I thought you could touch for like 2-3 seconds due to liedenfrost effect. The heat of you hand causes a gas to form "levitating" the drops of liquid nitrogen.
@DomR1997 See my comments below about the Leidenfrost effect. Also, see my video response to this video which demonstrates it for water on a hot-plate and for liquid nitrogen.
@yippy010 leidenfrost effect is what happens when you drop water onto a screaming hot stove and it moves around theres a layer of steam protecting the water from boiling instantly
So in the movie Terminator 2 when the bad guy at the end freezes on the spilled liquid nitrogen and his legs and arms starr breaking, can that happen in real life???
@adidastwist69 Not really. Frozen flesh of a person (which Terminator 2 was not) is mostly frozen water. It would be about as fragile as a big block of ice. The flower breaks easily because it is thin.
@runerman17 Exactly right. I even have another video about exactly that phenomenon of the fog created in the air from water vapor by the cold evaporated nitrogen gas.
@pjwho "What I said is a bit misleading. The way liquid nitrogen is made is by compressing air (which heats it up) and then allowing it to quickly decompress. Some of the air escapes, taking heat with it. The cycle is repeated until it is cold enough to liquefy. Then by fractional distillation oxygen and argon can be separated. When I said 'reduce the pressure' this is what I was referring to. Of course you would also have to compress it but the hard part is getting it cold enough."
One thing i don't understand is why the liquid nitrogen should actually cause the candle to go out. While it is true that nitrogen has no oxygen, it is still cold. the air still has oxygen, so some oxygen should liquify and fall on the candle. Since liquid oxygen is a good oxidizing agent, the candle should keep burning. I hope u can understand what i mean.
@jhunkubabu The liquid nitrogen may collect some liquefied oxygen but I suspect the amount would be very small. When I put out the candle I am pouring cold gas that has evaporated from the surface of the liquid nitrogen. The liquid nitrogen really is 100% nitrogen. This gas will be (probably) at least 99% nitrogen because it will have completely displaced any regular air. I seem to recall reading somewhere that flames require more than 18 or 19% oxygen.
@jhunkubabu Whereas there will be a little bit of oxygen, the amount of nitrogen is far more abundant, to the point where the flame simply doesn't have enough oxygen to continue burning.
Additionally, the extremely low temperature of the nitrogen saps the heat from the flame, meaning it couldn't burn even with the oxygen.
@TheAdmiralPancake That was stunningly unkind of you. Were you born knowing everything? Patience is required when teaching students and showing them something completely outside of their experience. I hope you are kinder in person than you are in semi-anonymous postings on YouTube.
I'm sorry if my comment sounded rude. A stupid question isn't a question that is stupid. It's more like a joke question. The question "Can I have half?" would be a perfect example. It's not a serious question about the class. It's either unrelated to the class or is a joke.
That's the meaning I was going by. By that definition, your class did ask stupid questions. I didn't mean to call your class stupid, just say that some comments were total non-sequiters.
With the ledeinfrost effect you can put your hand in liquid nitrogen with no harm to you there is a gas barrier around your skin and as long as you do not sustain contact with the nitrogen you will be fine
If you where to put a human hand in it, would it turn black or would it freeze and give the same effect as the rubber ball ? As in, it would break if you hit it.
@TheRaevin As I understand it, no. Animal tissue of any kind is not susceptible to shattering upon being frozen solid. Try to shatter a frozen steak from the freezer and you'll see what I mean. The reason the rubber ball can be shattered is that is a single substance that has a glass transition temperature above the boiling point of liquid nitrogen. That means that when dunked for long enough in LN2 it becomes rigid and fragile.
@Nuan3677 No. Boiling liquids do not necessarily need to be 'hot'. The floor in this case is hot, in a relative sense, compared to the temperature of the liquid nitrogen. In an absolute sense, the floor is not hot. At least, it's not hot in a way that you or I would normally define it. After having the liquid nitrogen on it, the floor gets colder.
@lvll138inrs Probably not. But be aware that if you don't already have some experience with it and know how to handle it safely you could be vulnerable to some terrifying consequences. Stored incorrectly liquid nitrogen can cause intense explosions, for example. You know how ads always have a disclaimer at the bottom when the person on screen is doing something incredibly dangerous? "Do not attempt."
