Melting Spoon in Tea - Periodic Table of Videos
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- čas přidán 13. 05. 2018
- A metal alloy spoon melts in tea.
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Featuring Professor Sir Martyn Poliakoff and Senior Technician Neil Barnes.
See videos on all 118 elements: bit.ly/118elements
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From the School of Chemistry at The University of Nottingham: bit.ly/NottChem
With thanks to the Garfield Weston Foundation.
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Why not use Gallium?
Well - besides the fact it's not what we were sent by our fan - Gallium has a very low melting point. It'll melt in your hand... Not as fun as a spoon that is nornal in thge hand but then melts in hot water!
Gallium: czcams.com/video/N6ccRvKKwZQ/video.html
Hey, there is a mispelling of "normal" and "the". Hopefully I don't come off as rude. Loved the work you and the professors do.
No single word 'Eutectica'??? You've disappointed me... a little bit.
That was my thought too.
Sorry to be the one to point it out... But, "thge" is not a word. Couldn't help myself there...
Or cesium ? I believe that it’s the dissolving part, but I am not sure
The unthinkable has happened, we've finally heard Neil's voice!!!
Neil... Neil can make sounds?! 0.0
Steven003 no, thats Brady
It's like that one time Ferb talked
+RaptorBeast7 Could be. :/
I do have a list of videos he has spoken in for a second if anyone is curious
3:35
3:18 nice use of protective goggles.
There’s a great book called “The Disappearing Spoon.” It’s not written by a chemist but a journalist-writer. He discusses the histories of the discoveries of various elements and the human interactions over the past couple of hundred years.
I love the fact that the Professor gets excited over something as simple as this. You'd think that he's seen it all in his career but he still thinks that a spoon melting in tea is neat, and worthy of a video.
2:27 IS THAT NEIL'S VOICE?
That sounded like Brady to me
Nope, Brady
Pretty sure that's Brady.
I think that was brady
Thomas Chow - I gasped.
I vaguely remember reading about such "prank spoons" in some book when I was a child, perhaps something like 35 or more years ago, and I was fascinated by it. I was an avid library goer when young and the local library had quite many books that explained science subjects in a youngster-friendly manner, all of which I read many times with great interest. I think the metal referenced was Wood's metal. Of course I could never get such a spoon nor did I really even try :)
Is the Fields Medal made of Field's Metal?
Ze Rubenator no XP that'd be so sad, imagine getting a nobel prize and it melting in you car on the way home like a chocolate bar!
Imagine getting a Nobel Prize and living in an environment hotter than 62C
dork What environment would that be? A sauna?
qwerty687687 read comment before mine
I have been watching so many of these videos that as an American - I changed my phone to not only Celsius - but have started saying centigrade instead of Celsius.
We did it guys, we have Neil’s voice on camera, even though it’s only a “Aargh!”.
Nope that was Brady.
In one of the old potassium videos you can hear Neil talking about how a lump of potassium is quite big
czcams.com/video/6rdmpx39PRk/video.html Go to 48 seconds.
+mannys9130 his voice sounds like it should, somehow!
This kind of demonstration is what got me into science so it is never a waste of time or science.
I would've guessed Gallium.
I knew this would happen ... Spooner or later.
lol
Ew
Spooner or ladle*
Ha!ha!
You get a handle on it.
A few years ago I made the same alloy, it's really fun to cast metal things with just boiling water
We often think of salts as being crystalline in their dry state. But there many such crystalline salt combinations (like choline chloride + urea) that when mixed together, WITHOUT ADDING ANY WATER, will take the crystals into a liquid state. A show on such DES (deep eutectic solvents) would be very visually interesting. :)
Karabetter I think they used an ionic liquid in a previous video due to is low vapor pressure under vaccum conditions.
Thank you Professor, and Neil, and Brady! This makes me think of spoon bending magicians!
