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Questions tagged [freezing]

The process of a liquid changing into the solid phase

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Frozen coffee that will not defrost at room temperature [closed]

A few weeks ago I froze some Starbucks iced mocha in an aluminum water bottle that is not insulated. Three days later the coffee which has been kept on the kitchen counter has still not defrosted in ...
Bunchy Bookles's user avatar
1 vote
1 answer
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If one shoves a compressed air nozzle into a tap, then the tap water freezes

As seen here on this youtube video: https://youtu.be/B-Zi73oBDZE?si=ZvF3y4Mc6qfQP2GD&t=145 Why does this happen ? Details for those wanting them: image an electronics compressed gas duster (like &...
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Why did my saline solution not expand significantly when frozen?

Three days ago, I put a fully saturated solution of salt in water in an open-top glass jar. I wrapped the jar in a plastic bag in case it exploded, but when I returned in the morning, it had formed ...
Robert Goddard-Wright's user avatar
12 votes
3 answers
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Can water at absolute zero still be liquid?

We see this interesting phenomenon with water bottles in cold chillers left undisturbed for a long time; the water within remains a liquid, but a small kinetic shock, such as a tap, shake or pour, ...
ConnieMnemonic's user avatar
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Chemical Potential after Freeze-Out

I've been wondering what happens to the chemical potential $\mu$ of a particle (more specific, a fermion) with a mass m that freezes out around a temperature of $T\sim m$. I understand that the ...
BCT's user avatar
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Why are my ice cubes sticking in their containers?

I make my ice in those little round to-go containers that usually hold sauces/dressings. When using the clear containers, the ice sticks to it and requires heat or violence to get it out. When I use ...
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At what temperature does flowing water start to freeze?

We know that flowing water remains liquid even in the below-zero temperatures (a good example is rivers in arctic regions). Of course water doesn't remain liquid forever if temperature goes down ...
Snack Exchange's user avatar
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Making energy out of freezing ice

Just a thought from a dream Since water expands so greatly when frozen could it be possible to freeze the water in a metal cylinder but one side is like a car piston with a very high gear ratio which ...
Yusuf Kaya's user avatar
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1 answer
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Does fractional freezing always happen in mixtures that are prone to it?

Let's assume that we have a mixture that is prone to fractional freezing, such as water with table salt, or water with alcohol. If we place the mixture in a sufficiently cold environment, will we ...
rumtscho's user avatar
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Why doesn't 250 ml of tap water kept outdoor in -2 °C freeze to ice?

I kept 250 ml of tap water in a thin plastic container out in the garden. The outdoor temperature has been varying around -2 °C most of the night and rises only to 0 °C during the day. I was expecting ...
Sirius Scientist's user avatar
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How can water expand as it cools and freezes? [duplicate]

It's well-known that water expands when it freezes to form ice, and perhaps less well-known to the common person that it actually begins expanding while still in liquid form when the temperature drops ...
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Freezing a supercooled liquid: is there a name for this?

A supercooled liquid, i.e. a liquid below its freezing point (e.g. water), can become solid quickly by a mechanical perturbation. Is there an official name for this particular kind of phase transition,...
rmdmc89's user avatar
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For liquids where the solid doesn’t float, how does the liquid freeze?

Take for example water; when water freezes, ice floats, and given a pond or something during the winter, the pond seems to freeze from the top down. Considering a similar circumstance, let’s say we ...
Justin T's user avatar
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Calculating the amount of salt to add to water to obtain a specific freezing temperature for the mixture

I am trying to determine a formula which can be used to determine how much salt (specifically sodium chloride) in grams to add to a liter of water in order to cause it to freeze at a specified ...
Jon W's user avatar
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What causes this frost pattern on my windshield?

I was walking back to my car yesterday when I noticed the frost on the back windshield formed these long "straight" lines: The temperature was about -10C and I was wondering what the ...
Jspang's user avatar
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River freezing conditions

Quite uncommon -8°C here in Hamburg at the moment I write, and I thought: Surely our local rivulet is frozen over. In retrospect this was silly, the "rivulet" is 3rd order and has a very ...
Hauke Reddmann's user avatar
7 votes
1 answer
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Why do some oranges freeze while others don't at the same temperature?

