Water Boiling in a Vacuum Chamber

[jeancolmor]

it's the imperfection in the glass that break the bond faster imagine nano cavity

[DaffyDaffyDaffy33322]

I wanted to see boiling water in a vacuum, not a vacuum making water boil

[ThorIsHereGames]

He's probably using tap water or otherwise "impure" water which would raise the boiling point. 102 seems reasonable. We weren't there for the part where he taught that, I'm sure he's not misleading children.

[soopercalorie]

What do you think's gonna happen?

"It's gonna explode" <---- LOL answer xD

[1moeser]

you can do that with water at room temp

[Knoughts]

ONE HUNDRED AND TWO THOUSAND

[TheOverkill102]

the boiling point is 99.97 Celsius (for extremely pure water) not 102(what are you teaching the kids lol)

Quote: "For purists, the normal boiling point of water is 99.97 degrees Celsius at a pressure of 1 atm (i.e., 101.325 kPa). Until 1982 this was also the standard boiling point of water, but the IUPAC now recommends a standard pressure of 1 bar (100 kPa). At this slightly reduced pressure, the standard boiling point of water is 99.61 degrees Celsius"

[tonkapoplol]

how much does cost

[littledaddy456]

I wonder what would happen if you put a baby in one of those...

[beautymerits]

THIS is WHY u don't cook RAMEN in a vacumme cooker.. INSTEAD you cook it in...???? pres...cooka??? There you go.. you got it... yummy..

[10000Monkeys]

Where can I get a vacuum kit like that?

[feichen1997]

Did I hear ew?

[imachavel]

how do they suck the air out?

[spaceboyted123]

does the water evaporate at the same rate as it would under normal atmospheric pressure?

[danagol1985]

If a naked person was exposed to the vacuum of space, would they freeze due to the cold, or explode - due to the low pressure causing their blood to boil, and force itself out of the body?

My god, just imagine what would happen to the eyeballs, and ears...

[D34Df007]

@danagol1985 they say in the event of depressurization of a suit or compartment in space, you are supposed to fully exhale and hold your breath and close your eyes as tight as you can. can only live like that for 30 seconds though. kinda reminds me of the whole "hide under your desk in the event of an atomic bomb" thing.

[auran5]

So...if you weren't wearing a suit in space, would your blood boil too?

[caneofsomaria]

With low enoguh pressure, the water BOILS and COOLS. If you put room temperature water into a REALLY high pressure vessel (theoretically), would it FREEZE and HEAT UP ?

[serpretet]

@caneofsomaria water is one of the few substances that expands as it solidifies, very few substances do this. Because of this, increasing pressure will actually never cause liquid water to solidifiy, quite the opposite, if you have ice that's just at the border of freezing, increasing pressure will actually melt it. Go to google and search for water phase diagram. It's a fairly simple diagram that shows pressure vs temperature for water and the phase states it will exist in.

[caneofsomaria]

@serpretet

Thanks!!

Makes a lot of sense really!

[NukeBluff]

The more the pressure lowers the easiest the water atoms can seperate

[Posternal]

Its 100 degrees Celcius, not 102

[MrBoowashere]

@Posternal Maybe they live underground

[nothreat33]

@Posternal Technically, it depends on your altitude because the pressure is different. This is why there are different boiling temperatures on food's depending on your altitude.

[lothre]

If you seal the container and drop the pressure to boiling point, as the water becomes gas vapor does it cause to pressure inside the container to increase?

[c4science]

If you wipe the inside of the container with a tiny amount of detergent it won't fog up. Cool exp. thanks.

[sungmham]

this is making Oxygen from the jar

[favbookreview]

Okay, question, to the poster of the video, and anyone else who would know: How long can the boiling be sustained? Can the liquid boil indefinitely? Is there a breaking point?

[Mastertim2006]

why is there a plastic dinosaur right to it? Oo

[DeathBringer9000]

screw metric

[vmelkon]

mercury thermometer

[VeradoonKing]

cool. a vacuum's making the boiling point lower lol

[ZeLiquidator]

He says the water is hot... How can the water be hot if the termperature was at room temperate and after being in vacuum the temperature actually drops????

[Maxdwolf]

@ZeLiquidator It wasn't at room temperature. It was at 90 C, it was 60 C afterwards (off the top of my head I think that's about 130 F). But even if it were at room temperature to begin with it would still be cooler afterwards. The boiling expels the hotter molecules and causes what remains to be cooler.

[101317857]

the water molecules are jumping out of the water...making the boiling effect

[rickvanman]

This exact same thing just happened to me when I vacuum-sealed a mason jar full of hot tomato chutney. It went on boiling for about 20 minutes.

Thanks for the explanation :o)

[gnark1ll1us]

This is why I cant get a decent cup of tea at my girlfriends house : D

Boiling point of water is about 97 degrees up the mountain she lives on, and man can you tell the difference.

If I was to live up there I would have to make some sort of pressure bell just for my morning cuppa : D

[ItsRyanStudios]

what pressure does the bell jar have to be at for the water to boil?

thanks

[gnark1ll1us]

@ItsRyanStudios Around 20 milibars I believe is the vapour point of water

[EcoDimension]

@ItsRyanStudios it largely depends on the temperature of the water. the lower it is the lower the pressure needed. if you want the specs just google it.

