# Questions tagged [ice]

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

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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 ...
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### 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 ...
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### 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 ...
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### 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 ...
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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 ...
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### 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 ...
1 vote
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### 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 ...
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### 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 ...
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### 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 ...
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### 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°...
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### 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 ...
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### 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 ...
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1 vote
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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 ...
1 vote
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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 ...
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### 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?
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### 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?
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### 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 ...
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1 vote
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### 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 ...
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### 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 ...
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### 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 ...
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1 vote
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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 ...
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### 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)?...
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### 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 ...
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### Why does snow disappear without melting?

During very cold weather, snow often gradually disappear without melting.
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### 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 ...
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### 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?
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### 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 $\lambda$,...
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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 ...
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### 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 ?
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### 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?
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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 ...
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### 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 ...
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### 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 ...
1 vote
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### 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 ...