Two earthquakes with a magnitude of 7.6 and 7.8 occurred in Turkey. damage and deaths are too many tens of thousands of injured and thousands of deaths . @TheActionLab please help Turkey. The state is very inadequate in this regard.
What happens if you break a capsule of water in to Cesium? And i want to see what happens if the water and sodium are both liquid. First liquid sodium into water then water into sodium.
You have a good enough beard and ponytail to advertise a manscaping product, but you need to figure out a way to collect audio without having that lav mic pull your t-shirt halfway down your chest. That sloppy neckline sabotages your video.
After we observed the sodium reaction in high school, I always wanted to get my hands on some cesium, learning that it is even more reactive. So while the result was a tad underwhelming, this satisfies something I’ve wanted to see for 20 years. Thank you!!
just because caesium is more reactive than sodium ( unless u heat it to around 600 c), it doesnt mean the reaction is more energetic, thats why its pretty underwhelming. cody’s lab has explained this in the video where he made the 1mil play button out of caesium also im a hobbyist not a chemist, pls do correct me if im wrong
@@tomasbalnionis1399 Not correcting you but, I have heard that Caesium does indeed have a more violent reaction if you were to liquify it enough/heat it up, not sure where I got this from, but I hope someone tries it(ofc with a safe distance) But after seeing this I'm not entirely sure anymore.
Goldilocks tried the Lithium reaction, but it was too slow. Next she tried the Cesium reaction, but it was too fast! Finally, she tried the Sodium reaction, and it was just right.
Recovering the cesium is possible and worthwhile, and required by law in most places since one is not allowed to dispose of cesium down the drain. Since almost all cesium salts are soluble, it's probably easiest to evaporate off the water (any combination of heat and vacuum) and collect the salt that remains. It might be best to start by neutralizing by bubbling in plenty of carbon dioxide, and then collect the dry carbonate salt. A less convenient way to neutralize is with a mineral acid and collect the salt (chloride, sulfate, nitrate, phosphate etc depending on the acid used). The advantage of using CO2 is that one does not need to use an exact quantity of it since it will leave no residue when evaporated. Once the salt is collected, it can be sold or passed to specialist labs that extract the metal, which, in the case of cesium, is almost impossible in a conventional lab without special equipment
There is a video like that somewhere, but I don't remember wich channel. It was very spectaculair. As soon as the metal touched the water, it formed many 'jets of electrons'. They wanted to leave the metal so bad that it ripped the sample apart in a microsecond or so. It finally made me understand how a large sample of metal could explode so fast, like before all the atoms had time to touch water molecules. It really was one of the most spectacular chemistry videos I've ever seen! If I van find the video, I will update this comment for you.
@@deusexaethera The very strong positive charge of heavy nuclei (Francium has 87 protons) results in electrons being pulled very close to the nucleus as compared to lighter elements (hence more Coulombic attractive force). Another effect of electrons being pulled in that closely results in the electrons moving at speeds close to the speed of light and becoming heavier than expected due to relativistic mass expansion. The combination of more Coulombic attraction and heavier electrons means the outer shell electron of Francium has a higher ionization energy than expected.
@@deusexaetherabecause francium is a heavier element, it’s more positively charged for its size compared to elements like cesium or potassium. So it holds its electrons tighter which means more velocity, which at those speeds on those scales basically creates mass, or at least pseudo-mass. This makes it harder for it to be attracted to a different nucleus. Cesium is actually right up at the limit before this effect takes place
We live in a universe where anything can happen, including but not limited to Manscape purchasing Cesium at a higher cost than gold per gram for this man.
I would like to say that it is partially because larger amounts of Sodium and Potassium can typically be used that they sometimes get bigger reactions. Cesium is expensive, and using more than a small amount Cesium is often very difficult.
never really "got" chemestry when I was in school, but through your videos explaining the little picture it's making a lot more sense.... wouldve been really helpful about 45 years earlier...cheers
One of the greatest and most memorable experiences of my life was given to me by an educator. I'll be vague as he isn't dead yet. He was very creative in his methods. He introduced a handful of us to the reactivity of sodium by chucking a large block of it into a small body of water. It exploded quite a few times. The chunk didn't come apart for a bit and the explosions were enough to heave it out of the water while it was still one piece. I chose "heave" on purpose as it was more of a riding the wave scenario, but it would leave the surface of the water and travel a bit. They would put him in jail today, but I retained everything he ever tried to teach me.
My high school chemistry teacher (who was highly overqualified for his job, having a doctorate, many published scholarly papers, etc.) told a story about his younger days in Amsterdam (he was dutch with an accent that went perfectly with the "chemistry professor" gig) when his lab group were moving from one building to another, and they had a big hunk of potassium that they just dropped in a canal. It sank to the bottom and they just sat there and watched because it wasn't reacting, wasn't reacting, wasn't reacting... and then as a gondola approached it, went off like a depth charge with flame and smoke and all that good stuff. Of course, the gondolier had no idea what was going on, and crashed the gondola into the side of the canal trying to avoid the explosion. (But of course, it was going slowly, leisurely, so nobody was hurt.)
0:16 I feel it’s worth noting that Francium is actually less reactive than Cesium due to relativistic effects on the electrons found in sufficiently large atoms
francium (if you could get some) actually is less reactive than cesium due to quantum effects. It's been a couple years since if've taken quantum chemistry, so i'm not exactly sure why (we didn't study that specifically) but super-heavey elements are less likely to exhibit the same trends as the stable ones in their periodic group. for example Oganesson is predicted to be a solid even the it is in the group of "noble gas"
@@Axman6 No, from the country which was once part of the Frankish Empire and is still called Frankreich in German (and similar in related languages). In Classical Latin the c would be pronounced "k", but in Late Latin it would be "ch", as in modern Italian.
0:17 incorrect. The half life isn’t the reason you can have only a few atoms at a time, it’s because there are ONLY a few atoms at a time to be had (due to its extreme atomic instability and the fact that it’s not on many decay chains). There are ways to produce radioactive compounds that have half lives of a few minutes, seconds, microseconds, etc.
ปีที่แล้ว +8
Cesium is even more reactive than francium. Due to the size of the francium atom, relativistic effects already arise in the electron shell there, which reduce reactivity.
You should qualify it by saying "Cesium would be more reactive than Francium... " as Francium can never be collected in enough quantities to study its chemical nature, as any visible samples would instantly vaporize because of its high radioactivity and low half-life. What you quote is theoretical prediction.
