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0
votes
1answer
55 views

Phase change in oceans

When ice cube melts in water the level of water doesn't change but when glaciers melts in oceans sea water level increases why?
2
votes
1answer
110 views

Boiling water in metal pot

This is something I've observed when boiling water for tea. I place the water in a metal pot and bring it almost to a boil. The water level is at about the middle of the height of the pot. When the ...
0
votes
0answers
24 views

Why does ice form when you break the seal on a very cold bottle of water? [duplicate]

I put a sealed bottle of commercially available drinking water in a freezer and let it get really cold, but not frozen solid. The water is not carbonated. Then I remove the bottle and place it in a ...
0
votes
3answers
170 views

What goes on inside a kettle if you can't get to it after the whistling begins? [closed]

Let's say you can't get to the kettle for a few minutes after the kettle starts to whistle. Presumably the temperature of the water inside the kettle is still rising, past boiling point If there wasn'...
4
votes
1answer
88 views

How can frozen clothes dry overnight?

I put some wet Polyester clothes outside for the night (the clothes were washed by hand with pretty cold water -maybe around 4°C- and wringed by hand so there was still water dropping of them when I ...
195
votes
1answer
16k 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 ...
5
votes
2answers
147 views

How realistic is it to dry clothes in freezing weather?

There are stories about clothes freezing and drying in cold weather. The typical reason given for that is that the water is undergoing sublimation (ice -> vapor). The phase diagram for water is In ...
14
votes
2answers
466 views

Boiling point of barbecue sauce

Yes, I am serious. I thought it was interesting that I was reducing some fluid the other day, and I put in my alerting thermometer to warn me of a rising temperature which I expected as the water ...
80
votes
6answers
20k views

Why does water stop boiling immediately after turning off the heat?

When I am heating water on a gas stove, it begins to boil after some time and bubbles of air can be seen escaping out. However, as soon as I increase the amount of heat in the stove, the rate of ...
0
votes
2answers
347 views

Why does molten sand cool to form glass and not return to it's original yellow form?

I came across this website on the internet: http://www.explainthatstuff.com/glass.html. In this website, it is said that When molten sand cools, it doesn't turn back into the gritty yellow stuff ...
0
votes
2answers
116 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
votes
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 ...
22
votes
6answers
12k views

Does providing more heat to a pan of boiling water actually make it hotter?

Sometimes my wife has a pan of water 'boiling furiously'. Is the extra heat (wasted in my opinion) actually making any difference, apart from reducing the amount of water in the pan - which could be ...
-1
votes
1answer
158 views

Will all water evaporate before oils and fats start to evaporate?

Water starts evaporating at 100c and oils and fats have a smoking point (equivalent form of evaporation) which is a lot higher and will vary depending on the purity of the oil and fat. If you are ...
3
votes
2answers
91 views

What causes steam to 'appear' when saucepan is removed from the heat?

So I've noticed this many times over the years, and in my head come to different conclusions as to what is happening, and then it struck me that I could ask here and maybe finally be sure. When ...
5
votes
2answers
8k views

Why do ice cubes shrink in the freezer?

OK before you all yell "EVAPORATION", I know that's the boilerplate answer, but why and how. Back in high school we were taught water, and most other elements and compounds, have three states, solid, ...
5
votes
0answers
31 views

Why does foam build up when boiling food with the lid closed? [duplicate]

There's a related question on Seasoned Advice. When you boil some food like pasta or legumes without the lid, there's almost no foam, but when you put it on, the foam quickly builds up and runs over ...
5
votes
4answers
4k views

Temperature of steam rising off boiling water

When boiling water on a stove, will the temperature of the steam vary significantly with the temperature of the burner? Person A's argument: So, once individual water molecules reach 100C/212F, they ...
0
votes
2answers
483 views

Why is there vapour when I take a hot shower?

When we take a hot shower it is pretty common to see a white vapour around the bathroom. But the water I am using is below 100º C. I know the boiling point of the water can be lower than this with a ...
2
votes
2answers
431 views

Frozen lake ice formation

Yesterday I went walking on the Lagorai mountain, in northern Italy. Passing near the Lake Erdemolo, I noticed a small part of frozen water from the lake, separated from the rest (the lake was not ...
4
votes
3answers
3k views

Why is boiling not just a surface phenomenon?

The boiling point of a liquid is defined as The temperature at which the vapor pressure of the liquid is equal to the external atmospheric pressure. That being the case, why, in a pot of boiling ...
5
votes
4answers
773 views

Why does a cloud form around ice cream?

Everyone have probably seen the phenomenon as one opens a cold ice cream from its pack, a white cloud begins to flow around the ice cream surface, and it constantly spreads out until the ice cream ...
11
votes
1answer
2k views

Why does hitting a cold bag of water freeze?

About 24 hours ago, I bought a box of 30 pieces water ice. I put them in the freezing compartment and when I came from work I was expecting a nice chilling ice. But when I opened the freezer, I saw ...
3
votes
1answer
308 views

How can we describe or model the spread of ice during the freezing of the surface of a still lake?

Premise: I live in a place where it is unquestionably wintertime in every aspect of the phrase. I was driving down the street and I drove by a lake. There was a recent and sudden temperature drop (...
53
votes
3answers
25k views

Why is boiling water loud, then quiet? [duplicate]

Water in my electric kettle makes the most noise sixty to ninety seconds before the water comes to a full boil. I have been fooled many times by the noisy kettle, only to discover that the water was ...
2
votes
1answer
236 views

Why are bubbles formed in the empty space of soda when turned upside down?

I know this may actually be a chemistry question, but I don't know where else to ask. When I have a soda plastic bottle, I turn it upside down so the soda fills the empty space, and bubbles start ...
7
votes
2answers
16k views

Why did my liquid soda freeze once I pulled it out of the fridge?

Can someone explain in both layman's terms and also technically why when I pulled my glass filled with liquid soda from the freezer, the liquid soda quickly froze? Doesn't this violate the 2nd law of ...
30
votes
3answers
16k views

Why is there more steam after a pot of water *stops* boiling?

I have a pot of vigorously boiling water on a gas stove. There's some steam, but not alot. When I turn off the gas, the boiling immediately subsides, and a huge waft of steam comes out. This is ...