I freakin love Periodic Videos. I even did fanart of you guys. I'mma show my science teacher your videos so the Chem classes can watch.
"The Tea Bag is just for fun"
best lab note ever
I love the term 'centigrade'.
It's not heard much anymore apparently. I mentioned it in conversation recently and no one younger than me seemed to understand what it meant.
Patrick Beecroft
Really? Common daily use in my lab.
I use it all the time. I actually have to mentally switch gears to say "Celsius"
"Centigrade" is also nicely self-descriptive: the name inherently contains the idea of a scale divided into a hundred units. Of course the scale obviously goes beyond the boiling and melting points of water, but the name is a friendly reminder of its origins, if nothing else.
you can also (or could, a few years ago) buy spoons that melt (dissolve) in tea, but they are made of silvered sugar or chocolate. they probably wont melt as fast as the gallium ones, though.
Why don't you use Gallium? What are the benefits when using some kind of alloy? Though a fun little experiment.
It's pinned by no explanation :(
Gallium is expensive
Gallium melts at a lower temp and isn't as strong.
Dont think this is the reason, but if they used gallium, they couldnt have hammered it the way they did, as gallium is very brittle
Also, rose's/woods metal is used in chemistry for heating baths, so they probably had it laying arround the university.
There's only 2 channels I like to watch, this one (because Im addicted to chemistry) and Adya, I dont care about how wonderful and exciting physics and maths are - I don't care, that's boring - for me its chemistry all the way! Thanks for such a wonderful channel and a great prof!
I just read that Ford moved their magnesium parts production to Nottingham. This was following a fire at the main supplier a few weeks ago. I know you guys did a magnesium video before but if you have more info related to the topic that would be awesome!
Neil is super buff
Jake Roosenbloom Neil is SUPER STRONG
You just have to love these videos
I'm surprised that you didn't contact a props department of a theater or film studio, since I've seen the melting teaspoon trick in countless movies and TV shows.
These videos are the only thing I love watching.
One use of Wood’s metal is in the detector of a crystal radio. A galena crystal is embedded in Wood’s metal which is the cathode of the detector. The cat’s whisker is the anode. Use of low melting point metal prevents damage to the crystal.
When I was a kid, I had this big lump of Wood’s metal I used to play around with. It was really fun to melt and cast it all over again.
Neil's such a Boss.
I wanna be like him when I grow up.
If someone played a practical joke on me with this metal, I would want to keep the metal.
We use these sorts of alloys in radiotherapy to make per-patient customised collimation for megavoltage electron and photon beams. The blocks are about 2cm thick for electrons and about 8cm thick for photons.
Fields Metal - not to be confused with a Fields Medal.
I LOVE this channel!!!
IT'S FANTASTIC
Ask Cody’s Lab for his new X-ray analyzer. Haha. Would be an amazing cross-CZcams episode.
I see them everywhere online, usually some sort of gallium alloy, or Fields alloy
It was really nice to watch it!
I hope I'm still doing excited things in my older age like you!
"Hey we have no idea what this substance is but we're gonna heat it up and melt it anyways" seems like a perfectly reasonable thing to do haha
long time no see!
Can you do a video about novichoks? That would be really interesting.
they did one on vx and was interesting, I could be wrong but think the novi works the same way the vx does.
I'd also be interested to see how they can identify whether a sample of a substance matches a known chemical structure.
Fun fact: "novichok" is transliteration from Russian "новичок" which means "newbie"
Привет русскоязычным зрителям.
It just buzz name for media.
What it is and does it actually exist. Dunno
Probably nothing more than project name ;P
@@electronJarvs The publicly available information is that the Novichok agents are chemically very similar to VX, yes.
Once again enjoying greatly your video... Thanks Professor Poliakoff and Neal.!!!
Nothing more interesting than all the different metals and chemicals. 👍👍👍 A little bit of Universe in the laboratory.
2:26 Neil ANGRY!
