/sci/ - Science & Math » Thread #12457522

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Cold water Freezing instantly

Anonymous Sat 12 Dec 19:04:14 2020 No.12457522 View Reply Original Report

Quoted By: >>12457590

ATTENTION ATTENTION /SCI/ ATTENTION ATTENTION ATTENTION \SCI\TARDS NEEDED

I'm enlisting the help of the /sci/ army!!!!!

haha anyways I'm making a youtube video on a novel description of supercooled liquids I've thought of. Here's a video if u dont know what im talking about when i say supercooled liquids

https://youtu.be/ph8xusY3GTM

This description is so painfully obvious to me and yet I see it nowhere online. I’m relying on the /sci/ army to be my final net against being cancelled for stealing another’s idea, by roasting the fuck out of me if somebody has already described supercooled liquids (or metastable states in general) in this fashion, thanks friends. Also, fact check me thanks. I’ll be going over some very basic principles in a weird and perhaps novel way, so if you think im wrong in my description of basic concepts, kill me.

OP Sat 12 Dec 2020 19:08:09 No.12457533 Report

Quoted By: >>12457590

Liquids and gases (called fluids when referring to each at the same time) are composed of molecules constantly running around and bumping into each other (which is why they freely move around), while solids are composed of molecules locked into place with each other, vibrating and surrounded on all sides by the other atoms of the solid. All things can change from fluids to solids (and back again) depending on the temperature of their environment. This means that temperature changes the speed of molecules in fluids. Colder temperatures result in slower moving fluids, meaning for a liquid to turn into a solid, it must first be at a temperature where all of its molecules are not moving.

When a fluid turns into a solid, all of its molecules arrange themselves in a very orderly way, especially when you compare them to how they were randomly arranged in the fluid previously. We call this process freezing. A freezer is named because it is cold enough to freeze water. If we leave a bottle of water in there long enough it will become the temperature of the freezer, which is somewhat colder than freezing. Meaning the water will be at a temperature even colder than the temperature at which liquid water molecules do not move. However as you clearly know the water in the bottle remains a liquid.

Think about the process of rearrangement: it requires movement. If your room is messy, you have to move things to put them away. Remember when I said that freezing is the process of molecules arranging themselves very orderly, they have to move to do that. That makes things difficult since freezing requires the molecules to also not be moving. If the liquid is shaken however, this fixes that problem. The molecules use the speed they’re given to arrange themselves in an orderly way. They want to do this because they are all little magnets that are attracted to one another.

OP Sat 12 Dec 2020 19:09:18 No.12457538 Report

Quoted By: >>12457590 >>12457605

So then you might be asking why does ice freeze in ice trays in the freezer? The immediate explanation is that the air in your freezer is moving because of fans pumping cold air in. Thus giving the water molecules enough speed to begin freezing. However if you fill a plastic bottle, with pond water (or tap water depending on where you live), screw the cap on and put it in the freezer, it will freeze. This is because water doesn’t very much like having other things swimming around in it. I say this because a foreign object will never stop moving in water. The water molecules can’t get comfortable with anything other than other water molecules, this is because water molecules are little magnets. Foreign objects force individual water molecules closer together in ways that create a magnetic reaction, creating motion. This allows molecules to arrange themselves if they want to freeze.

OP Sat 12 Dec 2020 19:16:29 No.12457561 Report

Quoted By:

If you're interested, I have a 1$ tier on my patreon (I can't do it for free) I've made just for people who find me shamelessly self promoting but then actually happen to be interested and eventually like my content haha. Gimme a dollar

https://www.patreon.com/user?0=u&1=%3D&2=4&3=6&4=8&5=2&6=4&7=2&8=4&9=0&utm_medium=social&utm_source=twitter&utm_campaign=creatorshare

Anonymous

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Anonymous Sat 12 Dec 2020 19:24:26 No.12457590 Report

Quoted By:

>>12457522
>>12457533
>>12457538

Anonymous

Anonymous Sat 12 Dec 2020 19:28:12 No.12457605 Report

Quoted By:

>>12457538
You can just have irregular nucleation sites on the internal surface of the container and even pure water will freeze before reaching the ability to supercool.

To be honest I haven't seen anything here that hasn't been talked about before by water scientists. I'd suggest looking into the Mpemba effect for more stuff about how energetics of water and the ability to freeze. Freezing is an endothermic process.

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