0:17 I think this part was phrased very poorly. The reason there are no weighable samples of francium is not the 22 minute half life of 223Fr. This is a fair amount of time and would easily allow us to study it in detail. The problem is that there are no efficient decay chains to produce it, since during the alpha decay of 227Ac only 1,38% of the decay products are 223Fr. Together with the long half life of 227Ac (21,7 years) no meaningful amounts of 223Fr can be seperated. Oxygen15 for example has only a 2 minute half life but has medical uses and can be generated in a cyclotron.
Cesium is NOT liquid at room temperature, its melting point is at 28 degrees celsius and 0:06 is plain wrong. There are only 2 elements which are liquid at room temperature: mercury and bromine.
cesium is actually a solid under ambient conditions, so unless you heated it with your hands to melt it (ca 28 °C), your sample very likely contained some other (earth) alkali metals as impurities stemming from the synthesis of the cesium
For those of us who aren't too well versed in such stuff: How is your Caesium capsule, which you handle with your bare hands, different from the Caesium (137) capsule that threw Australia in a panic?
Cesium-137 is an isotope, whereas the cesium he is handling is the normal element. An isotope is an alteration of an element with the same atomic number (which is the number of protons in the nucleus) but a different atomic mass (caused by a different number of neutrons). Cesium-137 is an isotope with an atomic mass of 137 compared to the normal 135 of non-altered cesium. Because of this difference, some isotopes are radioactive (wildly so in the case of cesium-137).
@@MatteoCampinoti94 the only thing I would add to help connect dots for the OP is that the smaller number of neutrons in the highly-radioactive cesium 135 means there's an imbalance between the forces keeping the nucleus together and the interior repulsive forces of the protons pushing against each other. That's what makes it unstable and so happy to split apart in radioactive decay.
I work in the Oil and Gas industry; when drilling extremely high-pressure formations, we use Cesium Formate as the drilling mud to counter the pressures. My question is, how is the Cesium stabilized? An interesting fact about the Cesium Formate is that you can't buy it; you must rent it. For offshore jobs, a boat pulls alongside and delivers it to the rig. The ship stays until the job is done, and you must pump it back to the ship. As you can imagine, it is a costly operation. Rough numbers - Gulf of Mexico Sea Water is about 9 pounds per gallon. Cesium Formate is in the 20 pounds per gallon range.
Cesium melts at 28.5 Celsius, which means it is solid at room temperature. It will melt with the warmth of one's hand as he demonstrated. There are only two elements that are liquid at room temperature (Hg and Br)
Maybe his room is 30 degree. But google says "Different institutes define different standard room temperatures but the worldwide accepted range of room temperature is taken from 20∘C to 25∘C". So ye...
@@d4slaimless thank you. Second comment I saw claiming room temperature to be above 25. That is a pretty warm room by my standards. I dunno the conversion but 68F is ”room temperature” to me, and that is definitely not 29C.
@@XiaolinDraconis there is quite a number of different standard conditions in different areas of science|industry. IUPAC suggests it is temperature of 273.15 K (0°C, 32°F) and an absolute pressure of 100 kPa. Accroding to NIST it is temperature of 20°C (293.15 K, 68°F) and an absolute pressure of 1 atm (101.325 kPa) However there is also a term in thermodynamics "standard state". Standard state does not specify any temperature, but it is usually refer to 298.15 K (25 °C; 77 °F). I think 25°C (77°F) is the most applicable number since phase transition is a thermodynamic process. Of course one might argue some different reasons. Anyway be it 0°C, or 20°C or even 25°C Cesium is solid at those temperatures.
that's weird. why didn't that thing created a bigger explosion? in the tv show brainiac science abuse they threw it in a bathtub full of water and the explosion was like a greenade.
Who needs caesium when my sodium exploded when it was submerged in water. For those who want the full story: When I was halfway through secondary school we did a demo of the alkali metals. At first it was going well, the Lithium was uneventful. Then we put the sodium in, initially for 2 seconds it reacted nominally with the water then it stopped, it just stopped. It stopped reacting almost completely for just long enough for our brains to process what was going on. Then Boom, it just exploded, leaving smoke trails as tiny fragments were sent spiralling into the air. Thankfully we had an acrylic screen to protect us and we were all using safety glasses.
@@frederickcstacey.7520 I can imagine the silence in the room right after 😅 But this is amazing! It's crazy to me how throwing some stuff *in water* can make it explode
Thank you for explaining that it's actually a Coulomb explosion rather than a hydrogen explosion like most people think. If anyone needs Sodium metal, I sell it and have tons. I also have several videos on my channel showing everything below Rubidium in the alkali metals group exploding in water. We even blow up fish tanks with Sodium on a regular basis. Lmao! One thing he doesn't mention is that the majority of costs on Sodium orders goes towards packaging and shipping due to it having to be shipped a special way due to its dangerous reactivity. Any seller who ships it without at least 2-3 layers of protective layers of containment such as sealed bags and a lot of bubble wrap and a strong container that sits dead in the middle of the packaging. It must contain any and all leaks and render any spills harmless. Most sellers don't do most of this and refuse to ship properly, endangering customers and shipping service employees. I can guarantee you that no eBay seller besides me ships it correctly. Not going to write out names, but we all know who they are. That's the only reason they can be cheaper than me as we operate on paper thin margins after donating our profits and a LOT of chemicals and elements to help struggling science and chemistry based TH-cam channels make better and better videos.
I had a nice sealed glass ampule with a few grams of mercury that broke. So now I have it in a flask with a stopper. If you are able to reseal it in a glass ampule like he had his cesium in, I’d love to talk. Much safer I feel for display purposes than a flask where someone could just pull the stopper.
Curiously I have experience with Cesium under supercritical temperature and pressure in an autoclave with a sapphire rod window. The aim was to measure the reflectance of this metal under extreme circumstances. The optical measurement was through the sapphire window which usually is very resilient. However, cesium completely destroyed the sapphire window within seconds - super aggressive! So we still do not know the optical properties of cesium under supercritical conditions.
Do you mean you were using supercritical fluid Cs? At 1665 deg C and 93 atm? I don’t think so. But it was inadvisable to heat it under any pressure with an oxide-based window. A diamond window might survive molten Cs at say, supercritical CO2 temperatures.
