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Questions tagged [ice]

Use this for questions related to the solid phase of Water ($\mathrm{H_2O}$).

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6 answers
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Why won't there be any transfer of heat energy when ice at 0°C is in contact with water at 0°C in a closed container?

In my book, Concise Physics of Selina Publications for Class IX, it's written there that "If there is no transfer of heat between the two bodies placed in contact, they are said to be at the same ...
Kakiaririki's user avatar
3 votes
1 answer
66 views

Why does fat get stuck to ice after solidification?

Suppose we put ice cubes into soup, which consists of saturated fat in liquid form and water in liquid form. When we put ice cube inside of it, fat gets solidified and when we remove ice cube, fat is ...
NikoMolecule's user avatar
0 votes
1 answer
38 views

Water and ice, scales [closed]

There are scales with an identical bowl on each pan. We pour some amount of water into the first bowl. We pour less water and put an ice cube into the second bowl so the level of water in both bowls ...
Piotr H's user avatar
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0 votes
1 answer
65 views

What would happen if you add ice to an isolated system of water that is already at 0°C?

So here’s my question: Say there is some ice at -2°C. And water at 0°C. The ice is added to the water. Now this is a completely isolated system. There is no heat exchange whatsoever with the ...
Shakthi Weerawansa's user avatar
0 votes
1 answer
47 views

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
8 votes
2 answers
281 views

What may have caused these bizarre frost patterns on my car windows?

I went to my car a couple days ago in the morning, and I was amazed at the patterns I found on all the side windows, shown in the attached picture. No amount of googling revealed anything similar, so ...
Gregory Beaudoin's user avatar
1 vote
0 answers
28 views

Can hydrogen be stored in the crystalline structure of ice?

I recently read that when ice freezes to form hexagonal crystals, the space within the hexagon is in fact a vacuum. Could this space potentially be used to store burnable hydrogen gas? If so, would ...
Robert Goddard-Wright's user avatar
2 votes
1 answer
73 views

Running more stable in wintery conditions than walking

Maybe this is just a me-thing but I found when I run in snowy conditions I do not slip or fall unless I hit an unknown patch of ice. However, when I walk, I'm more likely to slip in general. Looking ...
joeyfb's user avatar
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0 answers
23 views

Can you crack a pipe by freezing the faucet or does it require a water volume between ice slug and closed pipe?

My understanding of a winter freeze breaking a pipe is that if you get an ice slug "somewhere" a few feet or more upstream of a closed faucet then any subsequent freezing will cause a ...
Tunneller's user avatar
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0 votes
2 answers
193 views

Why can ice melt below 0°C ?

In our common understanding, ice needs to be above 0°C to melt. I have now done an experiment: a piece of glass covered with ice on one side and a heating module on the other end. Placing it in a -20°...
Smith Alice's user avatar
7 votes
3 answers
4k views

Why does more ice melt slower than less ice?

I know that ice cubes that are larger melt slower because of their surface area. However, when you put more ice cubes in a cup, all the cubes melt slower than a cup with less cubes. I hope this makes ...
user386598's user avatar
2 votes
1 answer
54 views

Mass of ice block needed to cool area

I intend to grow king oyster mushrooms inside a small greenhouse tent. The problem is the mushrooms prefer a temperature of approximately 60F. I'm trying to avoid needing to run an air conditioner to ...
shrimp's user avatar
  • 21
1 vote
2 answers
384 views

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 ...
user avatar
1 vote
1 answer
4k views

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
0 votes
1 answer
21 views

volume fraction of Ice Ih

we know that the volume fraction of a lattice like HCP is 74%. how can I calculate the volume fraction of a lattice of Ice Ih?
aaa's user avatar
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0 votes
1 answer
62 views

How much $\rm D_2O$ is in Earth's icepacks? [closed]

How much $\rm D_2O$, by mass and/or percentage, is locked in Earth's polar icepacks? Is the $\rm D_2O$:$\rm H_2O$ ratio the same as elsewhere?
RoUS's user avatar
  • 101
2 votes
1 answer
60 views

Is amorphous ice thermodynamically stable?

Amorphous ice is often produced by cooling liquid water below its glass transition temperature so fast that it does not have time to form ice crystals. The fact that this can only occur if the ...
tparker's user avatar
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1 vote
0 answers
13 views

Does osmotic pumping continue in plants at sub-zero temperatures?