Hi from Nottingham ❕ Big Like 👍
Love you guys thank you
It’s Great that you tried it beside you did not know what metal it was. It was very interesting!!!
I love Neil!
That must have been a real dedicated fan to send you that much fields metal, that stuff isn't particularly cheap
but not very expensive either
100g are around $80. Not cheap but also not that expensive.
i know, $80 is quite the investment for a fan to make towards a CZcams channel in my opinion
The joy of seeing periodic table videos is amazing 😍😇👌👌😎📹
pharmakon rx watch my vids
pharmakon rx thanks
Please do a video on phase change materials (PCM), like sodium acetate
Needed this bit of awesome
Excellent
It drops like a melting icicle, amazing
Candid camera did this years ago in a restaurant, but I think it was Woods Alloy that was used.
@2:28, I gasped that ever-stoic Neil let out that groan. I'm shook.
Great video
Keep great job.
Wow, you won a field's metal?!
Wood's metal is used industrially I think, as heat-sensitive triggers. Fire-suppressing sprinkler valves are sealed close with Wood's metal until the heat of the fire melts the seal so water can rush out to douse the fire (or something to that effect).
Its used in some fire sprinklers: en.wikipedia.org/wiki/Wood's_metal#Applications
There's another Scientific phenomenon here too, as the spoon melted, the alloy dropped to the bottom in the form of small spheres. This was due to Surface Tension. The alloy is denser than water, hence sinks to the bottom, as it does so it assumes a surface of least energy, and that is Spherical.
So there you go : Chemistry and Physics in one video !
Love the vids
I read on Wikipedia you can solder glas with it. Roses metal is anyway useful for soldering.
That was a nice bit of fun. Thank you mutch. Did I hear mutters of golly gee and gosh darn when the spoon broke? Peace love & jello
TomCat
Awesome!
This man is trembling with science.
Please could you make a video on how the alloy was analyzed to determine what it was made of
They got me on the thumbnail this time! It was still cool though, I, like them, wanted to see a real spoon melting away.
We used to buy those spoons in joke shops. They were made from Wood's metal. I still have a sample, cast into the shape of a long-defunkt glass bottle.
Why not use Gallium? That is a pure metal (not an alloy) and melts at 28 °C. It’s a common trick, and it might be far less expensive than indium-based alloys.
You can find that on amazon or ebay. You can even find some molds to shape it in a spoon or whatever.
Also, check out the "Nitinol" alloy: a shape-memory metal. It’s quite amazing!
These alloys are used in the optical industry during the lens cutting and polishing process to adhere the lens to a chuck. Not used as much any more due to health and environmental issues. many labs have switched to wax. But wax can't hold a candle to the alloys. (pun intended). It is amazing how hard the alloys are at room temperature unlike wax.
Now Brady's met someone who got a Fields Medal and someone who got some Field's Metal.
To get a proper spoon shape from that mold would be easy, have a normal spoon with a bowl the same size as the mold's "bowl" and a tooth pick. Fill the "bowl" halfway and the handle just enough to make a handle, place the toothpick over the handle channel, place the real spoon over the mold so the base of the bowl is in the mold and move the toothpick to a spot that allows the bowl to be into the mold as much as possible at the right angle while keeping the handle out of it. Let it cool to room temp and use a file to make it even more spoon shaped.
Or you could make a 2 part mold of a spoon from plaster with plastic cling wrap from the kitchen to prevent the plaster halves from welding together and an old shoe box and lid to contain the mold. Mix enough plaster to fill the lid, fill it and let sit until it is stiff enough to hold the spoon from sinking.. have to push it down in fact. and then cut a channel from the handle to the edge of the box top and a smaller one from the bottom of the spoon to the top an inch or so away from the first, insert straws, straw, stir sticks, rolled paper,1/4 cooked pasta, anything into the channels. Cover it in the plastic wrap with the wrap following the shapes as close as possible. Once the plaster is dried and cured fill the other half of the pox with fresh plaster and put the lid on it, Then flip it upside down carefully and put something heavy on the bottom of the box that's now facing up, let it dry and cure. Once dried and cured sperate them, remove the wrap and everything stuck into the lid plaster, put the lid back on and pour your melted metal into the channel hole that goes to the handle. After it cools to room temp separate the shoebox parts and remove the ugly spoon. Trim it down and file edges to the correct shape. Maybe even flash it with a torch just enough to remove file marks by melting the surface like polishing scratched up Perspex with a torch.