Technically speaking the lighter the atom the more energy is released in that reaction, with lithium being the highest and cesium (discounting francium which you will never be able to test) being the lowest. However, more energy released does not equate to a more violent explosion since, as explained in the video, the reaction happens slowly and steadily instead of having everything going out at once.
i dont remember wich one but thunderfoot did a video a while ago talking about why cesuim reaction in the bathtub was fake. if i recall the other metal was sapose to do more for some reson. maby idk
Glad to see the coulombic explosion explanation is spreading. I would say the way Cesium reacts with the water comes from it having a low enough melting point to get an instant explosion in a room temperature experiment, unlike Sodium and Potassium which need to melt first (NaK shows the ability for instant explosion probably due to its liquid state at room temp). Being a liquid reduces the interference from surface oxides as they slough off, and also permits the surface to change as is necessary for the coulombic explosion. Seems like the gas layer created by sodium and potassium delays the explosion which is why you can see them melt before exploding.
They did this trick on Farscape. The episode was called Green Eyes Monster. They fed ice and cesium fuel to a budong (giant space whale) and then ignited it with a rocket launcher. The Budong threw up everything it had eaten including the ship and crew that it swallowed. And they all lived happily ever after until the second to the last episode that season.
What happens if you break a capsule of water in to Cesium? And i want to see what happens if the water and sodium are both liquid. First liquid sodium into water then water into sodium.
One correction. Francium is not more reactive. It's because of the relativistic effects. It is a heavy elements thereby having a lot of protons due to which a lot of centripetal accn is produced going a lot near to speed of light thereby it's mass increases and it gets closer to the nucleus and the electrons can't be ionised that easily
I’m really enjoying your videos. I’m not a scientist. When you’re telling about these metals, sodium, cesium, etc, can you please say how they are mined? Not sure mined is a correct word, but how do these get collected and what industrial applications do they have?
Through electrolysis, you can easily look up the Wikipedia pages of these elements which will list both lab and industrial processes of producing these highly reactive elements
So you ended up with water with cesium hydroxide dissolved in it. That's potentially caustic (though I guess fairly diluted). Cesium Hydroxide can etch glass. How did you dump the water?
If you melted the sodium/potassium before letting it out underwater would it be able to react in a similar instantaneous manner to cesium? My logic goes that pressure from the hydrogen gas would quickly rip the blob of sodium into tiny droplets with much higher surface area and thus force them to react quicker, as opposed to with a solid hunk, which only can react a little bit at a time at the very outside and has time to float to the top before doing anything drastic.
I recommend to verify these statements with a sodium-potassium alloy (NaK) it's fairly easy to make, it's liquid in room temperature, and to my knowledge it's the king of Alkaline Reactivity. Not saying it's wrong but as once Thunderf00t shown it's not the whole story. Just if you are about to do it - take very small sample and double on safety.
I thought that cesium is only a liquid at a bit above room temp, like if you hold it in your hand for a while. And that if it’s just left alone at room temp it remains a solid
Great suggestion, especially for an eye witness of what happened that day like myself but basically you only need 2 main ingredients to make any compound blow this way which they are corrupt government officials and stupidity all at once!
@@daizdamien1409 Sorry, I meant more like what causes the explosion on a chemical level/storage procedure for volatile chemicals/tannerite... There's lots of interesting stuff you could delve into around the topic...
@@vagabondcaleb8915 appreciated! And worth noting that after 4 years of that blast, people are still recovering and the intresting fact that only a fraction of the ammonium nitrate exploded while the other portion is just blown away. It was classified as the second most powerful explosion in history leaving an entire city damaged and affected on a different levels.
You need to approach this thermodynamically. Cesium is much easier to ionise than lithium, it has a lower enthalpy of fusion than lithium but the resulting ions only weakly interact with water because they are big and soft. With lithium, you get an ultra hard ion that basically refuses to exist without something to bond to, like the water around it. So it may react slower but the total energy per mol when reacting with water is much higher. Then factor in that any given mass of lithium packs way more atoms than the same mass of Cesium. This is why there's a "sweet spot" down the group. Lithium is the most energetic reaction with water but slowest kinetics. Cesium is the opposite. The best boom per gram is probably potassium.
Cesium is not converted into hydrogen; the hydrogen was already there, it simply transitions into its gaseous form. The reaction looks like this Cs (s) + H2O (l) > Cs+ (aq) + OH- (aq) + H2 (g) The cesium cation (positively charged ion) wants to bond with a hydroxide anion (negatively charged ion) in this reaction, but to get a hydroxide ion, surrounding water needs to be cleaved into hydroxide and hydrogen. The loose hydrogens bond with each other to form hydrogen gas, which evolves out of the solution. What remains in the water is cesium hydroxide. It looks like nothing because it's dissolved, but if you boiled away all of the water, you would be left with a small sample of cesium hydroxide salt.
Thunderf00t has a series on that. He was trying to figure out why it exploded, and he decided it's not hydrogen gas, but a columbic expansion. I'm hoping he turns it into a weapon.
The answer lies in Mr. Bernoulli's explanation of pressures in moving systems. The total pressure is the sum of a static pressure and a dynamic pressure. You can experience this very easily when you hold two sheets of paper at finger's distance and blow air from your lungs between them. You might expect the papers to move away from each other because you add air and pressure in the room between them. The opposite is true. You replace a part of the static pressure between them with dynamic pressure that has a specific direction, so the static pressure on the outside is greater and pushes the papers together. It's the working principle of injector pumps, carburetors and aircraft wings.
Cesium is not a liquid at rt, it melts at like 84F, solidly above room temp, similar to gallium. Secondly, francium is not pounced like frank, its fran-see-uhm.
@potatopobobot4231 of course, a room in the Mohave desert could be way hotter than a room in iceland.. but "room temperature" is generally accepted to be 70F, or 20C. The difference in room temperature is exactly the reason that "room temp" is a specific number. And the only elements that are liquids at RT are mercury and bromine.
God bless you for opening Caesium underwater! But the most reactive alkali metal in the periodic table? True enough but what about all those alkali metals not in the periodic table? Anyway, your choice of experiments is brilliant as usual.
In Australia a small capsule of Cesium 137 was lost in transport, it made headlines for days as they searched hundreds of kms or road on foot to find it. Crazy how the same element can be so dangerously radioactive
I'm from Goiania, Brazil, where the biggest incident with Cesium 137 happend. People found a glowing blue rock and started walking around with it, turning their food blue and so on...
