Pouring Mercury into Liquid Nitrogen (slow motion)
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- Mercury freezes at 39C --- Nitrogen boils at -196C
More slow mo from periodicvideos: bit.ly/chemslomo
The three slow motion sequences in this video can be seen in more detail at...
Mercury in small container: • Mercury Freezes in Liq...
Mercury in big flask: • Video
Copper in N2: • Room Temperature Coppe...
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From the School of Chemistry at The University of Nottingham: bit.ly/NottChem
Periodic Videos is a project by video journalist Brady Haran: www.bradyharan....
(James Hennessy filmed and edited this video)
A run-down of Brady's channels: bit.ly/bradycha...
This guy.... He is EXACTLY how I imagined scientists looked like when I was 5.
It is a privilege to be able to watch these beautiful chemical reactions and elements, but even more so to have a professor to educate on what is being shown.. for free? THAT is passion in advocacy. Exemplary. Thank you and the whole Periodic Videos team
Steven Serhal WE agree Steven. Have U seen Oil Spill Freeze Salvage now playing on You Tube?
And it's not some loudmouth 15-year-old who spends 5 minutes talking about his channel before and after filming the experiment in his backyard on a phone camera.
We got an experienced lecturer with a calm, honest voice and a Ph.D, assisted by Post-Doctorate students, quality lab equipment, library archives, travel footage, and personality.
The raw, straight-to-the-point honesty is a performance in its own.
More refreshing that a pessimist who delights in being proven wrong.
@@oron61 agree
All scientists should have hair like that!
it's mandatory if you want a PhD, at least in the UK
Dr Tune really ???
Eric Doyka yes
Eric Doyka It's true.
Several haircuts are allowed though. It's interesting to note that in the US the government recently passed a bill that keeps student from graduating if they are bold with a goatee. For obvious drug related reasons.
The professor is extremely into what Neil is doing at 2:14. The face of intrigue.
+naota3k With his tongue sticking out..
I worked with a guy who invented and patented a portable liquid nitrogen freezer so we always had lots of LN2 around...we froze pizza, beer, water, gloves, anything lying around. Most stuff smashed like glass if you threw it on the floor. You just have to have lots of ventilation because lots of N2 displaces regular air and you can suffocate. Supposedly you pass out painlessly and without warning, then die if no one rescues you in time. In fact, some governments have investigated it for humane execution.
The freezing and smashing, or the suffocating?
***** The suffocating, ya nut!
+Josh Adams thats a picture I can't get out of my head...
+Brian Battles Isn't 80% of the atmosphere nitrogen? So why is it bad if you have a bit more?
Cole Loves You 78% N, 21% O, small amount of Argon, CO2, etc...Raise N and the O goes down...beyond a certain point there's not enough oxygen
Love these videos remember when I was at school not too long ago and the science videos were so outdated, you couldn't really relate to them. But now we can make everything slow mo it all looks so much better :)
Never cut, or comb that hair ever again.
This hairstyle is fantastic.
***** Please pass this on to Sir Professor Doc Martin Poliakoff,
His hair-do is so incredibly epic the Smithsonian want it when he doesn't need it any more.
Jeez, you guys should sell "Sir Poliakoff Wigs" on Amazon. You'd sell millions.
2:47 big strong Neil
I made the classic mistake of adding water to sulphuric acid in a chemistry lab in an attempt to dilute it. I suppose the reasons are different, but the hydration of sulphuric acid is extremely exothermic. To make matters worse, sulphuric acid is denser than water, so the reaction tends to occur at the top of the vessel. When I added water to sulphuric acid, the acid started to boil violently which is understandably extremely dangerous for conc sulphuric.
Can you please make a compilation video of all the times the Professor says "WHOOOSH!"? That would be epic.
OMG YES
+Elo Him make it urself?
✈
😐
I don't get it
That's what happened to his hair
r/woooosh
"It would smash his vessel... and he'd have to clean up the mess as well." Haha. Unfortunate little aside.