@aaronakeller Can you buy this online? I really wanted to do a experiment with this but at my own home if its up to 50 or 60 dollors for maybe a gallon that'll be fine.
@mrhilov8 I have never tried to buy it myself. I have only ever used liquid nitrogen for demonstrations that I obtained through a university or college lab which normally stocks it.
@EpicTrollThatTrolls The liquid nitrogen I used in this video was supplied by the generous folks in the lab at Bowdoin College in Brunswick, ME. They had it delivered to them by a local gas supply company that also supplies 'refrigerated liquids' (as they are often called). Liquid nitrogen is made by liquefying air and boiling off the oxygen and other components in the atmosphere. To turn a gas into a liquid it must be cooled (a lot). To do this the processor usually allows it to expand rapidly.
i have a question if you were to take something like a orange or apple and put it in liquid nitrogen for long periods of time would it have the same effect as a freeze drier and remove all the moisture from a object such as a apple, or orange
@23cecropia I've never tried it but here's what I think. It would just cause the water in the fruit to freeze solid. Cell membranes would break but probably not enough that much of the moisture inside would escape. So, I don't think you could freeze-dry by simply storing something in liquid nitrogen.
Freezing with liquid nitrogen is only a partial step in freeze drying. What you say is true, but what you do after is lowering pressure and increasing heat just enough for the water in the object to sublimate. Once you do that, the object has been freeze dried.
@formula90II Ahh. OK, if you decrease pressure and continuously evacuate the moisture as it sublimes, then yes, that would be freeze drying. I thought you meant to just dunk it in the liquid nitrogen. Which wouldn't work.
No, Liquid Nitrogen will not give you frost bite 'instantly'. You can pour it on your hand even dip your hand in it, for a short amount of time of course.
@DrewManDrew1992 about four months ago I commented: @WoRtH1milli You are correct, brief contact will not cause instant damage. I believe I posted a comment on the video about this... Is it not showing up on the screen at the appropriate time?
@aaronakeller no its coming up at the right time just some people want to criticize your video before they take a chance to look at the comment popping up in your video saying to go to the video response and stuff like that i love this video, a few days ago my chemistry teacher did a similar demo.
@punchingpower Liquid nitrogen is stored in two types of containers. One is a large, pressurized gas bottle designed to handle and deliver gases in liquid form. These are vented to prevent explosions. The Dewar flask is a very well insulated thermos bottle. Liquid N2 stored in such a flask eventually evaporates away. I wouldn't leave it in your car since N2 displaces oxygen and you could make the air inside unbreathable. Whatever you don't use will evaporate so use it all up if you can!
@SailorSaturn69 No, nitrogen does not burn in air. Air is (as I say in the video) nearly 80% nitrogen so we should be glad it doesn't. There is an interesting reaction between magnesium metal and nitrogen that is something like burning but it requires a much higher temperature than you'd ever see in a candle flame.
@alitareqali I think Theodore Gray has a picture of a sculpture made of mercury frozen with liquid nitrogen on his site: theodoregray . com / PeriodicTable (on the page about mercury). I'm pretty sure the stuff just freezes solid and looks like any other metal.
@JohnEdroid I am the teacher in the video. Click on my name and you'll see mostly videos of me doing chemistry demonstrations. (I think you might have mixed up who wrote each comment: my comments begin with @hitokiri657 because that's the person the reply is for).
damn where were you when i was growing up? my chemistry teacher sucked .she had no knowledge like this .well if i ever figure out time warp ill be at the front of the class ,keep up the good work
I'm not into chemistry but this was sure very interesting to watch the whole vid...wouldn't mind taking a few classes like these if a teacher was teaching just like were doing in this vid. :)
@hitokiri657 What I said is a bit misleading. The way liquid nitrogen is made is by compressing air (which heats it up) and then allowing it to quickly decompress. Some of the air escapes, taking heat with it. The cycle is repeated until it is cold enough to liquefy. Then by fractional distillation oxygen and argon can be separated. When I said 'reduce the pressure' this is what I was referring to. Of course you would also have to compress it but the hard part is getting it cold enough.