@Mr DejavuKing Cs-137 is a radioactive isotope of Caesium, exclusively produced in nuclear reactors. Natural Caesium is entirely Cs-133, which is stable.
@mrdejavuking7395you are the one who will probably end in the darwin awards for your dumbness, the radioactive one is an isotope, they are not the same OF COURSE, you don't need to be a chemistry genious to see this
Thankfully no as the cesium he had in this video is basically pure cesium-133 which is stable i.e. non-radioactive rather than the radioactive cesium-137 (cesium with 4 too many neutrons) that you're thinking of which is a byproduct of nuclear fission of uranium.
last time I checked where I live in South Australia it's completely legal to buy small quantities of sodium as long as no more than a single 100 gram container of sodium is bought at one time it's completely legal to buy sodium in South Australia but the catch is that for sodium to be imported into South Australia a tax has to be paid to import it
Cesium is the most reactive alkaline metal. It happens that francium's nucleus being bigger than cesium's is just enough that its attraction on its electronic cloud reduces its reactivity below that of cesium.
Most of the explosion is a coulomb reaction. The electrons between the metal and the water violently repel each other even before any hydrogen gas has been created. (Nature Chemistry "Coulomb explosion during the early stages of the reaction of alkali metals with water" Published 26 Jan 2015. Check out the article. It's really interesting and the high speed video is amazing.
Did you know the Francium is actually less reactive then Caesium despite being an the list lower down, the final electron of Francium is held tighter than normal therefore is not more reactive but slightly less!
Cesium is heavier than sodium and sinks to the bottom, the few examples where cesium is thrown into a glass pneumatic trough (big glass bowl), the bowl always shatters.
0:07 well, it depends of the room temperature. If you consider 20°C, which is generally what people mean by "room temperature", then no, it's not liquid at room temperature.
The cesium explosion is not underwhelming if you use a large enough chunk of it. There are many videos out there of serially exploding all alkali metals with water, but I remember seeing one in which everything went as expected until rubidium (which was VERY loud, fiery, and impressive!), but cesium really stole the show by causing such a violent explosion that the large glass vessel was completely shattered in maybe a tenth of a second!
My biggest issue with cesium is how these reality science TV shows pretend to show off a cesium explosion but instead us a plastic explosive instead. Why pretend to be be educational when you are showing off fake demonstrations and are passing it off as real.
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Two earthquakes with a magnitude of 7.6 and 7.8 occurred in Turkey. damage and deaths are too many tens of thousands of injured and thousands of deaths . @TheActionLab please help Turkey. The state is very inadequate in this regard.
Lol never thought I would see Manscaped as a sponsor here 😂
What happens if you break a capsule of water in to Cesium?
And i want to see what happens if the water and sodium are both liquid.
First liquid sodium into water then water into sodium.
u need to make a bullet with it (frozen), and then shoot the water, air gun obviously )))
You have a good enough beard and ponytail to advertise a manscaping product, but you need to figure out a way to collect audio without having that lav mic pull your t-shirt halfway down your chest. That sloppy neckline sabotages your video.
After we observed the sodium reaction in high school, I always wanted to get my hands on some cesium, learning that it is even more reactive. So while the result was a tad underwhelming, this satisfies something I’ve wanted to see for 20 years. Thank you!!
just because caesium is more reactive than sodium ( unless u heat it to around 600 c), it doesnt mean the reaction is more energetic, thats why its pretty underwhelming. cody’s lab has explained this in the video where he made the 1mil play button out of caesium
also im a hobbyist not a chemist, pls do correct me if im wrong
@@tomasbalnionis1399 Not correcting you but, I have heard that Caesium does indeed have a more violent reaction if you were to liquify it enough/heat it up, not sure where I got this from, but I hope someone tries it(ofc with a safe distance)
But after seeing this I'm not entirely sure anymore.
Not quite as exciting as hoped for, but still quite a fascinating reaction.
You literally have over a decade of clips on TH-cam.
If you want something more along the lines of what you expected, look up “caesium fluorine reaction”
So, Caesium is more reactive than sodium, but sodium is "just right"
Kinda like ur mom when u don't clean ur room
Sodium and potassium.
If one reaction is too fast it doesn't make as an effective explosion.
😂
Goldy locks
At US$80.00 a gram I also want nothing to do with it.
Goldilocks tried the Lithium reaction, but it was too slow.
Next she tried the Cesium reaction, but it was too fast!
Finally, she tried the Sodium reaction, and it was just right.
Pick it up.
Goldilocks tried to sleep in the Copper bed, but it was too cold.
Next she tried to sleep in the Plutonium bed, but it was too radioactive.
The end.
@@redryder3721 dam bro
@@redryder3721 im not even gonna try to save her
@@redryder3721
Now that the cesium hydroxide is in your water tank, would it be possible to get the cesium metal back?
Likely possible, with a technique like electrolysis
Definitely possible
What do you think this is, Cody's Lab???
Recovering the cesium is possible and worthwhile, and required by law in most places since one is not allowed to dispose of cesium down the drain. Since almost all cesium salts are soluble, it's probably easiest to evaporate off the water (any combination of heat and vacuum) and collect the salt that remains. It might be best to start by neutralizing by bubbling in plenty of carbon dioxide, and then collect the dry carbonate salt. A less convenient way to neutralize is with a mineral acid and collect the salt (chloride, sulfate, nitrate, phosphate etc depending on the acid used). The advantage of using CO2 is that one does not need to use an exact quantity of it since it will leave no residue when evaporated. Once the salt is collected, it can be sold or passed to specialist labs that extract the metal, which, in the case of cesium, is almost impossible in a conventional lab without special equipment
@@nameredacted1242 Nile Red
Please do a collaboration with the slow-mo guys with this underwater reaction. That would be so cool to see in super super slow motion.
There is a video like that somewhere, but I don't remember wich channel.
It was very spectaculair. As soon as the metal touched the water, it formed many 'jets of electrons'. They wanted to leave the metal so bad that it ripped the sample apart in a microsecond or so. It finally made me understand how a large sample of metal could explode so fast, like before all the atoms had time to touch water molecules.
It really was one of the most spectacular chemistry videos I've ever seen!
If I van find the video, I will update this comment for you.
You wanna fly to London with a vile of Cesium?