Yeah, that statement didn't go unnoticed or unappreciated. God bless dry humor!
Great video, you guys are one of the best youtube channels, please keep up the good work and DON"T change.
If you'd like to see the slow motions in more detail, I've popped them online at greater length… Links in the full description!
The move vigorous boiling may also be due to the mercury temperature settling at -39C as it gives off its latent heat turning into a solid before its temperature can fall further, where as the copper is already solid.
And that answers what a chemist do when they are bored
I love your name
+Ahmed Younis thanks (:
+gabigowriel Because Isis jihadists are really into science and technology "Facepalm"
+Ahmed Younis lol :)
+Ahmed Younis Thats how they make their bombs :P
I love this guy! He fits the stereotype exactly, informative and engaging! His hair is awesome
science at its best
No eye protection or gloves? Naughty!!
I was waiting for the puddle to form into T-1000
+kuruptzZz Lol I was thinking the same thing!
This is really amazing footage Brady, well done.
How is Neil so buff, damn.
Houston Sterling He's a tank man
We love The Neal. Sometimes cleanliness must be compromised for science!
neil is the hidden star of this channel
Neil is buff as 2:47
yeah LOL
You should've used gallium. It's much safer since it's not toxic. So you can do it on higher temperature and tolerate a bit of splash without worrying about toxic metal liquid droplets everywhere. In fact, if it splashes, just cool down the room with air conditioning, you can pick up those solid gallium pieces by hand.
Virtualgod2009 so . . . You're making a Death Ray?
Virtualgod2009
708lb of lead=~1 cubic foot; lead costs about .91c per pound; to keep it directional you need 4-5 bricks, expensive but not over 100k. I assume you're referring to gallium which costs about $2.5 million per cubic foot.
Is my math right? The death cannon is cool BTW.
Virtualgod2009
I was thinking cast lead, you just need a heat source (600F) and a mold. Really the only thing you need to worry about is yourself, building a wall between your observation point and the source matters most. I don't build tubes and suggest that you use your own judgement if you go with any shielding system. The radiation is released from the whole length of the tube so it does have to be shielded along the length if you want to have full shielding.
The violence of the reaction is due to the greater surface area of interaction between the two different elements at different temperatures. A safe reaction with greater surface area can be had just as easily by putting in a vial filled with some #9 bird shot from a shotgun shell. A large number of spherical objects will yield a large surface area.
The shot can be at room temp just as the mercury was.
Virtualgod2009 Why not just use water? I could be wrong, but I thought you only needed a relatively small amount of water to completely absorb the dangerous types of radiation.
Great :-) Just great.
I guess, Martin did dream of such experiments when he was boy and imaged how it would be to them. And now: He is a professor (with a great team in front and behind the camera) showing his ideas to an world wide audience. And all of that "on top" of the research and teaching he is doing for the university.
Thank you Martin, Brady and Neil.
Don't mess with Neil. He looks kinda mafiaesque. Horse heads in fridges and all that.
That bubble sheath around the mercury while it is being poured in is craaaazy
OMG OMG OMG! New Periodic Videos!
Best, Jan 17th, EVER!
Boiling mercury please!
That's incredibly dangerous, as boiling it would send gaseous mercury into the air. In the right conditions, sure, it's possible, but is it practical to do for simple observation?
taofledermaus did a video.
***** im sure it can be done in controlled conditons somehow and it doesn't have to be at boiling point just close enough to produce a more violent reaction which is what we all want to see.
nilered did it
Re the end of the video: "Neil would not be happy"... No-one wants that...
Why doesnt Neil talk?
He's like Morn.
Alkali metals don't create explosions in water because of the difference in temperature, but because of hydrogen gas and oxygen exploding.
That wasn't the point. They were talking about an effect of heat transfer that can be observed in alkali metals reacting in water. Look up fuel coolant interaction, as they said they were demonstrating.
Actually the explosion between an alkali metal and water is a coulombic explosion.
Brilliant experiment.