@aaronakeller Oh so you're the teacher. Well yeah very misleading, poor kid was gonna hit the craziest vacuum just to get his solid piece lol. Very nice demonstration, what university is it? My chemistry teacher didn't demonstrate jack, although I have a good grip of the behaviors of matter. Hope u upload some more. ; )
@aids696969 Nice of you to say so. I can't do fun stuff like this every day but I agree that it does help keep the students interested. And I like doing it.
I've got a question though. As the teacher says at the ending: ''nitrogen has no oxigen in it so it doesn't allow things to burn'' So... Can nitrogen basicly be used for putting out fires? Or is it basicly the same as a fire extinguisher?
@TheBeyondNormalGirl Nitrogen could in principle be used to put out fires. Nitrogen as a liquid would flow uncontrollably and as a gas would not stay on a fire but carbon dioxide exits the extinguisher as a solid, which stays where it is put. This is probably why carbon dioxide is common in fire extinguishers but nitrogen is not.
actually I have poured some liquid on my bare hands before in science class but we touched it for less than a second and none of had frostbite haha lol
"You can't touch it" is INCORRECT! You can pour liquid nitrogen over your open skin and nothing would happen. Damage is done when the liquid is stagnant, like if you were to cup it in your hand.
@dannycurtean I know that. See my annotation right in the video at 0:32. Also, see my other video by the title of The Leidenfrost Effect. It is posted as a response to this video.
You're a great teacher.
Anight7mareX 1 day ago
V/T=c iff pressure is constant.
miltos932 1 week ago
I love school. They say it's not a toy and then show you a bunch of fun stuff you can do with the thing that's dangerous.
superchee2e 1 week ago
lol, 'can i have half'?
morganfreemanismydad 1 week ago
I thought you could touch for like 2-3 seconds due to liedenfrost effect. The heat of you hand causes a gas to form "levitating" the drops of liquid nitrogen.
DomR1997 2 weeks ago
@DomR1997 See my comments below about the Leidenfrost effect. Also, see my video response to this video which demonstrates it for water on a hot-plate and for liquid nitrogen.
aaronakeller 2 weeks ago
This is WHITCH CRAFT
xundeadpkerx 2 weeks ago
Why have my chemistry lessons always been boring...
pipapoist 3 weeks ago
@adidastwist69 you can get frost bite from touching it and that usually results in the frost bitten part of your body falling off.
yippy010 3 weeks ago
@yippy010 Not necessarily. Scroll down through my comments and take a look at my Leidenfrost Effect video for further discussion.
aaronakeller 3 weeks ago
@yippy010 leidenfrost effect is what happens when you drop water onto a screaming hot stove and it moves around theres a layer of steam protecting the water from boiling instantly
protectoroffaith 3 weeks ago
So in the movie Terminator 2 when the bad guy at the end freezes on the spilled liquid nitrogen and his legs and arms starr breaking, can that happen in real life???
adidastwist69 1 month ago
@adidastwist69 Not really. Frozen flesh of a person (which Terminator 2 was not) is mostly frozen water. It would be about as fragile as a big block of ice. The flower breaks easily because it is thin.
aaronakeller 3 weeks ago
R.I.P Lilly flower :(
sharamandarata 1 month ago
Shouldn't the nitrogen be very cold when it gets on your skin after it boils back into a gas?
MrCnegcneg 1 month ago
You could use liquid nitrogen to huge forest fires? This would stop the fire immediately.
smukulu 1 month ago
I would def have enjoyed this class
CMDAO 1 month ago
Is the fog condensed water vapor?
runerman17 1 month ago
@runerman17 Exactly right. I even have another video about exactly that phenomenon of the fog created in the air from water vapor by the cold evaporated nitrogen gas.
aaronakeller 1 month ago
Now to make nitrogen ice, would it need to be at lets say -500 F?
TheNoisePolluter 2 months ago
i wish i had a teacher like him
WoundedSnake 2 months ago
3:35 "WHOAAA... Duuuuuude"
mystery1229 2 months ago
Good teacher!
bench227half 2 months ago
very impressive Mr. Keller
imonyourface36 2 months ago
@ 4:35 wouldn't it require an INCREASE in pressure to create solid nitrogen?
pjwho 2 months ago
@pjwho "What I said is a bit misleading. The way liquid nitrogen is made is by compressing air (which heats it up) and then allowing it to quickly decompress. Some of the air escapes, taking heat with it. The cycle is repeated until it is cold enough to liquefy. Then by fractional distillation oxygen and argon can be separated. When I said 'reduce the pressure' this is what I was referring to. Of course you would also have to compress it but the hard part is getting it cold enough."