Every now and again I stop and notice something which I find surprising, and try to work out why or how it happened. In this case I would like some assurance with the explanation. We have a bucket ...
Arthur H's user avatar
7 votes
2 answers
331 views

Is there a name for this phenomena that I observed?

I wish I had recorded this, but I was about to get some water from my filter as I was thirsty, but I noticed it had frozen in my refrigerator, so I poured some water into it from the refrigerator, and ...
Anders Gustafson's user avatar
3 votes
2 answers
135 views

On the Melting of the Arctic Ice [closed]

I have read that: Polar ice caps are melting as global warming causes climate change. We lose Arctic sea ice at a rate of almost 13% per decade, and over the past 30 years, the oldest and thickest ice ...
DDS's user avatar
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1 vote
0 answers
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What is an average estimate for the energy between molecules (crystal bonding energies) in an ice sphere as a function of temperature?

To give some context, during collision between ice particles, it might be that some parts of the particles splinter off. I am trying to quantify that by a gross assumption that the latter is ...
numa's user avatar
  • 11
0 votes
0 answers
137 views

Calculating the time for a 31$\rm ^\circ F$ ice cube to melt?

Is there a way to calculate how long it would take for an ice cube to melt in relation to it being surrounded by different levels of insulation (Is R-value the best way to measure insulation for this)?...
CodeCamper's user avatar
2 votes
1 answer
86 views

How is underwater pressure affected by ice?

Let's say I have a bucket of freshwater exposed to an environment where ice can form (less than 0C, normal atmospheric pressure, etc.). The bucket is on the ground so ice will only form on the top and ...
ch701x's user avatar
  • 23
0 votes
3 answers
1k views

Why does snow disappear without melting?

During very cold weather, snow often gradually disappear without melting.
Yitian Chen's user avatar
0 votes
1 answer
229 views

How does "regelation" actually works?

About the mechanism behind regelation, I read that "increasing the pressure causes a decrease in the melting point of ice and hence the ice at the point of application melts and the water thus ...
Ankit's user avatar
  • 8,220
-5 votes
2 answers
84 views

How can I keep my just bought dozen of popsicles cold as long as possible? [closed]

It's hot and I bought a dozen of pear popsicles. I discovered the fridge with freezer is dead. How can I keep them cold as long as possible so I don't have to eat them all at once?
MatterGauge's user avatar
4 votes
2 answers
432 views

Questioning solution of lake ice melting exercise

My thermodynamics teacher solved one exercise but I'm not convinced of his solution. The exercise asks this: A lake is covered by an ice sheet of thickness $D$ given. Ice latent fusion heat $\lambda$,...
Mattia's user avatar
  • 338
0 votes
2 answers
151 views

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
  • 157
0 votes
2 answers
496 views

If ice melting does not change the water level in a container - Why is everyone afraid of sea levels rising drasticing from ice sheets [duplicate]

I saw this experiment and am now wonder what I am missing in understanding if ice sheets melt why should they causing the sea levels to rise if it doesn't in a container ?
CanadianGoldGuy's user avatar
0 votes
0 answers
82 views

Why don't substances other than water ice show regelation?

We know that ice shows regelation,but why don't other substances like iron rods or wood show the same phenomenon? Is there something special about ice?
user avatar
0 votes
1 answer
422 views

What is the adiabatic temperature gradient of ice?

What is the adiabatic temperature gradient of ice at Earth's surface conditions? The adiabatic temperature gradient is a non-conductive spatial temperature difference caused by acceleration on thermal ...
David Jonsson's user avatar
0 votes
0 answers
112 views

Pressure of a vacuum left by melted ice

Let's assume we have a completely sealed uncompressible container filled with ice (without no air gap between the ice and the cap). At room temperature, when ice melts in water, as the density of ...
l4teLearner's user avatar
0 votes
1 answer
263 views

How do you know when to use specific heat for ice or water? [closed]

A copper calorimeter can with mass $\rm 0.100 \ kg$ contains $\rm 0.160 \ kg$ of water and $\rm 0.0180 \ kg$ of ice in thermal equilibrium at atmospheric pressure. If $\rm 0.750 \ kg$ of lead at $\rm ...
god david's user avatar
0 votes
2 answers
528 views

