Questions tagged [ice]

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3answers
40 views

If liquid water is constrained in vessel then the temperature is dropped below freezing will ice form?

If liquid water is constrained in vessel then the temperature is dropped below freezing what pressure would be measured assuming the vessel is unbreakable? Or put another way, will ice form if the ...
35
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2answers
5k views

Why does ice make such peculiar sounds? [duplicate]

I've come across a couple of videos where some interesting sounds are produced using ice. (Click on the images to see the video.) Here, they drop a block of ice into a deep crevice and as the block ...
0
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1answer
24 views

How to avoid confusion of when to use and not to use the heat of fusion and condensation to get the amount of water in temperature equilibrium?

I'm not very sure of when should be used the heat of fusion and the heat of condensation for water. This happened when I attempted to solve a problem of this matter. The problem is as follows: A ...
1
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0answers
24 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', ...
3
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2answers
41 views

Does salt water melt faster or slower than pure water?

I am trying to conduct an experiment on the melt time time of two ice cubes with a different salt concentration, one with none and one with a lot. Does salt water melt faster than pure tap water? (...
2
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1answer
105 views

Salt water and ice, vs. plain water and ice

A famous puzzle is whether an ice cube melts to nothing more quickly in salt water or fresh water. The answer is fresh water, because the water melting off the ice cube sinks in the plain water and ...
0
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3answers
53 views

Why does reducing the contact area increase traction on ice instead of causing slippage?

I mean treads on tires, studs and snow chains. To begin with, I would think that reducing the area will increase the pressure causing the ice to melt and make it slippery as is the case with ice ...
0
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0answers
9 views

What is relation between Absolute humidity and frost formation?

We see frost formation on our car glass when ambient temperature is really low. I believe this frost formation comes from water vapour from the air. So should there be more frost formation with ...
2
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2answers
65 views

What will be the effect on the water level? [duplicate]

I came upon this question recently while studying about buoyancy. It goes like this: If an iron block is covered with ice and floats in a tub of water, what will be the change to the water level ...
-1
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3answers
108 views

Ice Melting Faster in Running Water?

Is it me or have anybody else noticed that ice melts way faster in running water than if you keep it in water or just keep it on any rigid surface.The difference is enormous .Why is it so?
0
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2answers
40 views

How to calculate energy released by formation of frost on window during winter?

When the T ambient is low, we can see frost formation when the surface of window or surface is less than 0 degree C. But how to calculate the energy released during that frost formation at the window ...
0
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1answer
65 views

How deep must Earth's ocean be to form Ice VII on bottom?

Is there way to tell how deep must Earth's ocean be to form Ice VII on bottom? Or is it impossible because of our planet is too small? As I know, in 11.5km Mariana Trench there is 108 MPa and to form ...
1
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0answers
77 views

Pauling's derivation of the residual entropy of ice

I am trying to understand Pauling's derivation of the residual entropy of ice (link). First let me paraphrase Pauling's argument. He supposes that every oxygen atom (let's call one of them $A$) is "...
1
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1answer
26 views

Why does water freeze radial around an object?

I noticed an interesting fact today while having a popsicle during my lunch break. When I bit the top of, I could see that in the freezer the ice had frozen radial around the stick. Could anybody ...
2
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2answers
106 views

Why is it better to let your wheels roll in ice?

I've recently read that if you're driving in icy conditions and begin to slip, it's better to not tap on the breaks, and instead, allow the vehicle's wheels to continue rolling. Why is this the case? ...
2
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2answers
851 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 ...
1
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2answers
75 views

Minimal work required to produce ice at room temperature

I'm wondering about the most efficient way of producing ice from water at room temperature. First of all: why, in principle, do we need to put in work to do so, if water gives off energy while ...
0
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0answers
59 views

Sensitivity of latent heat of fusion of ice on temperature and pressure

The enthalpy of fusion is the heat necessary to convert 1 kg of ice to liquid water. According to Wikipedia, this heat equals 333,55 kJ/kg. Does this heat change with the temperature or pressure and ...
0
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2answers
102 views

Density of ice < water?