aaronakeller 2 months ago
it wouldnt freeze ur hand instantly cuz of the leidenfrost effect right?
shield121 2 months ago
One thing i don't understand is why the liquid nitrogen should actually cause the candle to go out. While it is true that nitrogen has no oxygen, it is still cold. the air still has oxygen, so some oxygen should liquify and fall on the candle. Since liquid oxygen is a good oxidizing agent, the candle should keep burning. I hope u can understand what i mean.
jhunkubabu 2 months ago
@jhunkubabu The liquid nitrogen may collect some liquefied oxygen but I suspect the amount would be very small. When I put out the candle I am pouring cold gas that has evaporated from the surface of the liquid nitrogen. The liquid nitrogen really is 100% nitrogen. This gas will be (probably) at least 99% nitrogen because it will have completely displaced any regular air. I seem to recall reading somewhere that flames require more than 18 or 19% oxygen.
aaronakeller 2 months ago
@jhunkubabu Whereas there will be a little bit of oxygen, the amount of nitrogen is far more abundant, to the point where the flame simply doesn't have enough oxygen to continue burning.
Additionally, the extremely low temperature of the nitrogen saps the heat from the flame, meaning it couldn't burn even with the oxygen.
maxcaldicott 2 months ago
Great Presentation
JayZ04000718 3 months ago
i wish we could have any experiments at my school =/
Molten196 3 months ago
What a fantastic teacher.... He makes science fun:)
ALIENDNA14 3 months ago
I am studying A level biology and chemistry and found this very fast moving, fun, understandable and informative...thank you.
biologystudentni 3 months ago
This got a lot of views for a science demonstration, but make more! This really interested me!
ViperStingUK 4 months ago
Would the university in my area maybe give my some?
Sarov452 4 months ago
Haha the man that laughs at 3:40 smh.
alizebailey3 4 months ago
awesome!!! it really do help m a lot 4 my hw LOL!!!!!!! anyway thanks a lot!!!!!
kristykristy0318 4 months ago
Nice demonstration, but the class is asking stunningly stupid questions.
TheAdmiralPancake 4 months ago 5
@TheAdmiralPancake That was stunningly unkind of you. Were you born knowing everything? Patience is required when teaching students and showing them something completely outside of their experience. I hope you are kinder in person than you are in semi-anonymous postings on YouTube.
aaronakeller 4 months ago 23
@aaronakeller
I'm sorry if my comment sounded rude. A stupid question isn't a question that is stupid. It's more like a joke question. The question "Can I have half?" would be a perfect example. It's not a serious question about the class. It's either unrelated to the class or is a joke.
That's the meaning I was going by. By that definition, your class did ask stupid questions. I didn't mean to call your class stupid, just say that some comments were total non-sequiters.
TheAdmiralPancake 4 months ago 3
@TheAdmiralPancake Fair enough. As a classroom teacher I just ignore that stuff!
aaronakeller 4 months ago
wow he knows what he is talking about!!!!!
pownage2010 4 months ago
Fun With Liquid Nitrogen - Cool Science Experiment
79% of air is nitrogen they claimed while here is 80%
piemanrocksyea 5 months ago
@piemanrocksyea I said 80% because that's close enough in this context. How many significant figures do you need in your measurements?
aaronakeller 4 months ago 2
@piemanrocksyea as far as i remember, he said ABOUT 80%... not exactly 80%... for me, 79% IS in fact ABOUT 80%
aboriani 3 months ago
With the ledeinfrost effect you can put your hand in liquid nitrogen with no harm to you there is a gas barrier around your skin and as long as you do not sustain contact with the nitrogen you will be fine
imak3ueat 6 months ago
@imak3ueat I posted a comment on the video about this and have even posted a reply to this video about the Leidenfrost effect.
aaronakeller 5 months ago
Liquid Nitrogen is cool.
mike123saf 6 months ago
3:36 for WOOW DEWD
1997xander 6 months ago
lol "Can i have half"
rbtm323 6 months ago
If you where to put a human hand in it, would it turn black or would it freeze and give the same effect as the rubber ball ? As in, it would break if you hit it.
