you have to draw heat out of the system. If you remove heat from a glass of water, its temperature decreases. If you remove heat from a mixture of ice and water, the temperature stays constant but some of the liquid turns into a solid.


I think we're having the same conversation but in different ways.
"Releasing heat" directly implies exothermic reaction. Freezing isn't a spontaneous "release" of heat; it's being drawn out by an environment that wants that heat to reach equilibrium, and I think that distinction is important. So to say that it releases a huge/immense amount of heat upon recrystallization indicates something that doesn't really follow the thermodynamic ruleset.
 
Ivo Shandor [TotalFark] [OhFark]
2023-02-03 1:40:33 PM  

ajgeek: Ivo Shandor: ajgeek: At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.

When a substance freezes, it releases heat energy.

To make something freeze, you have to draw heat out of the system. If you remove heat from a glass of water, its temperature decreases. If you remove heat from a mixture of ice and water, the temperature stays constant but some of the liquid turns into a solid.

I think we're having the same conversation but in different ways.
"Releasing heat" directly implies exothermic reaction. Freezing isn't a spontaneous "release" of heat; it's being drawn out by an environment that wants that heat to reach equilibrium, and I think that distinction is important. So to say that it releases a huge/immense amount of heat upon recrystallization indicates something that doesn't really follow the thermodynamic ruleset.


Look up those hand warmers which use a sodium acetate solution if you want an example of exothermic crystallization. Before you trigger it, it contains a supersaturated solution at room temperature. Once crystals start to form, it heats up to the melting point and then stays near that temperature as slush until all of the liquid has frozen.
 
hegelsghost
2023-02-03 2:05:19 PM  
Didn't the prophet Bokonon predict this?
 
ajgeek [TotalFark]
2023-02-03 4:24:05 PM  

Ivo Shandor: ajgeek: Ivo Shandor: ajgeek: At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.

When a substance freezes, it releases heat energy.

To make something freeze, you have to draw heat out of the system. If you remove heat from a glass of water, its temperature decreases. If you remove heat from a mixture of ice and water, the temperature stays constant but some of the liquid turns into a solid.

I think we're having the same conversation but in different ways.
"Releasing heat" directly implies exothermic reaction. Freezing isn't a spontaneous "release" of heat; it's being drawn out by an environment that wants that heat to reach equilibrium, and I think that distinction is important. So to say that it releases a huge/immense amount of heat upon recrystallization indicates something that doesn't really follow the thermodynamic ruleset.

Look up those hand warmers which use a sodium acetate solution if you want an example of exothermic crystallization. Before you trigger it, it contains a supersaturated solution at room temperature. Once crystals start to form, it heats up to the melting point and then stays near that temperature as slush until all of the liquid has frozen.


No, that's different. The snap precipitates a nucleation of crystalized NaAc into the supersaturated solution, creating a chain reaction which causes the liquid to crystallize (precipitating out of the water), so we have an inversion where it's water suspended in a NaAc crystal.

This is a single chemical being refrozen and... emitting heat? I'm going to chalk this up to bad language use. Thank you for the conversation.
 
New Farkin User Name
2023-02-03 4:58:18 PM  

ajgeek: Ivo Shandor: ajgeek: Ivo Shandor: ajgeek: At -200 degrees, isn't that just effectively ice "sand" once milled?

What got my attention is the immense release of heat once recrystallized. How does something freezing release heat? The concept of freezing is literally drawing heat out of something.

When a substance freezes, it releases heat energy.

To make something freeze, you have to draw heat out of the system. If you remove heat from a glass of water, its temperature decreases. If you remove heat from a mixture of ice and water, the temperature stays constant but some of the liquid turns into a solid.

I think we're having the same conversation but in different ways.
"Releasing heat" directly implies exothermic reaction. Freezing isn't a spontaneous "release" of heat; it's being drawn out by an environment that wants that heat to reach equilibrium, and I think that distinction is important. So to say that it releases a huge/immense amount of heat upon recrystallization indicates something that doesn't really follow the thermodynamic ruleset.

Look up those hand warmers which use a sodium acetate solution if you want an example of exothermic crystallization. Before you trigger it, it contains a supersaturated solution at room temperature. Once crystals start to form, it heats up to the melting point and then stays near that temperature as slush until all of the liquid has frozen.

No, that's different. The snap precipitates a nucleation of crystalized NaAc into the supersaturated solution, creating a chain reaction which causes the liquid to crystallize (precipitating out of the water), so we have an inversion where it's water suspended in a NaAc crystal.

This is a single chemical being refrozen and... emitting heat? I'm going to chalk this up to bad language use. Thank you for the conversation.


Water at 32 degrees has more energy than ice at 32 degrees. Despite having the same thermal energy, the water has more degrees of freedom and the molecules are physically moving more. For it to freeze, it needs to release that energy. It gets released as heat. It's the exact same cause of evaporative cooling
 
marklar [TotalFark]
2023-02-03 5:55:08 PM  
So no more mud?

Something I didn't realize about Cat's Cradle until a few years ago (I've read the book several times) is that the title of the chapter when the idea of Ice Nine is first brought up is "No more mud". But then during the last rites, people are mud. Seems like that Vonnegut guy knew how to write.
 
BarryJV [BareFark] [OhFark]
2023-02-03 10:38:22 PM  

New Farkin User Name: Water at 32 degrees has more energy than ice at 32 degrees. Despite having the same thermal energy, the water has more degrees of freedom and the molecules are physically moving more. For it to freeze, it needs to release that energy. It gets released as heat. It's the exact same cause of evaporative cooling


Yes.

This can be a tricky concept to understand but it's easier if you think about it in reverse.

Imagine you have some ice. You apply heat and some of the ice turns to water. That water/ice mixture is still at 0C and will stay at that temperature unless you add more heat. This is because the heat you added went into the process of liquifying some of the ice, not into increasing the temperature.

I might suggest that anyone who is interested looks up enthalpy of fusion but there's a good chance that you'll end up none the wiser.
 
dbirchall [TotalFark] [OhFark]
2023-02-04 4:18:26 PM  
FTFA:Something to remember the next time you're answering a Zoom call covered in string cheese: you're not disorganized, just amorphous.

No, you're disorganized.  Amorphous means you lack a clearly defined shape, and string cheese or no, you're probably clearly humanoid.

Something to remember when reading IFLScience: IFLScience clearly does not love (or give a fark about) vocabulary or correctly using big words.

And while I'm being a hater, speaking as someone who spends way too much time on the boring tedious little bits (or, to be honest, reading Fark while acquiring the data that will then be fed into the boring tedious little bits) this old webcomic is very true:

files.explosm.netView Full Size
 
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