This chemistry demonstration video shows the reactions of group 1 metals in air, in chlorine and in water. Find out about the elements at: www.rsc.org/periodic-table.
how can these scientist be so sensible, if that was me i would burn a whole chunk of pottasium and dont get me started about cesium... that would be my next best friend.
Drying with paper towel doesn't seem any safer than using Hexane. If you were to wipe the potassium with the paper too hard, for example, you could cause the paper to oxidize the metal (causing a fire). This wiping could also induce a reaction between surface potassium superoxide and potassium metal, depending on how corroded the potassium is (again, causing a fire).
@THENIGHTELFKALDOREI yeah, but no one can even work with francium because it is one of the most rarest elements, and no one has ever made a synthetic version if it.
A suggestion - when passing around the petri dish(s) to show how light they are, also send around a "control" (empty dish) so one can see they almost weigh the same in one's hand. (add equal tape amount to the control as well if you tape the others).
group 1 metals have 1 valence electron, which makes them extremely reactive. it could react with almost anything, but oil isn't reactive with group 1 elements.
Also, francium is almost never with it's outer electron. It loses it so easily, it never actually has it, except for the instant of a nuclear explosion or something that produces francium
Fist off Francium is Highly Radioactive-the longest isotope of Francium is Fr-223 with a half life of 22 minutes. Second, because of its high radioactivity, Francium doesn't last that long (obviously...) and can only be worked with if the chemist, physicist, etc. has a Level A Hazmat suit or a CBRN suit on to protect from the radiation
Francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and decays. As little as 20-30 g (one ounce) exists at any given time throughout the Earth's crust; the other isotopes are entirely synthetic. The largest amount produced in the laboratory was a cluster of more than 300,000 atoms. That's why no francium.
stops it oxidizing or reacting with air, like she says in the video, when the shiny part becomes dull, that's the metal oxidizing, NOW LISTEN IN CHEMISTRY CLASS
@gregod10 it IS more reactive than cesium. It has only been tested once and it exploded in Area 51. There was a little test room and one man was killed.
1. This is for school purposes, they are not allowed to test for anything more reactive than potassium due to the violence of the reaction. 2. Francium is radioactive and next to impossible to obtain. 3. Yep haha
francium is extremely radioactive, it has a half-life of 8hours, and because of this cannot be produced stabily for any period of time as it almost completely disappears after a few days no matter how you store it. so in total, Francium is ludicrously radioactive, ridiculously radioactive and has a shorter shelf-life than dodgy vegetables, so not probably the best example to use
It would have been cool But dont think anybody on earth can get enough Fr to react out of the 40 gramms that are constantly reacting and re-creating ( if I can say so ) simulteanously on all the earth's surface xD.
In fact they are reactive because of their low electronegativities AND low ionization energies. Number of electron is not critical here. Fluorine or chlorine has seven electrons and it's also extremely reactive - and in this case is is caused by their high electronegativities AND high electron affinities. These two factors must occur both. There are some element which are characterized by only one of them, and they are not so reactive.
I feel like eating the metal piece cus its so soft but it will explode in my stomach
Residue: death Oxide
''And as you can see here I have three full bricks of Li, Na and K now let's dump them all into water like so...''
*Room bursts into flames*
AHAHAHAHAHAHAHAHAH!!!!
240p... we meet again
chris cautillo
why are the metals easy to cut
because they are soft.
Hello darkness my old friend
I loved the pop sound of H2
I felt a strange craving for steak when she cut the lithium.
14:33 the best part
7:58 "We need to cut a piece off..." K
Unlike school, here you can skip to the interesting parts!!
Made my day for the exam. I mean who'll read the theory? I have stuff in front of me!
great teaching. thank you.
now that's the BEST scientific observation eva (thumbs up)
this video has increased my love for chemistry...😘😘😍😍💜💜
Yeah its right
These videos are sooo helpful :D
i just watched this vid again and again to see the satisfying cutting of the metals
Found this while studying alkali metals in science class.Epic. Nuff said.
My school is too poor, theyll just show this video instead
Just had a phone call from ELTON JOHN.......says he wants his glasses back!!!!
It's super rare. As little as 20-30 g (one ounce) exists at any given time throughout the Earth's crust
AWSOME!!!!
how can these scientist be so sensible, if that was me i would burn a whole chunk of pottasium and dont get me started about cesium... that would be my next best friend.
helped a lot thanks👍👍☺☺☺
good video it teaches me well
Drying with paper towel doesn't seem any safer than using Hexane. If you were to wipe the potassium with the paper too hard, for example, you could cause the paper to oxidize the metal (causing a fire). This wiping could also induce a reaction between surface potassium superoxide and potassium metal, depending on how corroded the potassium is (again, causing a fire).
Awesome
please re-upload video in HD Quality.
Hi pankaj prasar, I'm glad you like this video. Unfortunately we don't have a higher res version to upload, but I hope it's useful nontheless
@apard7 no but francium is.
I thought that the brick was all lithium. I was like "must put whole thing into water!"
thank you lesson I'm somaliland
@THENIGHTELFKALDOREI yeah, but no one can even work with francium because it is one of the most rarest elements, and no one has ever made a synthetic version if it.
Francium is an extremely rare meterial, also its only held in controlled environments, due to its volatile nature.
what indicators are used?