TheRaevin 6 months ago
@TheRaevin As I understand it, no. Animal tissue of any kind is not susceptible to shattering upon being frozen solid. Try to shatter a frozen steak from the freezer and you'll see what I mean. The reason the rubber ball can be shattered is that is a single substance that has a glass transition temperature above the boiling point of liquid nitrogen. That means that when dunked for long enough in LN2 it becomes rigid and fragile.
aaronakeller 6 months ago
@TheRaevin look for the Leidenfrost effect on google
moschgul 6 months ago
Thanks for posting! Helped me understand a lot :P
TheCityVilleMayor 6 months ago
This was neat Video..lots of good information
mmousefan010 7 months ago
I want him to be my teacher!!! mazing class what scho0l is that?? great vid :)
Alexfitzpatrick26 7 months ago
Chemistry is awesome :)
TheCliffrey 7 months ago
nice class
andrehellm13 7 months ago
Your teacher is Adam Savage :O
Wimpedout8 7 months ago
I could have been a good student if my teacher was this awesome and the class was this fucking badass
Detallado 7 months ago
@aaronakeller, uhm as cold as it may be, when it touches a surface, like the floor, would an area of the surface somehow get hot?
Nuan3677 7 months ago
@Nuan3677 No. Boiling liquids do not necessarily need to be 'hot'. The floor in this case is hot, in a relative sense, compared to the temperature of the liquid nitrogen. In an absolute sense, the floor is not hot. At least, it's not hot in a way that you or I would normally define it. After having the liquid nitrogen on it, the floor gets colder.
aaronakeller 7 months ago 9
Science is AWESOME!
TheBenzE 8 months ago
Lol 1:52 "Thump"
cloud155207 8 months ago
Can i have half?
domowije1213 8 months ago
Shouldn't you wear gloves when doing this kinda stuff? Even though it might not harm you?
XMagicStar 8 months ago
i want one!
artemide68 8 months ago
can i have half
bigdluckey1 9 months ago
he should've demonstrated some N cooking skills too
PurpleVolvagia 9 months ago
do you need a license to buy this?
lvll138inrs 9 months ago
@lvll138inrs Probably not. But be aware that if you don't already have some experience with it and know how to handle it safely you could be vulnerable to some terrifying consequences. Stored incorrectly liquid nitrogen can cause intense explosions, for example. You know how ads always have a disclaimer at the bottom when the person on screen is doing something incredibly dangerous? "Do not attempt."
aaronakeller 9 months ago 8
@aaronakeller Can you buy this online? I really wanted to do a experiment with this but at my own home if its up to 50 or 60 dollors for maybe a gallon that'll be fine.
mrhilov8 9 months ago
@mrhilov8 I have never tried to buy it myself. I have only ever used liquid nitrogen for demonstrations that I obtained through a university or college lab which normally stocks it.
aaronakeller 9 months ago
@mrhilov8 liquid nitrogen is stocked at most welding supply stores and costs about the same as milk.
679step 9 months ago
@mrhilov8 liquid nitrogen is sold at most welding supply stores and is about the same price as milk.
679step 9 months ago
Chuck Norris drinks this!
ProminentCinema 10 months ago
Put on "CC" and look at 0:07 "I consistently have studios insist bunnies that night" Hahaha
daredevil896 10 months ago
liquid nitrogen is actually liquid essence of chuck norris
MrLethalfire 10 months ago
I'm being curius now,but,where did you found (or make) the liquid nitrogen?
EpicTrollThatTrolls 10 months ago
@EpicTrollThatTrolls The liquid nitrogen I used in this video was supplied by the generous folks in the lab at Bowdoin College in Brunswick, ME. They had it delivered to them by a local gas supply company that also supplies 'refrigerated liquids' (as they are often called). Liquid nitrogen is made by liquefying air and boiling off the oxygen and other components in the atmosphere. To turn a gas into a liquid it must be cooled (a lot). To do this the processor usually allows it to expand rapidly.
aaronakeller 10 months ago
@aaronakeller Thanks.I was just curius.:)
EpicTrollThatTrolls 10 months ago
@aaronakeller do u mean the melbourne brunswick?