I buy fresh oranges wholesale so I could enjoy fresh juice every morning, I store them in the fridge (not the freezer) so they can last for a few weeks (yes, about 60% of my fridge content at any ...
Alex Morales's user avatar
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1 answer
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What’s the intuition behind snowflake symmetry? [duplicate]

What’s a more rigorous description of why snowflakes are so symmetric? The general explanations of why they’re symmetrical are: Theyre not. The branches actually vary. Snowflakes are somewhat ...
Al Brown's user avatar
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What do you call a factor that isn't a dependent, independent, or controlled variable?

I'm doing an experiment investigating the Mpemba effect. I measured some factors that may have contributed to the time it took the water to freeze (defined as the point where it becomes a total solid, ...
prata's user avatar
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59 votes
4 answers
13k views

How strong is the force of ice expanding when freezing?

Why does water contract on melting whereas gold, lead, etc. expand on melting? reminded me about something I've been wondering myself for some time. We know that water expands as it freezes. The force ...
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Frozen dew explanation

First, look at this picture: This is frozen dew/rain, it was cold this morning and it might have rained during the night but that's not really relevant I think. Here are my questions: Why is the ...
Silex's user avatar
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Froze or freeze bottle Exploding

I kept a bottle in my freezer with full water overnight. When my mom took it out and put it in normal condition, it blasted after a few minutes. More surprisingly the bottle was made of aluminum. Pls, ...
Anshul tiwari's user avatar
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1 answer
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How could you make realistic Frostwalker boots? [closed]

In Minecraft, as you might know, you can enchant boots with Frostwalker, which freezes water as you walk over it. I've been wondering if this would be possible in real life, and if so, how? My idea is ...
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What happens during freezing?

I did an experiment investigating the Mpemba effect and I found that a contributing factor to why hot water freezes faster than cold water is due to the amount of time the water takes to freeze. As in ...
prata's user avatar
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Can water in solid state (ice) be at such a low temperature that in contact with liquid water at 0, freezes it and leaves it at a lower than zero C°?

I recently had a discussion with a bio engineer and we are both pretty convinced of different outcomes for the same situation: Say you have a glass half full of liquid water at 0°, could you get a ...
apacay's user avatar
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Can the freezing point of Nitrogen be reduced?

There was an interesting Q/A about mixing helium and nitrogen. Is there anything that can be added to liquid nitrogen to reduce it's freezing point to below 63 kelvin?
Paul De Jong's user avatar
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What happens as water gets infinitely close to freezing?

Say, for the purposes of conjecture, that you have the necessary handwavium to uniformly cool it to any temperature you want, and decide to cool the water down to a temperature infinitely close to $0°$...
In Hoc Signo's user avatar
19 votes
4 answers
4k views

Freezing water: in layers or all at once?

(First question here on physics, hope it is OK) Since it is getting cold here in Berlin, Germany and temperatures are falling below the freezing point, we want to make a little ice rink in our back ...
topskip's user avatar
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Do 2 sodas in the fridge cool faster or slower than one soda in the fridge?

If you put 1 room temperature soda in the fridge, will it take longer to chill than if you put 2 in the fridge, or will the 2 chill faster, or does not make a difference? I guess, does the inherent ...
cocesaryume's user avatar
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Is there a difference in speed of ice formation between a thick and thin water layer?

Here in the Netherlands we are always trying to get ice as soon as possible so that got me thinking. If you would build a thick layer of ice by spraying a layer of water and wait till its frozen, is ...
Michael Hop's user avatar
1 vote
1 answer
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Frozen liquid mirror space telescope

I saw Liquid-Mirror Telescopes. With care, a liquid mirror can make a diffraction limited telescope. The Wikipedia article on Liquid mirror space telescopes talks about various designs for use in ...
mmesser314's user avatar
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Why isn't the surface of this frozen iced tea smooth?

Why is the surface of the iced tea in the pictures below so uneven? To give more details, today I tried (and failed) making iced tea. I placed a cup of hot water, after removing the tea bag, in my ...
Shay Ben Moshe's user avatar
1 vote
0 answers
31 views

Crystals, symmetries in mixture

What would happen to the crystal structure of ice, if i freeze salt water? What changes in symmetry can i expect? I do not know the terminology for this stuff...but in what 'subclass' or 'subfamily', ...
Leviathan's user avatar
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Why can you find running water lower than $0^\circ \text{C}$?

I was looking at the phase diagram for water: It seems there is not much of a region on the diagram at which you can be in the liquid phase, for temperatures lower than $0^\circ \text{C}$. I am ...
Vishal Jain's user avatar
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1 answer
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Does Low Temperature Attract Negatively Charged Particles?