I'm really confused on the formula $Q=mL$ on phase change

"A 6.00 kg piece of solid copper metal at an initial temperature T is placed with 2.00 kg of ice that is initially at -20.0°C. The ice is in an insulated container of negligible mass and no heat ...
god david's user avatar
2 votes
0 answers
39 views

Force field lines in surface ice

The question Melting ice pattern shows a single hole melted in ice. The picture below shows multiple holes of the type described in that question, and there are lines in the ice between the melted ...
Rodger Mattlage's user avatar
0 votes
2 answers
102 views

How can this dimensional analysis of cooling rate account for a fixed ice cube volume

This Wikipedia article describes an analysis of the dependence of the cooling rate of an ice cube in water on the cube edge length, $L$. It claims that Buckingham's $\pi$ theorem predicts a cooling ...
mitte's user avatar
  • 396
34 votes
3 answers
6k views

How does a river freeze when the water keeps moving?

It's cold outside right now, and the biggest river in the country has frozen over. We're talking about a minimum of 500m in width, and I've no idea how deep (but some pretty big ships can sail there). ...
Vilx-'s user avatar
  • 3,101
1 vote
1 answer
637 views

Does liquid water remain at thermal equilibrium with ice at the melting point of ice?

Suppose, I have a glass of water. Now, I begin cooling it until it reaches $0^{\circ}\rm C$. Just after it reaches $0^{\circ}\rm C$, I stop cooling it. Again suppose I have an ice cube. Now I begin ...
tryingtobeastoic's user avatar
0 votes
1 answer
750 views

What is the resonant frequency of ice? How could you calculate the resonant frequency of ice for a cylinder of ice? [closed]

Can vibrating frequencies break apart the structure of ice? Or could electromagnetic frequencies do the same?
Jason's user avatar
  • 1
1 vote
3 answers
4k views

Why will the water not overflow when ice melts?

This is an old question but still there's something I could not understand. Here it goes: A glass of water has an ice cube floating in it.The water level just touches the rim of the glass. will the ...
Kashi's user avatar
  • 85
16 votes
1 answer
6k views

Why do my "steel ice cubes" have water in them?

I recently bought steel ice cubes. A better name is probably "steel cubes with unidentified liquid" which I presume is water. When I opened the package I was quite surprised that they ...
ludz's user avatar
  • 963
0 votes
2 answers
169 views

Why is my watter bottle wet after the water inside it unfreezes?

I have a filled, warm, and dry (on the outside) water bottle that I put in the freezer. The next day I come and take the water bottle out of the freezer and towel dry the ice gathered around the ...
innating's user avatar
6 votes
1 answer
685 views

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
  • 3,365
2 votes
2 answers
612 views

Why do icebergs flip over?

Why do icebergs flip over? Are certain shapes of icebergs more "stable" than others, in that it's harder to flip them over? If so, why? For example, it somehow makes intuitive sense, that a ...
Maj Zobrani's user avatar
0 votes
1 answer
60 views

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 ...
Pycoder's user avatar
  • 11
0 votes
1 answer
94 views

Is supercooling water reversible?

Water can exist in a supercooled state. Even at $-48,3$ degrees Celsius it can be liquid. Below that temperature, the water will freeze. If I cool the ice to, say, $-60$ degrees and heat it slowly ...
Deschele Schilder's user avatar
-2 votes
1 answer
160 views

Can ice patterns form on the top of deep water?

Here is a picture of a pattern in ice: There are feathers, or flowers to be seen. The ice has grown on a solid underground. Water condenses on the solid underground and freezes. I have never seen ...
Deschele Schilder's user avatar
1 vote
2 answers
896 views

Time required for the formation of ice of some thickness in a lake

The air above a large lake is at –2°C, while the water of the lake is at 0°C. Assuming that only thermal conduction is important and using relevant data selected from the given below find how many ...
sameed hussain's user avatar
0 votes
3 answers
20k views

Is ice always at 0 degrees Celsius? Does the temperature of ice get below that? [closed]

A rather simple analogy/explanation would be appreciated.
Shahzad Rahim's user avatar
68 votes
2 answers
12k views

Why was water freezing almost instantaneously when shaking a bottle that spent the night outside during a frosty night?

Due to the forecasted frost last night, I placed yesterday evening, some 1.5l standard PET bottles filled up to 90% with warm tap water(+60°C) close to some vegetables that I wanted to protect in my ...
s.k's user avatar
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