@@DrDeuteron lol I'm sure they have people to find it there 🤣🤪🤘
Pause the video, top right corner is a cog symbol, when you press that there'll be a menu, select playback speed and you can slow the video to 0.25%.
Minor correction, Cesium is the most reactive, Francium is less reactive due to relativistic effects. 0:16
Nerd 🤓🤓
What are the relativistic effects you mention?
@@deusexaethera The very strong positive charge of heavy nuclei (Francium has 87 protons) results in electrons being pulled very close to the nucleus as compared to lighter elements (hence more Coulombic attractive force). Another effect of electrons being pulled in that closely results in the electrons moving at speeds close to the speed of light and becoming heavier than expected due to relativistic mass expansion. The combination of more Coulombic attraction and heavier electrons means the outer shell electron of Francium has a higher ionization energy than expected.
@@deusexaetherabecause francium is a heavier element, it’s more positively charged for its size compared to elements like cesium or potassium. So it holds its electrons tighter which means more velocity, which at those speeds on those scales basically creates mass, or at least pseudo-mass. This makes it harder for it to be attracted to a different nucleus. Cesium is actually right up at the limit before this effect takes place
@@cyntrixta1884why the hell are you here on this channel then, nerd?
We live in a universe where anything can happen, including but not limited to Manscape purchasing Cesium at a higher cost than gold per gram for this man.
I would like to say that it is partially because larger amounts of Sodium and Potassium can typically be used that they sometimes get bigger reactions. Cesium is expensive, and using more than a small amount Cesium is often very difficult.
Come on bro, this isn't the first time you put a picture of a pool on the thumbnail and then use a bucket of water in the video
I was going to watch the whole video but i saw the comment 😐
barely 2 litres 😂
He was going to do it but his wife was against it.
It would be very stupid to do this in uncontrolled conditions. Cesium is extremely dangerous.
you clicked and commented, proof that the thumbnail worked perfectly
Action Lab - " I still prefer Sodium for some Good Explosions"
FBI - 👀
also gonna pound the long rod
never really "got" chemestry when I was in school, but through your videos explaining the little picture it's making a lot more sense.... wouldve been really helpful about 45 years earlier...cheers
One of the greatest and most memorable experiences of my life was given to me by an educator. I'll be vague as he isn't dead yet. He was very creative in his methods. He introduced a handful of us to the reactivity of sodium by chucking a large block of it into a small body of water. It exploded quite a few times. The chunk didn't come apart for a bit and the explosions were enough to heave it out of the water while it was still one piece. I chose "heave" on purpose as it was more of a riding the wave scenario, but it would leave the surface of the water and travel a bit. They would put him in jail today, but I retained everything he ever tried to teach me.
My high school chemistry teacher (who was highly overqualified for his job, having a doctorate, many published scholarly papers, etc.) told a story about his younger days in Amsterdam (he was dutch with an accent that went perfectly with the "chemistry professor" gig) when his lab group were moving from one building to another, and they had a big hunk of potassium that they just dropped in a canal. It sank to the bottom and they just sat there and watched because it wasn't reacting, wasn't reacting, wasn't reacting... and then as a gondola approached it, went off like a depth charge with flame and smoke and all that good stuff. Of course, the gondolier had no idea what was going on, and crashed the gondola into the side of the canal trying to avoid the explosion. (But of course, it was going slowly, leisurely, so nobody was hurt.)
Someone, get this man a new cesium sample; he deserves it.
0:16 I feel it’s worth noting that Francium is actually less reactive than Cesium due to relativistic effects on the electrons found in sufficiently large atoms
The more you know... thx
@@u1zha No problem c:
0:15 fancium is not pronounced frank-eum, its pronounced france-eum. it was named after the country france.
Maybe it’s named after Francia, the Kingdom of the Frankish people and traditional name of the region where modern France is located?
What happens when you put Cesium in a pool, letting the fragments hit the water again?
I imagine it'd be pretty crackly
The epa shows up 😂
Fireworks party
There is a video on chucking sodium into a lake which is so funny because the ejected fragments falls back into the water again
I was going to say the same thing!
At that price , the caesium reaction isn't so much disappointing as heartbreaking.
Pronounced "Fran-see-um", I believe?
Because France and not Frank ye. :D
And jojoba is pronounced with a Spanish _j_
And also less reactive than cesium.
Who cares 😂
@@daltonsoutherland8836Me !
francium (if you could get some) actually is less reactive than cesium due to quantum effects. It's been a couple years since if've taken quantum chemistry, so i'm not exactly sure why (we didn't study that specifically) but super-heavey elements are less likely to exhibit the same trends as the stable ones in their periodic group. for example Oganesson is predicted to be a solid even the it is in the group of "noble gas"
I heard that "frankium" (as James calls it lol 😂😂) would actually be less reactive than cesium due to relativistic effects.
lol I was screaming it's france-ium!
Francium, from the famous European country Frank.
@@Axman6 No, from the country which was once part of the Frankish Empire and is still called Frankreich in German (and similar in related languages).
In Classical Latin the c would be pronounced "k", but in Late Latin it would be "ch", as in modern Italian.
When I first learned about cesium, I thought, what would happen if you hid cesium inside a bar of soap? Could that be a lethal "prank"?
When I saw the cesium reaction my first thought was "This is a job for the slow-mo guys!" Nice vid, subbed
0:17 incorrect. The half life isn’t the reason you can have only a few atoms at a time, it’s because there are ONLY a few atoms at a time to be had (due to its extreme atomic instability and the fact that it’s not on many decay chains). There are ways to produce radioactive compounds that have half lives of a few minutes, seconds, microseconds, etc.
Cesium is even more reactive than francium. Due to the size of the francium atom, relativistic effects already arise in the electron shell there, which reduce reactivity.
Not many people know that.
You should qualify it by saying "Cesium would be more reactive than Francium... " as Francium can never be collected in enough quantities to study its chemical nature, as any visible samples would instantly vaporize because of its high radioactivity and low half-life. What you quote is theoretical prediction.
0:17 I think this part was phrased very poorly. The reason there are no weighable samples of francium is not the 22 minute half life of 223Fr. This is a fair amount of time and would easily allow us to study it in detail. The problem is that there are no efficient decay chains to produce it, since during the alpha decay of 227Ac only 1,38% of the decay products are 223Fr. Together with the long half life of 227Ac (21,7 years) no meaningful amounts of 223Fr can be seperated. Oxygen15 for example has only a 2 minute half life but has medical uses and can be generated in a cyclotron.