can you make a video about top 5 fastest chemical reactions ?
This is very interesting. Does these same teachers still make videos?
Got to have the tea bag. details are important, how do you know that Tannine DOESN'T have some sort of effect on low temperature alloys ?
Now this is some Cody's Lab type content right here! You should crossover.
Sweet vid
3:19 - Brady's all like "safety first!"
nice experiment, also an opportunity to show how you found out that its Fields metal. Spectroscopy or how did you do that? explanation in a next video? I would love it ... Greetings from Holland oh sorry the Netherlands.
One of ten videos I know of where Neil "speaks"
I have a list if anyone is curious
Munjee Syed damn why would you collect that? :D
Серега Петров why do people collect gold?
Munjee Syed haha
"Neil"
I always forget how much I love this channel. It's been a while since I've watched a video of yours. But glad to see you're still making fantastic and interesting content. Love you guys especially the professor. Keep up the wonderful work you guys do.
Woods metal, Used in machining delicate parts and for making musical instruments. At Boosey and Hawkes.
Thank you for giving me the mental picture of the Professor entering a joke shop.
Gallium, Tin and Indium melts at 15*C :) Very interesting alloy.
And he did it properly; there is a tea bag!
Slight notes of infused tin and cadmium sounds nice in tea.
couldve used gallium for this? or a metal/alloy wich melts a bit higher?
Would the Field's Metal have been more ductile if it had been heated to _near_ melting point before hitting it? Like a blacksmith bending iron to make a horseshoe, for example.
Do you know if the mixture of metals was eutectic or not? These kinds of experiments actually have some importance in making soldering components.
this old man is awesome
2:27 HE FINALLY MADE A NOISE!!! 🤯
Possible Fields metal because Neil uses bit force to shape it. Melt point is around 63 degrees. Could be other fusible alloy with bismuth /lead combo.
Sometimes the "scientific purpose" is quite simply reminding oneself that you are still excited by science.
That was cool, how was the metal analysis carried out?
Zylon FPV Mass spectrometry maybe
It's a bit hard to make out the figures but it looks like an x-ray spectrum I'd say. You essentially just stick the sample in an electron beam and see what characteristic x-rays come out due to knocking off the inner electrons in the atoms.
yes I agree it looks like EDX analysis to me, because of the electron image. It doesn't look like mass spectrometry. Or it could be electron microprobe.
That analysis was most likely conducted using energy-dispersive x-ray analysis (EDX), which is a very popular add-on to scanning electron microscopes; from the look of the output figures (straight from the automatic element identification of the point spectrum) I would say it was using the Oxford instruments Aztec software. I use the same in my day-to-day work.
Easy enough to do - put small amount of metal onto a stub stuck with carbon tape, stick it in the SEM, run a spectrum (typically 30kV accelerating voltage), then Bob’s your uncle.
Quite enlightening. Even tho this clip should be marked mature, considering you got naked atoms now....
What's the BOILING point of Field's Metal? Weirdly enough I can't find info on this.
Or is it just the same as the component metals, so you could theoretically separate them via distillation?
Only if you have time to respond: Are any of these alloys (as well as Gallium) safe for use for food? For handling?
Ok two things, Neill, the beam of a vise is not for hammering on! And I think it must be very similar to copper that it work hardens very rapidly and becomes brittle. So beating it slowly would make it break easily.
Awesome!▫