In the situation of an ice cube placed in water and eventually melting, it is supposed that natural convection is the process in which heat transfer from water to ice occurs. However, natural ...
7
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4answers
2k views

How does ice melt when immersed in water?

When an ice cube is immersed in water at a room temperature, how is the thermal energy from the water transferred to the ice cube? Currently I have two answers: Infrared radiation from the water ...
0
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0answers
32 views

How can I get the height that sits above the waterline of a partly-submerged object?

If I know the density of water (say 1024 kg/m^3) and the density of ice (say 900 kg/m^3), and the volume of an object (say 8 x 10^9 m^3), how can I figure out how much of it is sitting above or below ...
-1
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2answers
161 views

Can we use the power of ice to float to make free electricity?

ice and water have a volume to weight ratio of 12/11 so 11 tons of ice will support 1 ton of weight 1 ton of ice takes 1000 watts or 12000 b.t.u. of energy to be produced question is, at what depth ...
1
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1answer
246 views

Equilibrium between Steam and Ice

Problem Statement: $15 \ g$ of steam at $373 \ K$ ($100^{\circ} \ C$) is mixed with $25 \ g$ of ice at $273 \ K$ ($0^{\circ} \ C$). What is the final temperature of the mixture. My Question: The ...
2
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3answers
63 views

water pipes break when temperature goes down, how to estimate the energy involved?

Normally low temperature is associated with lower energy state and high temperature with higher energy state. There is an apparent paradox when a water pipe breaks due to low temperature: when ...
11
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2answers
470 views

Why does an ice-cube turn faster and faster while melting in water?

Whenever I put an ice-cube into a glass of hot water, so that it melts quickly, and it is initially rotating slowly, I noticed that its rotational speed increases as it melts and 'shrinks'. Why? I ...
2
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1answer
20 views

Can dry fur (or any natural fibre substance) stick to a surface ice?

With the lack of moisture, that would come from the skin, could a natural fibre substance (e.g. polar bear fur) possibly stick to a surface of ice?
2
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3answers
116 views

Could a microwave oven be tuned to defrost well? [closed]

Typical microwave ovens do a lousy job of defrosting because liquid water absorbs their radiation far better than ice. So once a spot melts, it will quickly rise to cooking temperature while the rest ...
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2answers
132 views

Can shining a laser pointer on an Ice Cube melt it?

I heard in videos that if you use a laser pointer (Green if I recall) and point it on a ice cube, that it would cause it to start melting, is that true? I know that light carries energy and momentum, ...
2
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0answers
43 views

Ice formation in a cavity that was sealed at ambient condition and taken to space

I have a hardware with a cavity that was closed (welded) at ambient conditions (298K, 1 bar Pressure and 50% RH). The hardware was taken to space where the temperature can go down to near zero Kelvin. ...
2
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0answers
53 views

Ice blocks melting outdoors [closed]

I have a question, that is not related to anything academic. We are planing a festival in winter, that will have some stage set up of ice blocks. There will be several big rectangular prisims of ice, ...
0
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3answers
663 views

If the thermal expansion coefficient of water was always positive, would ice sink?

I understand that having a negative thermal expansion coefficient means that instead of the material expanding as it heats up it contracts, which is what happens to water, and I know that the ...
0
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1answer
886 views

Turning water to ice in vacuum

My 9yr old is inspired to try to make ice with a vacuum after seeing an exhibit do just that at room temperature at the Exploratorium in San Francisco. He's using a motorcycle vacuum brake bleed pump ...
1
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1answer
76 views

What wavelength of light has the greatest rate of reflection off of ice?

We are using a camera that is nearly flush against frosted ice (not perfectly clear, but pretty close). We are currently using white LED's, but very little of the light gets reflected back into the ...
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0answers
326 views

Can steam freeze via adiabatic expansion?