Next time, molten lead/iron/aluminium in liqid nitrogen.
Or maybe better. Since it may work like "DON'T POUR water into acid or water into hot oil" rule, it might be explosive if you pour liquid nitrogen into liquid lead. Reverse the proportions so that a bit of cold gets overwhelmed by lots of heat.
Some really cool fluid dynamics happening here. The Leidenfrost effect is in full swing with both the copper and the mercury. Plus with the mercury we get to see some fun battles between turbulent mixing trying to break up the mercury droplets and mercury's ridiculous surface tension trying to keep them together.
I wish that I had this guy as a teacher in high school chemistry! My teacher that I had was extremely intelligent, and really knew his stuff, but was not able to make the class interesting, nor was he able to transfer his knowledge to his students.
Life is just one HUGE science party for the professor and friends, what a blast! :D
Ever since I started taking chemistry in school I loved this channel. Also my teacher said she is going to teach us *some* organic chemistry. Is it really that bad?
1:52 Looks just like some 80s music video
kind of reminds me of boards of canada
Uncomfortable Dog Right
ｖａｐｏｒｗａｖｅ
a e s t h e t i c M
Mercury is really interesting
Mercury and liquid nitrogen, the two things that every home chemist wants but can't really get.
1:20 reminded me of RHNB in water.
Art and science combined -- what more could we ask for!
I wonder about a metal heat sink in liquid nitrogen. Since it had increased surface area over a lump of copper.
Neil, Britain's answer to Walter White.
I am a kid and I think that you are AWESOME!!!
May not have demonstrated liquid heat transfer, but the mercury going into the vacuum flask was a nice demonstration of the leidenfrost effect.
Love your tie, and all your videos. :)
It would be so awesome to have this professor
what if you sprayed the mercury into the nitrogen? would mercury even go through a spray bottle?
"Smashing the jug....lest anyone copy my work...."
"As I remember, he cried."
Dang. I was really quite excited to hear the boiling mercury part! It's the first thing I thought of seeing this video
Boiling mercury video please!
Imagine standing in front of a committee asking for a grant and using his hypothesis. WOOSH! 😂 He's so great.
Neil is Mr. Clean
1:23-1:36, really neat shot.
Thanks to this video series for helping me finding an appreciation for chemistry.
For a controlled experiment, did you ensure that the heat is the same in both cases, i.e. account for the different specific heat capacities by controlling the mass? Or something similar maybe involving heat transfer coefficients? Otherwise you can't draw much conclusion from comparing the copper and the mercury.
Neil was born to clear up, "a mess".
best title of video ever.
I became very fond of this channel
It's also more violent because there's not enough heat transfer once its spread out to produce the leidenfrost effect, which is visible with the copper bullet earlier.
1:01 will be my new ringtone
First time I saw solid mercury. It's really shiny like iridium and then it was losing structural integrity as it was melting. Seeing a solid metal melt at room temperature really is quite something...
His WOOSH makes me YAAY
Bych chtěl zkusit si někdy potěžkat tu nádobu s rtutí, musí bet taky docela hustý :D
So this is how skynet did it
Reminds me of an interesting experiment I did recently. I bought some Bismuth and heated it up above melting. I'd guess it was about 400C. I then poured it into cold water. It made a popping sound as it exploded in the water on contact. Bismuth doesn't really react with water, so this was pretty much thermal explosion. The result was mostly tiny dust-like bits if bismuth, with small shards of metal. I recommend you see for yourself. I'd love to see that on high speed cam! BTW, Bismuth freezes ~272C and I was doing this to experiment with crystallization techniques.
that's the periodicvideos that I like
this is why chemistry is the greatest subject !!
Would have been funny if you'd said "-40 degrees", then someone asked "F or C?" and you just said "Yes."
Nicely done as usual. Would the fact that the room-temperature Mercury be affected by the Liedenfrost effect? There looked to be a sizable gap between the surfaces of the respective liquids.
Poor Neil. Why is it that hes always left to clean up the mess?