[trader0108]

Please tell me where to buy a water distiller that uses a vacuum pump that uses much less energy power than the energy used by the regular boiling of water for the distillation of water. My regular Waterwise water distiller costs about 40 cents a gallon for distilled water , and I use more than 500 gallons a year ( $ 200/year + ). Where may I buy a vacuum pump that would be acceptable for drinking the water from the water vapor that passes thru it ( that is water not mixed with oil or metal ) ?

[neverfearchrisishere]

@trader0108 You won't be able to find a domestic water distiller for drinking water which makes use of reduced pressure to reduce the boiling temperature of the water.

The reason for this is that although you could distill water this way (and remove impurities like, say, salt) it would not sterillize the water

- many water borne bacteria can travel short distances in water vapour

- it is the heat of your water distiller which kills off all these nasty bugs and makes the water safe.

[slyman928]

@neverfearchrisishere Maybe he's trying to remove fluoride which i think this would work for and if he needs to remove things like bacteria he could boil it conventionally.

[neverfearchrisishere]

@slyman928 True, but your unlikely to find such a device for non-commercial use - since someone would sooner or later install the wrong one and poison their family.

[lilsorms202]

Ah so that's why water boils at a lower temperature at very high elevations, lower air pressure. Very cool.

[terrryg]

He should have showed his students after the water was finished boiling it would have started to freeze. The word cold means absence of heat the reason why outer space (away from a star) is automatically cold not automatically hot. The reason why the water boils is the same reason why your food heats up in the microwave the molecules are moving really fast causing friction causing heat. Once the molecules stop moving that water would've froze.

[pdblouin33]

@terrryg That's not it at all. Boiling means too much energy to be in liquid form, You have it in reverse - too much heat causes water to boil. Water boiling does not cause excess heat in the form of moving molecules. And how are the molecules supposed to "stop moving" - i.e. absolute zero - after they've boiled...that's ridiculous.

[EcoDimension]

wait a second..... the water is suppose to be cooler after the boiling! not warmer!

[pdblouin33]

@EcoDimension What do you base this on? Boiling is just a change of state (liquid to gas) and it takes energy that is extra - i.e. a boiling pot of water only boils when it has already taken in enough energy as heat and can only change state, but this does not diminish the energy of the boiling water - if it did, the water would stop boiling. Only added energy makes water boil or in this case, reduced pressure so the water already had enough energy to boil.

[EcoDimension]

@pdblouin33 alrighty professor smarty pants. the water loses its energy thru boiling at low pressure. once you bring it back to atmospheric pressure the water might get cold enough to freeze up. PS: watch some of the other videos and they'll demonstrate how or perhaps get a proper education.

[pdblouin33]

@EcoDimension How in the world does hot water lose all of its energy just because it turned to gas? It doesn't. Back to atmospheric pressure, all it will do is condense. It may have lost some energy, but it will not freeze.

[EcoDimension]

@pdblouin33 the water doesnt need to be hot or 100 degrees centigrade to boil. it is pressure dependent and its the water in the breaker that gets cooled and not the vapor. i dont wanna give you free lessons here. if you wanna know more. go ask your science teacher. =D

[EcoDimension]

@pdblouin33 go stick your head in a hole right now.

[gnark1ll1us]

@EcoDimension He just doesnt understand : D

Its funny that he thinks he does though. 

[EcoDimension]

@gnark1ll1us sadly people like him/her breeds well. theres gonna be more of em in the future.

[857frank]

Water molecules have some energy of motion but not enough to escape because the weight of air above is stopping it. You can either reduce the weight or increase the energy by heating it or both. Here, the reduced weight of air means it has enough energy at room temperature to escape (boil).

[biodojo]

The water decreases in temperature because the molecules with a higher kinetic energy become vapor and so the remaining liquid water is cooler. You can actually get the water to freeze this way. That is how they make freeze-dried/powdered coffee.

[800newdollar]

I've wanted to see what an animal or a living creature place in a vacuum would look like, I am sure they have done this but cannot find a video. Anybody know where one is?

[fuunguus]

I hope I never fall off a shuttle craft without a suit, that must be a horrible death thinking about the boiling and all!

[mikeJ334]

If you "fell of a shuttle" without a suit you would die from asphyxiation, not from boiling. Nothing would boil except for the liquid directly exposed to the vacuum. Horrible non the less.

[ThaedDavid]

Probably a stupid question, but seeing as most of our power stations use steam to drive turbines, wouldn't boiling the water in a vacuum be more efficient than using coal or nuclear?

[fuunguus]

Well, in all actuality, they run on over pressure. The energy loss would be bigger if a vacuum pump was used. You could as well just use a motor to drive the turbine, which also would be stupid. The power stations are meant to extract the energy within coal and such, you can't extract more energy from a vacuum pump than the energy it uses, that would break the laws of the universe.