Gasolinelitmatch15 9 months ago
@Gasolinelitmatch15 Melbourne Brunswick? No, Brunswick, Maine, USA.
aaronakeller 9 months ago
what property does this follow?
b0x098 10 months ago
i have a question if you were to take something like a orange or apple and put it in liquid nitrogen for long periods of time would it have the same effect as a freeze drier and remove all the moisture from a object such as a apple, or orange
23cecropia 11 months ago
@23cecropia I've never tried it but here's what I think. It would just cause the water in the fruit to freeze solid. Cell membranes would break but probably not enough that much of the moisture inside would escape. So, I don't think you could freeze-dry by simply storing something in liquid nitrogen.
aaronakeller 11 months ago
@aaronakeller
I agree with this only partially.
Freezing with liquid nitrogen is only a partial step in freeze drying. What you say is true, but what you do after is lowering pressure and increasing heat just enough for the water in the object to sublimate. Once you do that, the object has been freeze dried.
formula90II 10 months ago
@formula90II Ahh. OK, if you decrease pressure and continuously evacuate the moisture as it sublimes, then yes, that would be freeze drying. I thought you meant to just dunk it in the liquid nitrogen. Which wouldn't work.
aaronakeller 10 months ago
No, Liquid Nitrogen will not give you frost bite 'instantly'. You can pour it on your hand even dip your hand in it, for a short amount of time of course.
DrewManDrew1992 11 months ago
@DrewManDrew1992 about four months ago I commented: @WoRtH1milli You are correct, brief contact will not cause instant damage. I believe I posted a comment on the video about this... Is it not showing up on the screen at the appropriate time?
aaronakeller 11 months ago
@aaronakeller no its coming up at the right time just some people want to criticize your video before they take a chance to look at the comment popping up in your video saying to go to the video response and stuff like that i love this video, a few days ago my chemistry teacher did a similar demo.
QuickSilverize 10 months ago
@QuickSilverize I appreciate your comment very much. Glad you like the video.
aaronakeller 10 months ago
What would happen if you filled the balloons with helium? Would they float when they come out of the liquid nitrogen?
DillonPiano 11 months ago
@DillonPiano They certainly would float when they came out of the liquid nitrogen. What an awesome idea!
aaronakeller 11 months ago
T-1000 > Balloons.
regimeman 11 months ago
oops i spilled it......
sexywolf99 11 months ago
i wish i had that guy as a teacher.
LIGHTHEFOX 11 months ago
How do I store liquid nitrogen?
Can I just leave the dewar on room temperature? can I leave it inside my car?
What happens when I didn't consume all of the liquid nitrogen?
punchingpower 11 months ago
@punchingpower Liquid nitrogen is stored in two types of containers. One is a large, pressurized gas bottle designed to handle and deliver gases in liquid form. These are vented to prevent explosions. The Dewar flask is a very well insulated thermos bottle. Liquid N2 stored in such a flask eventually evaporates away. I wouldn't leave it in your car since N2 displaces oxygen and you could make the air inside unbreathable. Whatever you don't use will evaporate so use it all up if you can!
aaronakeller 11 months ago
This guy seems like a really good teacher. If my teachers had been more like this I would've done better in school.
TonicMike 11 months ago
Nice application of Charles' Law.
DartmouthAlum96 11 months ago
why would ppl dislike this video..
petdog12 11 months ago
Liquid Nytrogen! It's Miracle!!!
vreaulamatah 1 year ago
Can Nitrogen be combust under any conditions?
SailorSaturn69 1 year ago
@SailorSaturn69 No, nitrogen does not burn in air. Air is (as I say in the video) nearly 80% nitrogen so we should be glad it doesn't. There is an interesting reaction between magnesium metal and nitrogen that is something like burning but it requires a much higher temperature than you'd ever see in a candle flame.
aaronakeller 11 months ago
that's lady's and gentlemen is how classes should be. unlike all of the classes I've been through
zaz0ooo 1 year ago
Awesome teacher! Wish my lecturers were more like this guy, instead they are boring fookers!
Clyde123Frog 1 year ago
What if you put liquid nitrogen on an actual hot griddle....0.0
TalkDaTech 1 year ago
@TalkDaTech More of the same spattering, no doubt.
aaronakeller 11 months ago
@aaronakeller would be awesome...