This is an excellent presentation.
Cesium is NOT liquid at room temperature, its melting point is at 28 degrees celsius and 0:06 is plain wrong. There are only 2 elements which are liquid at room temperature: mercury and bromine.
I was sad for this nice caesium vial, but I read here you may be able to get some of it back. Looking forward to a followup.
cesium is actually a solid under ambient conditions, so unless you heated it with your hands to melt it (ca 28 °C), your sample very likely contained some other (earth) alkali metals as impurities stemming from the synthesis of the cesium
For those of us who aren't too well versed in such stuff: How is your Caesium capsule, which you handle with your bare hands, different from the Caesium (137) capsule that threw Australia in a panic?
Cesium-137 is an isotope, whereas the cesium he is handling is the normal element.
An isotope is an alteration of an element with the same atomic number (which is the number of protons in the nucleus) but a different atomic mass (caused by a different number of neutrons).
Cesium-137 is an isotope with an atomic mass of 137 compared to the normal 135 of non-altered cesium.
Because of this difference, some isotopes are radioactive (wildly so in the case of cesium-137).
@@MatteoCampinoti94 the only thing I would add to help connect dots for the OP is that the smaller number of neutrons in the highly-radioactive cesium 135 means there's an imbalance between the forces keeping the nucleus together and the interior repulsive forces of the protons pushing against each other. That's what makes it unstable and so happy to split apart in radioactive decay.
I work in the Oil and Gas industry; when drilling extremely high-pressure formations, we use Cesium Formate as the drilling mud to counter the pressures. My question is, how is the Cesium stabilized? An interesting fact about the Cesium Formate is that you can't buy it; you must rent it. For offshore jobs, a boat pulls alongside and delivers it to the rig. The ship stays until the job is done, and you must pump it back to the ship. As you can imagine, it is a costly operation. Rough numbers - Gulf of Mexico Sea Water is about 9 pounds per gallon. Cesium Formate is in the 20 pounds per gallon range.
Cesium melts at 28.5 Celsius, which means it is solid at room temperature. It will melt with the warmth of one's hand as he demonstrated. There are only two elements that are liquid at room temperature (Hg and Br)
Maybe his room is 30 degree. But google says "Different institutes define different standard room temperatures but the worldwide accepted range of room temperature is taken from 20∘C to 25∘C". So ye...
@@d4slaimless thank you. Second comment I saw claiming room temperature to be above 25. That is a pretty warm room by my standards. I dunno the conversion but 68F is ”room temperature” to me, and that is definitely not 29C.
@@XiaolinDraconis there is quite a number of different standard conditions in different areas of science|industry. IUPAC suggests it is temperature of 273.15 K (0°C, 32°F) and an absolute pressure of 100 kPa. Accroding to NIST it is temperature of 20°C (293.15 K, 68°F) and an absolute pressure of 1 atm (101.325 kPa)
However there is also a term in thermodynamics "standard state". Standard state does not specify any temperature, but it is usually refer to 298.15 K (25 °C; 77 °F).
I think 25°C (77°F) is the most applicable number since phase transition is a thermodynamic process. Of course one might argue some different reasons.
Anyway be it 0°C, or 20°C or even 25°C Cesium is solid at those temperatures.
that's weird.
why didn't that thing created a bigger explosion?
in the tv show brainiac science abuse they threw it in a bathtub full of water and the explosion was like a greenade.
Who needs caesium when my sodium exploded when it was submerged in water.
For those who want the full story:
When I was halfway through secondary school we did a demo of the alkali metals. At first it was going well, the Lithium was uneventful. Then we put the sodium in, initially for 2 seconds it reacted nominally with the water then it stopped, it just stopped. It stopped reacting almost completely for just long enough for our brains to process what was going on.
Then Boom, it just exploded, leaving smoke trails as tiny fragments were sent spiralling into the air. Thankfully we had an acrylic screen to protect us and we were all using safety glasses.
I must agree with the presenter, sodium is good fun.
@@frederickcstacey.7520 I can imagine the silence in the room right after 😅
But this is amazing! It's crazy to me how throwing some stuff *in water* can make it explode
Thank you for explaining that it's actually a Coulomb explosion rather than a hydrogen explosion like most people think. If anyone needs Sodium metal, I sell it and have tons. I also have several videos on my channel showing everything below Rubidium in the alkali metals group exploding in water. We even blow up fish tanks with Sodium on a regular basis. Lmao! One thing he doesn't mention is that the majority of costs on Sodium orders goes towards packaging and shipping due to it having to be shipped a special way due to its dangerous reactivity. Any seller who ships it without at least 2-3 layers of protective layers of containment such as sealed bags and a lot of bubble wrap and a strong container that sits dead in the middle of the packaging. It must contain any and all leaks and render any spills harmless. Most sellers don't do most of this and refuse to ship properly, endangering customers and shipping service employees. I can guarantee you that no eBay seller besides me ships it correctly. Not going to write out names, but we all know who they are. That's the only reason they can be cheaper than me as we operate on paper thin margins after donating our profits and a LOT of chemicals and elements to help struggling science and chemistry based TH-cam channels make better and better videos.
I had a nice sealed glass ampule with a few grams of mercury that broke. So now I have it in a flask with a stopper. If you are able to reseal it in a glass ampule like he had his cesium in, I’d love to talk. Much safer I feel for display purposes than a flask where someone could just pull the stopper.
Curiously I have experience with Cesium under supercritical temperature and pressure in an autoclave with a sapphire rod window. The aim was to measure the reflectance of this metal under extreme circumstances. The optical measurement was through the sapphire window which usually is very resilient. However, cesium completely destroyed the sapphire window within seconds - super aggressive! So we still do not know the optical properties of cesium under supercritical conditions.
That's an awesome story! Pretty terrifying too. Never underestimate the power of a strong reducing agent.
Do you mean you were using supercritical fluid Cs? At 1665 deg C and 93 atm? I don’t think so. But it was inadvisable to heat it under any pressure with an oxide-based window. A diamond window might survive molten Cs at say, supercritical CO2 temperatures.
I didn't know that was why alkali metals got more reactive in order! Very cool.