Exact same thought. I was about to write that as well lol
Very helpful for science students.
A suggestion - when passing around the petri dish(s) to show how light they are, also send around a "control" (empty dish) so one can see they almost weigh the same in one's hand. (add equal tape amount to the control as well if you tape the others).
group 1 metals have 1 valence electron, which makes them extremely reactive.
it could react with almost anything, but oil isn't reactive with group 1 elements.
where do you get your metals?
Is it sodium oxide or peroxide ?
Also, francium is almost never with it's outer electron. It loses it so easily, it never actually has it, except for the instant of a nuclear explosion or something that produces francium
Fist off Francium is Highly Radioactive-the longest isotope of Francium is Fr-223 with a half life of 22 minutes. Second, because of its high radioactivity, Francium doesn't last that long (obviously...) and can only be worked with if the chemist, physicist, etc. has a Level A Hazmat suit or a CBRN suit on to protect from the radiation
why r u using that circuit tester
Francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and decays. As little as 20-30 g (one ounce) exists at any given time throughout the Earth's crust; the other isotopes are entirely synthetic. The largest amount produced in the laboratory was a cluster of more than 300,000 atoms. That's why no francium.
thanks for taking me back to my chemistry classes. i love chemistry
no, only cesium created after a uranium fission reaction is radio active
so they wont react with the moisture in the air
why are the metals easy to cut
Since they have larger atomic size that decreases down the period that why their chemical property makes them soft
cesium isn't radioactive >.< . is it?
Where's the fume hood?
u know i have a wierd urge to bite into the sodium ingot but obviously it will blow up my head
Will the digested sodium go into your stomach or your head lol it's funny
im curious, what would happen if your skin has contact with lithium?
Nice.
WILL SOMEONE JUST PUT FRANCIUM IN WATER ALREADY!? IM NOT DYING UNTIL I SEE FRANCIUM ENTER WATER EVEN IF I DIE PUTTING IT IN!!!
why can't you touch the sodium? its not poisonous right?
oh wow shes interesting to listen to, such a captivating voice ¬____________¬
group 1 is my favourite group
13:45,nice.
do u have some?
stops it oxidizing or reacting with air, like she says in the video, when the shiny part becomes dull, that's the metal oxidizing, NOW LISTEN IN CHEMISTRY CLASS
why u r using that wire like machine
so the water in the atmosphere don't chemically react with the metals
can you cut an atom with that scalpel?
and it also blocks off oxgyen
@gregod10 it IS more reactive than cesium. It has only been tested once and it exploded in Area 51. There was a little test room and one man was killed.
But that K could get a exploseve cowt if left in oil for to long
Most people don't like handling radioactive elements that you can't stop from exploding.
hahaha amazing
1. This is for school purposes, they are not allowed to test for anything more reactive than potassium due to the violence of the reaction.
2. Francium is radioactive and next to impossible to obtain.
3. Yep haha
Why is Kalium (K) called Potassium (lol) in english?
-As you can see... the shiny SILVER SURFER!!!
...
She did throw it in the water.
Googling it
why is the metal soft?
what? No francium?
umm not all metals react to electricity
12:35 Na goes weeeeeee :3
Well, I have a Cargon.
I don't think there is enough francium to give out. Also is highly radioactive.
Its difficult to cut because the knife is blunt
its caustic
No, cesium isn't radioactive. Francium is radioactive ^^
they chose to live.
No Francium or Cesium-137.
Francium is so radioactive it is impossible to get a usable amount of it... sadly
No Francium or Cesium-137. ;-)
The most stable isotope of Francium has a half-life of 22 minutes.
francium is extremely radioactive, it has a half-life of 8hours, and because of this cannot be produced stabily for any period of time as it almost completely disappears after a few days no matter how you store it. so in total, Francium is ludicrously radioactive, ridiculously radioactive and has a shorter shelf-life than dodgy vegetables, so not probably the best example to use
obviously if he is watching this video he understands that.
Why do you use chlorine and not fluorine?
Well, thanks alot! :)
+Royal Society Of Chemistry fluorine is the most reactive element known to man.
She said: Fluoride is the most reactive NON-metal.
because the reactions with fluorine are explosive releasing too much energy
Becuase Francium is highly radioactive
now try to throw Plutonium in the water
@dragonslayer050819 it just is. Lol not a good answer.
name one non-conductive metal
Lead
cuting metal with a knife.... why the hell did i study as a blacksmith 4 years?
Francium?
Too dangerous
Yes
It's radioactive
Cesium and rubidium are dangerous
It would have been cool But dont think anybody on earth can get enough Fr to react out of the 40 gramms that are constantly reacting and re-creating ( if I can say so ) simulteanously
on all the earth's surface xD.
I have an urge to bite a Francium ingot
Notice you forgot to tie your hair back when working with expriments like that. :/
as well that ounce being spread thought the entirety of the earth's crust.
In fact they are reactive because of their low electronegativities AND low ionization energies. Number of electron is not critical here. Fluorine or chlorine has seven electrons and it's also extremely reactive - and in this case is is caused by their high electronegativities AND high electron affinities. These two factors must occur both. There are some element which are characterized by only one of them, and they are not so reactive.
That'll do literally nothing.
my car is made out of pure sodium
Lol