Neil in a tight fit shirt... *drools*
I know it's all about opposite reactions and all of that, but it still baffles me to see it in action. It's so hard to get what is happening into your brain!
The nitrogen starts to boil while the mercury starts to freeze. To me, that doesn't add up, yet here it is demonstrated to be true and I know it is true.
This is exactly why I love science!
That glow around Neil in the thumbnail, does that mean he is a God?
I thought you caught a comet out of the local planetary vicinity.
Those glass vessels will make excellent cocktail glasses.
Sir....your hair is awesome.
Thumbs up if you think they should ad Liquid N2 to mercury.
maybe. lets find out.
Doesn't the Liquid N2 float on mercury? Oh well, its worth a shot :)
It would most definitely float, if it stays liquid. I am sure if you add the n2 slowly it will just steam off very quickly . What I an wondering if you add a lot what will happen. No doubt the N2 will bubble off but what I really wonder is what will the mercury do. I believe the top would freeze and sink in some way, causing some sort of convection that will bring warm material to the top and speed up the n2 evaporation. It might be lame it might be cool.
This is probably my favourite video so far! :D
Professor, I think that you forgot about the energy transfer coming from the latent heat. Even if it is low compare to other metals, I think that most of the energy creating the phase transformation (N2 l -> N2 g) was coming from Lf. Thank you, great videos by the way!
I find it interesting that the close up at the end of the reaction closely resembles that of a firestorm when zoomed in on with a high speed camera and shown in slow motion.
i have no fucking clue why i've been watching this kind of stuff for weeks... aluminium in ant pits, lava in ice, mercury in corn syrup. WTF is wrong inside my head? lol
I love Prof Martin's ending answer. lol.
Both the lack of splashing and the vapor surrounding the mercury droplets are interesting see. The lack of splashing probably being the result of liquid nitrogen having a tenth of the viscosity of mercury. For the vapor during pouring, I would have loved to see you guys discuss the leidenfrost effect.
Poor Neil always having to clean up the messes.
+Demon50 Or, as the professor says: clear up the messes.
Great video!
This would be a really good video for demonstrating the scientific method to a chem class.
3:08- Mercury be like- GET OUTTA MY WAY YA MADAFAKAZ!
They have flash boilings of liquid nitrogen vats form super conductors. The super conductor near instantly switches state from a conductor to insulator with a current that requires a copper wire size that is 10x the size of the super conductor.
please make more "the proff" t shirts you would make me a very happy man
There is a phase change, too, which involves an extra lump of energy going into the nitrogen.
Nice job Neil !
I think the bubble of nitrogen gas around the mercury was the Leidenfrost effect in action.
I love this channel.
We would indeed smash Neil's Vessel. "Hey Sam what'd you do Saturday night?" "Dude I smashed this Vessel so well you wouldn't believe." "Daaaayum!"
Great video. Th surface are effects contribute but perhaps more important is the fact that the mercury is changing latent heat with the nitrogen as it is solidifying. While the copper is changing sensible heat as it is just cooling. Enthalpy changes associated with phase change are often 2-3 orders of magnitude higher than enthalpy changes with temperature, hence the difference in the amount of heat released. Surface area also contributes but I would suspect the change in surface area in this case wouldn’t be larger than one order of magnitude.
That guy has a sweet hair do
To understand science you must look like science
Dude, keep Neil happy. Did you see that man's guns? Look @ 1:08!
this is a man of science!
You should totally try this with liquid oxygen. I double dare you.
I don't think you can get that much liquid oxygen, its too cold
You can get it, It's only pretty dangerous.
TuntematonSika well, you learn something knew everyday
Snatxi I believe liquid nitrogen is warmer then liquid oxygen because if you fill a tin can with liquid nitrogen the aluminum will force oxygen atoms into the bottom of the can where they then condense and form liquid oxygen but it is only a very small amount. the only way I've seen people harvest it is with an extremely strong magnate
Snatxi Apologizes but I am lost