If you put a francium in water you would create a horrible nuclear explosion
The thumbnail literally made me shiver, everyone who studied high school chemistry knows how dangerous it is
I love the chuckle when the sodium explodes at the surface
Technically speaking the lighter the atom the more energy is released in that reaction, with lithium being the highest and cesium (discounting francium which you will never be able to test) being the lowest. However, more energy released does not equate to a more violent explosion since, as explained in the video, the reaction happens slowly and steadily instead of having everything going out at once.
Yup. He said all that....
It would be so cool to see Action Lab collab with The Slow Mo Guys and see some of these reactions in super slow mo
i dont remember wich one but thunderfoot did a video a while ago talking about why cesuim reaction in the bathtub was fake. if i recall the other metal was sapose to do more for some reson. maby idk
Glad to see the coulombic explosion explanation is spreading.
I would say the way Cesium reacts with the water comes from it having a low enough melting point to get an instant explosion in a room temperature experiment, unlike Sodium and Potassium which need to melt first (NaK shows the ability for instant explosion probably due to its liquid state at room temp).
Being a liquid reduces the interference from surface oxides as they slough off, and also permits the surface to change as is necessary for the coulombic explosion. Seems like the gas layer created by sodium and potassium delays the explosion which is why you can see them melt before exploding.
Cesium: “Sorry, this time it is underwater experiment “
Vacuum chamber: “ Hold my beer….”
They did this trick on Farscape. The episode was called Green Eyes Monster. They fed ice and cesium fuel to a budong (giant space whale) and then ignited it with a rocket launcher. The Budong threw up everything it had eaten including the ship and crew that it swallowed. And they all lived happily ever after until the second to the last episode that season.
I have always wondered how powdered Sodium would react. The surface area of a powdered sample should be much greater and increase the reactivity.
It would probably simply burn in air. Too much surface area and humidity in the air.
Ceasium IS NOT A LIQUID AT ROOM TEMPERATURE. It has a slightly higher melting point,it will melt in your palm....
You wish
What happens if you break a capsule of water in to Cesium?
And i want to see what happens if the water and sodium are both liquid.
First liquid sodium into water then water into sodium.
It will create a hole in the fabric of time and space
One correction. Francium is not more reactive. It's because of the relativistic effects. It is a heavy elements thereby having a lot of protons due to which a lot of centripetal accn is produced going a lot near to speed of light thereby it's mass increases and it gets closer to the nucleus and the electrons can't be ionised that easily
I’m really enjoying your videos. I’m not a scientist. When you’re telling about these metals, sodium, cesium, etc, can you please say how they are mined? Not sure mined is a correct word, but how do these get collected and what industrial applications do they have?
Through electrolysis, you can easily look up the Wikipedia pages of these elements which will list both lab and industrial processes of producing these highly reactive elements
So you ended up with water with cesium hydroxide dissolved in it. That's potentially caustic (though I guess fairly diluted). Cesium Hydroxide can etch glass. How did you dump the water?
I really want to see potassium explode underwater as you said potassium is just right for an explosion so it would be pretty cool.
Love how you start off by telling us what Cesium is. When I clicked this video I was thinking 'wtf is Cesium..?'
Now I know!
If you melted the sodium/potassium before letting it out underwater would it be able to react in a similar instantaneous manner to cesium? My logic goes that pressure from the hydrogen gas would quickly rip the blob of sodium into tiny droplets with much higher surface area and thus force them to react quicker, as opposed to with a solid hunk, which only can react a little bit at a time at the very outside and has time to float to the top before doing anything drastic.
also heating the water would help as heat is a catalyst for most chemical reactions
Or making liquid alloy - NaK! I always wanted to pour it into the water :-)
Or mixing NaK and Cesium into a water bucket to open the gates of hell on your backyard.
I recommend to verify these statements with a sodium-potassium alloy (NaK) it's fairly easy to make, it's liquid in room temperature, and to my knowledge it's the king of Alkaline Reactivity. Not saying it's wrong but as once Thunderf00t shown it's not the whole story. Just if you are about to do it - take very small sample and double on safety.
Great job! Can you also do opening potassium metal vial underwater? Thanks.
I also want to see how does potassium metal reacts with water in vacuum or inert atmosphere or air/oxygen free atmosphere.
Can you do opening a hydrogen bomb underwater?
I can’t wait for a crossover episode with plutonic quarks.
One of the best channels ever. Keeps my passion for science alive.
Gbvv
Tgg
GG
Gg
gg
Wow! It is surprisingly underwhelming! However afterwards you can piece together why.
Is it just me or have your experiments been way more intense lately? 😂 Not complaining haha
I thought that cesium is only a liquid at a bit above room temp, like if you hold it in your hand for a while. And that if it’s just left alone at room temp it remains a solid
Francium is actually less reactive than cesium…
Thanks for sharing your knowledge in such a fun and informative way! I appreciate your hard work putting all of these videos together.
Can you talk about the Beirut ammonium nitrate explosion? I just was looking at videos, and I was really curious about how this happened.
ammonium nitrate which is a fertilizer went kaboom
Great suggestion, especially for an eye witness of what happened that day like myself but basically you only need 2 main ingredients to make any compound blow this way which they are corrupt government officials and stupidity all at once!
@@daizdamien1409 Sorry, I meant more like what causes the explosion on a chemical level/storage procedure for volatile chemicals/tannerite... There's lots of interesting stuff you could delve into around the topic...
@@waelfadlallah8939 Wow! Sounds/looks terrifying! But also very interesting! But also very sad!
@@vagabondcaleb8915 appreciated! And worth noting that after 4 years of that blast, people are still recovering and the intresting fact that only a fraction of the ammonium nitrate exploded while the other portion is just blown away. It was classified as the second most powerful explosion in history leaving an entire city damaged and affected on a different levels.
You need to approach this thermodynamically. Cesium is much easier to ionise than lithium, it has a lower enthalpy of fusion than lithium but the resulting ions only weakly interact with water because they are big and soft. With lithium, you get an ultra hard ion that basically refuses to exist without something to bond to, like the water around it. So it may react slower but the total energy per mol when reacting with water is much higher. Then factor in that any given mass of lithium packs way more atoms than the same mass of Cesium. This is why there's a "sweet spot" down the group. Lithium is the most energetic reaction with water but slowest kinetics. Cesium is the opposite. The best boom per gram is probably potassium.
Thanks for uploading!👍❤️❤️
Bob: imma eat banana
Me: NOOO!!!