TalkDaTech 11 months ago
wow, with a teacher like you its almost guaranteed I wont flunk lol :)
silaipek11 1 year ago
3:37 dude.....
xKillTheMachines 1 year ago
Is this high school?
lovemonkey217 1 year ago
@lovemonkey217 Yes, but during a summer program held at a college with access to materials like liquid nitrogen.
aaronakeller 1 year ago
I wonder what happens to Mercury if you put it in this Liquid Nitrogen or you know.. put Liq.N on the Mercury
alitareqali 1 year ago
@alitareqali I think Theodore Gray has a picture of a sculpture made of mercury frozen with liquid nitrogen on his site: theodoregray . com / PeriodicTable (on the page about mercury). I'm pretty sure the stuff just freezes solid and looks like any other metal.
aaronakeller 1 year ago
I'm so looking forward to this class
warcraft4fun 1 year ago
jamie & adam hybrid?
TheLoopThatIsTheSame 1 year ago
what an awesome science class!
PurpleMidnights04 1 year ago
I wish our Chemistry department was this good. App State Chemistry kinda sucks.
Ob1iterator 1 year ago
coolest profesor EVER
datalanding 1 year ago
Very Fantastic vision on science experience to show on! Awesome.
ZENESTASCNE954321801 1 year ago
Comment removed
JohnEdroid 1 year ago
@JohnEdroid I am the teacher in the video. Click on my name and you'll see mostly videos of me doing chemistry demonstrations. (I think you might have mixed up who wrote each comment: my comments begin with @hitokiri657 because that's the person the reply is for).
aaronakeller 1 year ago
@aaronakeller Sorry about that. I removed the the other post so as not to mislead others.
JohnEdroid 1 year ago
He's my 11th grade chemistry teacher. Hes freakin awesome.
mee11mee 1 year ago
@mee11mee he's gonna be my teacher next year if he still teaches AP. Should I be scared..? :p
timisian 7 months ago
@timisian Just be prepared for good quanitites in amounts of work, and take notttttesss.
mee11mee 7 months ago
@mee11mee Did you take AP? Cause i talked to some kids and they all told me not to take it, but I'm still going to anyway
timisian 7 months ago
@timisian no i didnt. just regular old chem
mee11mee 7 months ago
I liked the comment "Nitrogen has no oxygen in it" haha
joelegardner 1 year ago
clean your blackboard!
Velothi 1 year ago
chem next year, i wonder what happens when you put methane gas inside with a flask of liquid nitrogen and light it on fire.... hmmmmm......
evermore66 1 year ago
COLLEGE FTW! I'm taking chemistry in 9th grd. atm
robro96 1 year ago
damn where were you when i was growing up? my chemistry teacher sucked .she had no knowledge like this .well if i ever figure out time warp ill be at the front of the class ,keep up the good work
2011bamafan 1 year ago
Thank you so much, Aaron ;). Been to a lot of help. Been wondering about this phenomenom for a long time, a lot more describing than Wikipedia ;)
Chris
W0rldatpeace 1 year ago
unlike the rest of you, i am made of liquid nitrogen.
well cya, i have to get back to my planet now
lol
2nDoppelganger 1 year ago
You almost make me miss high school.............almost! Great job
jeepcj7dude 1 year ago 2
I'm not into chemistry but this was sure very interesting to watch the whole vid...wouldn't mind taking a few classes like these if a teacher was teaching just like were doing in this vid. :)
Andumeba 1 year ago
mythbusters look-alike
uberbigbread 1 year ago 2
wish i hace had such a good teacher.....
13101988andoni 1 year ago
If only my chemistry / fysics teachers had achieved such a hands-on approach to the classes I had... Great job!
frogreactor 1 year ago
I KNEW I've seen that lecture room before! (horrors from organic chemistry)
Great demonstration :)
Crusader050 1 year ago
Liquid Nitrigen + Snake = SOLID SNAKE!! :D
cid232 1 year ago
thumbs up if you were bored and typed 'liquid nitrogen' =)
cleanloader 1 year ago
If teachers can be awesome like this and make chemistry interesting, you have my spot in your class.