I'm studying the effects of temperature in producing electricity like in clouds that produces lightning. Since dark clouds during a thunderstorm is below freezing point, it attracts negatively charged ...
user63053's user avatar
0 votes
1 answer
231 views

What happens if water is prevented from freezing due to pressure; where does the energy go?

Say you have an iron (or whatever strong material) ball filled with water, and you leave it in a frozen environment (say $-100\ \mathrm{^\circ C}$); once it gets cold enough, the water will want to ...
Dave Cousineau's user avatar
0 votes
2 answers
280 views

Can vodka turn to a solid?

How can I turn vodka into a solid? If I boil it, and then cool completely, will it still be a liquid? Is there any way to turn vodka to a solid?
Mbo's user avatar
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1 vote
2 answers
425 views

Melting ice made with tap water

I recently froze some tap water in plastic bottles and I later made the ice melt completely (the idea was keeping ice bottles nearby me to fight the heat). When the water returned to liquid a lot of ...
AoZora's user avatar
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2 votes
2 answers
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Is the Mpemba effect exclusive to water?

Is the Mpemba effect exclusive to water ? So I was reading this post about really cool phenomena where hot water freezes faster than cold water. But it only talks about water. Even online student ...
user avatar
2 votes
1 answer
629 views

Does elevation change the temperature at which snow falls?

I have read that snow falls at 32 degrees F. While at an altitude of nearly 8,000 feet above sea level, I found it snowing, but the temperature was more than 40 degrees F. Perhaps the indicator is ...
Village's user avatar
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0 votes
5 answers
3k views

Is the pressure inside a closed refrigerator same as atmospheric pressure?

What is the pressure in my deep refrigerator where water becomes ice. Is it lower than atmospheric pressure or higher or same? And how I can mesure it ?
Al Faisal Redoy's user avatar
2 votes
2 answers
7k views

How long does it take to cool down a drink with ice?

If I have a bottle or container with X fluid ounces of water at temperature Y (say, fridge temperature or room temperature), and I put ice or ice sticks (composed of water) in it that make up Z fluid ...
Andrew's user avatar
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3 votes
4 answers
763 views

Does freezing point depression also affect the speed at which something melts?

If you have a pure water frozen, then it should begin to melt if you apply 33°F air to it. If you have impure water that's frozen, it's melting temperature might have dropped to 30°F. If you apply ...
Tony DiNitto's user avatar
3 votes
4 answers
781 views

Would a helium ballon pop or freeze in space?

I have read these questions: Why doesn't Helium freeze at 0K? Do objects in space freeze immediately? Now I do understand that a helium balloon cannot float up to space. But let's assume this ...
Árpád Szendrei's user avatar
-1 votes
2 answers
492 views

Is there any reason to remove the air from a bottle of water before you freeze it?

When you put a sealed bottle of water in the freezer it explodes, (I get this part). I was told that filling it with 100% water (removing the air) first stops the bottle from exploding as this allows ...
Rory Shaughnessy's user avatar
3 votes
2 answers
264 views

Temperature of items from a freezer [duplicate]

I've read that all items in a freezer are at the temperature at which the freezer are set to (obviously items have to be in the freezer long enough). So, if I put normal tap water in a freezer which ...
rock-on's user avatar
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-1 votes
1 answer
272 views

speed of freezing vs. moving [closed]

An idea came to my mind and like to discuss it. We know that out there in the space the absolute zero (aka. -273 C) is almost reached where all the particles and atoms would freeze up and stop giving ...
wisdom's user avatar
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1 vote
1 answer
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How do you calculate the rate of ascent for frozen seawater in seawater?

Assuming 1m3 sphere of seawater were flash frozen at a depth of 1km, how rapidly would it start ascending to the surface given the buoyancy? Assuming we could ignore bonds between the surface of ...
J. Doe's user avatar
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1 vote
1 answer
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Are there other properties besides lower boiling point that make isobutane a better refrigerant than butane?

Asked differently, if -1C is low enough for the application is there any reason not to use butane rather than isobutane as the working fluid in a refrigeration system?
bigjosh's user avatar
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1 vote
3 answers
2k views

How fast can water from a lake be frozen?

Warning: this question contains spoilers for the first episode of 2018 TV series Lost in Space by Netflix. On the series, the Robinsons spaceship, Jupiter, falls on a planet, and it’s submerged in ...
Marcos Tanaka's user avatar