[AgentKB24]

You don't really extract useful energy from coal/uranium. You use the HEAT energy you get from them to BOIL WATER/TURN IT INTO STEAM. This steam is then used to turn turbines that produce USEFUL ENERGY. Know what you're talking about before you speak, big boy.

[fuunguus]

Heat is kinetic energy. The energy is released when bonds between the atoms break. Because of the law of energy, and that it takes energy to create these bonds, the energy it took is released when they break. The energy is then used to heat up water and all that yes. But I don't see anything wrong in saying that we extract the energy within coal and oil, in a sense that's what we are doing. Simply by lighting them on fire, but still.

[fuunguus]

@ZeLiquidator

You probably figured it out your self, but no, there is no point in doing that. The only idea of a perpetual motion device I have ever seen that I don't see any reasons for wont work is this one: watch?v=vhOSjJW58G8

All mechanical devices are easily explained, but this is something else...

[neverfearchrisishere]

@fuunguus All mechanical devices are NOT easilly explained. With a solid understanding of physics and good engineering you can make some very counterintuitive things happen.

*Perpetual motion machines* don't really have perpetual motion - I can assure you absolutely of that, the laws of thermodynamics are inflexible in that regard - they are instead the physics and engineering equivalent of magic tricks - intended to decieve people in clever and hard to explain ways.

[fuunguus]

@neverfearchrisishere

The problem with mechanical devices is friction, that seems to be what always hinder perpetual motion. This device is non-mechanical, it uses gravity for it's perpetual motion. The thing is that the higher this device is the more energy it will generate, but the energy consumption will stay the same. It can be made incredible high and generate a large amount of energy, it seems there are no limits other than how far gravity can reach, which is quite far...

[neverfearchrisishere]

@fuunguus ............. the problem isn't friction. Its the fundemental laws governing the behavior of energy.

e.g. an ocean of water at 2'C has lots of energy. Laws governing energy mean that you can't power your cargo ship with this energy since you can't extract it.

Laws of thermodynamics show your device(and all similar) to be mathematically impossible.

[fuunguus]

@neverfearchrisishere

What? The problem is friction! The laws written by scientists isn't the direct cause! Don't get me wrong, I am a firm believer of the laws of thermodynamics. That is why I must know why this device wont work, it is just mind boggling, it annoys me, cause I just cant see any reason why it fucking wont work!!! I am losing faith in these laws every time I think about that fucking device.

[TheGuyInUrCloset]

Where can you get a vacuum chamber? And how much do they cost? you can do sooo much with vacuum chambers. Liquid nitrogen too, but that is also faaaar more dangerous.

[ducttaperulestheworl]

should get ice to boil :P

[super6plx]

lol that won't work xD

[pspsean]

use a syringe, put your thumb over the tip and pull the plunger back (with some water in it)

[Darshenstein1]

would a vacuum chamber made with a refrigerant compressor be suitable to do this?

[metalANDskating]

oh chemestry ;)

[panictactics]

I think it was heated above 100.

[johnayerger13]

where can i get one of those???

[clnmyjts]

intresting I like that dooo more...do..more

[ghidfg]

wooooow

[lex91793]

Wow, that's cool.

[LookMaNoBrains]

good demonstration~ well done

[chrataxe]

The definition of boiling point for ANYTHING is when atmospheric pressure is EQUAL to vapor pressure. All liquids have a pressure coming off of them, called vapor pressure. When the atmospheric pressure is weaker, all gas disolved in the liquid is let out because there is no pressure keeping it in, this includes water vapor. "Boiling" is just bubbles formed by gases coming from below the surface of the liquid, escaping b/c it is less dense than the liquid and diffuses equally throught the glass.

[cypher1024]

Is that Jimmy Kimmel giving the demonstration?

[xismxist]

cool! but if it only takes vacuum to boil water... now "moon hoaxers" will have some more arguments under their wings :P

[avcomth]

OMG they're not even using matrics in their classes. Is this in a school?? Water boils at ZERO DEGREE CELSIUS.

[XUltimateOwnerX]

Water FREEZES at 0 degrees celcius, it boils at 100 degrees celcius...

[wmoore998]

Only at sea level.

[MockStoneLLC]

uhm, how did you even think that up, usually boiling is hot and big numbers mean hot...

[wmoore998]

In a near prefect vacuum ice when it melts it will sublime. It will skip the liquid stage. The Apollo astronauts used water as a refrigerant by exposing the water to space. On top of Mount Everest the boiling point of water is 69 °C.

[Dnmonkeyman]

Water doesn't boil in a vacuum; it just appears to be because the vacuum removes the bubbles of air from the water. There isn't any rise in temperature because the water is not boiling.

[alwinovich]

no. it is actually boiling, the hot molecules are sucked out of the liquid

the temprature actually drops

[dawidgarus]

@alwinovich: well... did you ever thought that's the definition of boiling?

[alwinovich]

and btw why is there a liquid condensing on the side of the bell jar if it isen't boiling?

[Viperjunkie]

it is boiling. When you remove the air you remove the pressure, thus lowering the boiling point.

[DarkLightA42]

He was attempting to prove someone wrong...