Booyakahshaify 1 year ago
"DUUUUUUDE" X 30
1337bakon 1 year ago
2:52 that's what she said :)
poop333x2 1 year ago
@ ~4:35 Solid nitrogen requires an INCREASE not decrease in pressure... just in case ;)
hitokiri657 1 year ago 16
@hitokiri657 What I said is a bit misleading. The way liquid nitrogen is made is by compressing air (which heats it up) and then allowing it to quickly decompress. Some of the air escapes, taking heat with it. The cycle is repeated until it is cold enough to liquefy. Then by fractional distillation oxygen and argon can be separated. When I said 'reduce the pressure' this is what I was referring to. Of course you would also have to compress it but the hard part is getting it cold enough.
aaronakeller 1 year ago 10
@aaronakeller Oh so you're the teacher. Well yeah very misleading, poor kid was gonna hit the craziest vacuum just to get his solid piece lol. Very nice demonstration, what university is it? My chemistry teacher didn't demonstrate jack, although I have a good grip of the behaviors of matter. Hope u upload some more. ; )
hitokiri657 1 year ago
@hitokiri657 It was actually a summer program for high school students. The program was held at Bowdoin College in Brunswick, ME.
aaronakeller 1 year ago
you have to make the revolution of teachers, if even one hundredth teachers teach like you it would make students learn more
aids696969 1 year ago
@aids696969 Nice of you to say so. I can't do fun stuff like this every day but I agree that it does help keep the students interested. And I like doing it.
aaronakeller 1 year ago
ARE YOU related to helen Keller?
hackerman237 1 year ago
@hackerman237 No relation. Check the phone book: there are a lot of Kellers out there.
aaronakeller 1 year ago
Nice! :D
I've got a question though. As the teacher says at the ending: ''nitrogen has no oxigen in it so it doesn't allow things to burn'' So... Can nitrogen basicly be used for putting out fires? Or is it basicly the same as a fire extinguisher?
TheBeyondNormalGirl 1 year ago
@TheBeyondNormalGirl Nitrogen could in principle be used to put out fires. Nitrogen as a liquid would flow uncontrollably and as a gas would not stay on a fire but carbon dioxide exits the extinguisher as a solid, which stays where it is put. This is probably why carbon dioxide is common in fire extinguishers but nitrogen is not.
aaronakeller 1 year ago
Can I have half? XD
ijakcars 1 year ago
oh man your a cool teach!
superkrex 1 year ago
You're a cool teacher!
TheEwonProductions 1 year ago
my school is too strict and uncool to do anything like this... that is why i quit and I, am now teaching myself at a faster rate.
munchchewy0 1 year ago
you look like louis c.k.
1schoolkid 1 year ago
Very informative; I learned from this video! Thanks!
Funtertain 1 year ago
"can i have half" lmao
assassin7707 1 year ago
Education is fuuun. ^^
Dariusthedragon 1 year ago
i wish you're my teacher eventhough i dont take chemistry :)
turtlepincher 1 year ago 31
@turtlepincher Nice of you to say so. Thanks!
aaronakeller 1 year ago
Also known as the leidenfrost effect
WoRtH1milli 1 year ago
@WoRtH1milli You may have noticed I have a video about the Leidenfrost effect.
aaronakeller 1 year ago
actually I have poured some liquid on my bare hands before in science class but we touched it for less than a second and none of had frostbite haha lol
WoRtH1milli 1 year ago
@WoRtH1milli You are correct, brief contact will not cause instant damage. I believe I posted a comment on the video about this...
aaronakeller 1 year ago
At 2:00 it sounds like he's cooking hamburgers. :)
TheSuperCommentGuy 1 year ago
technically speaking, you CAN touch it, youll just lose your hand :D
thedeathskittle 1 year ago
"You can't touch it" is INCORRECT! You can pour liquid nitrogen over your open skin and nothing would happen. Damage is done when the liquid is stagnant, like if you were to cup it in your hand.
dannycurtean 1 year ago
@dannycurtean I know that. See my annotation right in the video at 0:32. Also, see my other video by the title of The Leidenfrost Effect. It is posted as a response to this video.
aaronakeller 1 year ago
I feel like i'm watching an episode of Myth Busters! <3 Great lesson... I wish my teachers were just as dedicated....
buterflykiss1587 1 year ago
if it wernt for the leidenfrst affect i'cd onlyu have 3 fkngers
runnybabbit12 1 year ago
How does solid N2 require you to "lower the pressure?!?"
I believe you must cool N2 and apply a great amount of pressure!
soccerman1434 1 year ago