Context: At the end of animation movie Steamboy, a huge steam engine's pressure vessel breaks, which results in the escaped steam freezing to ice. I've been thinking about this -- is it really ...
9
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3answers
2k views

Does the shape of ice affect the amount of heat required to melt it

Is the amount of heat required to melt a $0^\circ C$ 10cm x 10cm x 10cm cubic ice equal to the amount of heat required to melt $10^{15}$ piece $0^\circ C$ 1$\mu$m x 1$\mu$m x 1$\mu$m cubic ice ? I ...
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3answers
1k 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 ...
2
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2answers
71 views

What is the enviroment in which water will come out of an ice fishing hole?

I have watched some videos on YouTube of people cutting holes in ice and water not just finding equilibrium in the hole, but water actually coming out of the hole along with many fish. There has to be ...
-1
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1answer
1k views

Final temperature of ice and water [closed]

My answer doesn't seem likely but I can't see where I've gone wrong: Q: Ice of mass 0.125kg at -5 degrees is added to water of mass 0.25kg at 8 degrees. Calculate the final temperature of the water ...
3
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1answer
727 views

Melting of ice on applying pressure

Can someone explain why ice melts on increasing pressure based on Le Chatelier's principle? By the principle, ice will try to oppose increase in pressure. It can do so by increasing volume right? But ...
2
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2answers
92 views

Icy roads while the temperature is above 0 Celsius?

The temperature last night in my suburb and in Montreal was 4 Celsius at 9 P.M. . The snow and rain of the day had melted and the roads were damp but not icy. This morning at 5 A.M, the temperature ...
202
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1answer
17k views

Strange ice found in my garden

This morning I found a really strange ice formation in my garden. I can't figure out how it appeared, because there was nothing above. The night was particularly cold (Belgium). To give an idea, it ...
0
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2answers
61 views

Why was there frost on the inside of my windshield? [duplicate]

I usually start my car remotely and let it warm up before I leave for work. This morning I forgot to start my car beforehand, so I had to scrape the ice off the windows. I was surprised to find frost ...
-1
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1answer
157 views

What was the rainbow like object I saw in ice crystals this morning?

This morning, while driving to work, I saw a rainbow-colored pillar formed by ice crystals frozen out of furnace exhaust from chimneys. It was very broad - a bit wider than my (large) hand at arms ...
0
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1answer
675 views

Fastest way to melt ice cubes in glass of water

I'm in a restaurant and order a glass of water. What I get is about 50% water 50% ice cubes. So, after finishing my water, I'm left with half a glass of ice cubes. I'm in a hurry, so need to leave as ...
0
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1answer
60 views

Tongue and frozen metal [duplicate]

I understand that when you put your tongue on frozen metal, your tongue sticks to the metal but how does having a layer of ice covering the metal prevent your tongue from sticking?
0
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2answers
144 views

Will a vinegar and water mixture prevent ice from forming?

A trivia game I was playing made the claim that a vinegar and water mixture can be used to melt ice. Google lead me to Snopes.com, which claims that the mixture will prevent ice from forming instead ...
116
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2answers
11k views

Why does ice cream get harder when colder?

What would seem to be a silly question actually does have some depth to it. I was trying to scoop out some of my favorite soft name-brand ice cream when I noticed it was frozen solid, rather than its ...
1
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2answers
247 views

Running vs. walking in slippery condition

We are experiencing warmer weather than normal, which is causing the snow to melt and re-freeze daily. This has led to very slippery conditions. A few years ago, I was running in similar conditions, ...
0
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1answer
59 views

Can ice burn you from it being hot (not a frost bite sort of burn)?

The phase diagram of water implies that at a high enough pressure (100 kbar) that very hot 300°C ice can exist. Researching about ice burning someone just nets results on frost bite (which is ...
28
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2answers
3k views

Why are some parts of this ice block cloudy and other parts clear?

I had a sprain in my leg a few days back. The doctor recommended dipping my foot alternately in ice-cold and hot water to aid blood circulation. It is here that I discovered something interesting. ...