Bob: explodes*
"What's your favourite metal?" is a question I never thought that could be asked.
Heavy is my favourite metal 🤘
I like that 90’s funk metal vibe myself
Iron very cool
@@Max_Jacoby I prefer death, black and prog
I was expecting it to blow up a spaceship or something like that.
Action lab is always the first 🥇
Permit a stupid question. Was the cesium entirely converted to hydrogen? If not, what remained in the water filled container?
Cesium is not converted into hydrogen; the hydrogen was already there, it simply transitions into its gaseous form. The reaction looks like this
Cs (s) + H2O (l) > Cs+ (aq) + OH- (aq) + H2 (g)
The cesium cation (positively charged ion) wants to bond with a hydroxide anion (negatively charged ion) in this reaction, but to get a hydroxide ion, surrounding water needs to be cleaved into hydroxide and hydrogen. The loose hydrogens bond with each other to form hydrogen gas, which evolves out of the solution.
What remains in the water is cesium hydroxide. It looks like nothing because it's dissolved, but if you boiled away all of the water, you would be left with a small sample of cesium hydroxide salt.
Can you please try this with NaK (Soduim + Potassium). It is also a liquid at room temperature. And highly reactive
Thunderf00t has a series on that. He was trying to figure out why it exploded, and he decided it's not hydrogen gas, but a columbic expansion. I'm hoping he turns it into a weapon.
I lost your channel for so long glad i found it again. I love watching these with my daughter
Can you do a video explaining the suction effect I feel when being passed by a faster moving vehicle?
The answer lies in Mr. Bernoulli's explanation of pressures in moving systems. The total pressure is the sum of a static pressure and a dynamic pressure. You can experience this very easily when you hold two sheets of paper at finger's distance and blow air from your lungs between them. You might expect the papers to move away from each other because you add air and pressure in the room between them. The opposite is true. You replace a part of the static pressure between them with dynamic pressure that has a specific direction, so the static pressure on the outside is greater and pushes the papers together. It's the working principle of injector pumps, carburetors and aircraft wings.
Caesium is not liquid at ''standard'' room temperature (21-22 C), but it's melting point is quite low (28,5 C), so body heat can easily melt it.
Cesium is not a liquid at rt, it melts at like 84F, solidly above room temp, similar to gallium. Secondly, francium is not pounced like frank, its fran-see-uhm.
Ive been in many rooms that were 84f. Including joes room...
@potatopobobot4231 of course, a room in the Mohave desert could be way hotter than a room in iceland.. but "room temperature" is generally accepted to be 70F, or 20C. The difference in room temperature is exactly the reason that "room temp" is a specific number. And the only elements that are liquids at RT are mercury and bromine.
"i prefer sodium for some good explosions" -bro
Actionlab & veritasium collab will be the best collab
God bless you for opening Caesium underwater! But the most reactive alkali metal in the periodic table? True enough but what about all those alkali metals not in the periodic table? Anyway, your choice of experiments is brilliant as usual.
In Australia a small capsule of Cesium 137 was lost in transport, it made headlines for days as they searched hundreds of kms or road on foot to find it. Crazy how the same element can be so dangerously radioactive
I'm from Goiania, Brazil, where the biggest incident with Cesium 137 happend. People found a glowing blue rock and started walking around with it, turning their food blue and so on...
@Mr DejavuKing Cs-137 is a radioactive isotope of Caesium, exclusively produced in nuclear reactors. Natural Caesium is entirely Cs-133, which is stable.
@Mr DejavuKing not all cesium is radioactive. He was using a stable isotope. No gamma radiation.
@mrdejavuking7395you are the one who will probably end in the darwin awards for your dumbness, the radioactive one is an isotope, they are not the same OF COURSE, you don't need to be a chemistry genious to see this
is it radioactive ? Why could you hold that by bare hand ?
Thankfully no as the cesium he had in this video is basically pure cesium-133 which is stable i.e. non-radioactive rather than the radioactive cesium-137 (cesium with 4 too many neutrons) that you're thinking of which is a byproduct of nuclear fission of uranium.
When are you stocking your experiment kits again?
Cant believed manscaped actually sponsored the action lab
last time I checked where I live in South Australia it's completely legal to buy small quantities of sodium as long as no more than a single 100 gram container of sodium is bought at one time it's completely legal to buy sodium in South Australia but the catch is that for sodium to be imported into South Australia a tax has to be paid to import it
I learned of this element in high school and it is similar in structure to the element Sneezyium that causes sneezing.
Cesium is the most reactive alkaline metal. It happens that francium's nucleus being bigger than cesium's is just enough that its attraction on its electronic cloud reduces its reactivity below that of cesium.
Most of the explosion is a coulomb reaction. The electrons between the metal and the water violently repel each other even before any hydrogen gas has been created. (Nature Chemistry "Coulomb explosion during the early stages of the reaction of alkali metals with water" Published 26 Jan 2015. Check out the article. It's really interesting and the high speed video is amazing.
Did you know the Francium is actually less reactive then Caesium despite being an the list lower down, the final electron of Francium is held tighter than normal therefore is not more reactive but slightly less!
Would have loved to see what happens if you "freeze" it. Leave it in your fridge at 4 degrees c for 30 mins
I clicked on the video thinking it was backyard scientist 😅
"More expensive than gold"
- Proceeds to obliterate it in a near-instant chemical reaction.
Cesium is heavier than sodium and sinks to the bottom, the few examples where cesium is thrown into a glass pneumatic trough (big glass bowl), the bowl always shatters.
The vacuum chamber should get its own channel. Most of the Action Lab madness happens there, even underwater explosions.
0:07 well, it depends of the room temperature. If you consider 20°C, which is generally what people mean by "room temperature", then no, it's not liquid at room temperature.
The cesium explosion is not underwhelming if you use a large enough chunk of it. There are many videos out there of serially exploding all alkali metals with water, but I remember seeing one in which everything went as expected until rubidium (which was VERY loud, fiery, and impressive!), but cesium really stole the show by causing such a violent explosion that the large glass vessel was completely shattered in maybe a tenth of a second!
Him: "science science science" me: ha ha shiny go boom
I learned more about Manscaped than about cesium from this video.
My biggest issue with cesium is how these reality science TV shows pretend to show off a cesium explosion but instead us a plastic explosive instead. Why pretend to be be educational when you are showing off fake demonstrations and are passing it off as real.