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
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).
eeer, nice doing all that, very scientifically ok, but what's up with the hair? First thing they tell you before you walk into a lab is - no chewing, no drinking, no eating, PPE worn (gloves, specs, labcoat) and HAIR TIED BACK! I know, I know, she's not doing dangerous stuff with fire .... oh wait, she is! I've personally watched a classmate of mine burn half of her hair on a bunsen, so please tie it back. Otherwise, content wise - brilliant video.
That was a poor explanation. . All elements do seek to have 8 valence electrons, some try to steal electrons to get up to 8, like those with 6 & 7 valence electrons, while for others its easier to eject electrons to get down 1 orbit layer, ejecting their 1 valence electron (via a reaction) exposing the 8 on the next row down, making them become the valence orbit. . The difference between stealing and ejecting is like rounding up or down in math. Sometimes its easier to go up, sometimes down.
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
francium is extremely radioactive, it has a half-life of 22 minutes, 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 reactive, ridiculously radioactive and has a shorter shelf-life than dodgy vegetables, so not probably the best example to use
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.
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
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.
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
@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.
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.
@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.
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.
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).
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
I feel like eating the metal piece cus its so soft but it will explode in my stomach
Residue: death Oxide
240p... we meet again
chris cautillo
why are the metals easy to cut
because they are soft.
Hello darkness my old friend
''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!!!!
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!!
I loved the pop sound of H2
My school is too poor, theyll just show this video instead
Made my day for the exam. I mean who'll read the theory? I have stuff in front of me!
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
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
Just had a phone call from ELTON JOHN.......says he wants his glasses back!!!!
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 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
It's super rare. As little as 20-30 g (one ounce) exists at any given time throughout the Earth's crust
Is it sodium oxide or peroxide ?
great teaching. thank you.
Notice you forgot to tie your hair back when working with expriments like that. :/
You're boringggg, throw* the whole thing in :D
BORING!!! 15 minutes no rubidium, ceasium and francium and it turned out to be a class instruction video!!!
It's too unstable to be found in nature and a half life of 22 minutes make it almost impossible to study.
These videos are sooo helpful :D
cesium isn't radioactive >.< . is it?
Exact same thought. I was about to write that as well lol
this video has increased my love for chemistry...😘😘😍😍💜💜
Yeah its right
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
I thought that the brick was all lithium. I was like "must put whole thing into water!"
thank you lesson I'm somaliland
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).
umm not all metals react to electricity
Francium is an extremely rare meterial, also its only held in controlled environments, due to its volatile nature.
eeer, nice doing all that, very scientifically ok, but what's up with the hair? First thing they tell you before you walk into a lab is - no chewing, no drinking, no eating, PPE worn (gloves, specs, labcoat) and HAIR TIED BACK! I know, I know, she's not doing dangerous stuff with fire .... oh wait, she is! I've personally watched a classmate of mine burn half of her hair on a bunsen, so please tie it back. Otherwise, content wise - brilliant video.
my car is made out of pure sodium
That was a poor explanation.
.
All elements do seek to have 8 valence electrons, some try to steal electrons to get up to 8, like those with 6 & 7 valence electrons, while for others its easier to eject electrons to get down 1 orbit layer, ejecting their 1 valence electron (via a reaction) exposing the 8 on the next row down, making them become the valence orbit.
.
The difference between stealing and ejecting is like rounding up or down in math. Sometimes its easier to go up, sometimes down.
Awesome
Found this while studying alkali metals in science class.Epic. Nuff said.
i just watched this vid again and again to see the satisfying cutting of the metals
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
oh wow shes interesting to listen to, such a captivating voice ¬____________¬
francium is extremely radioactive, it has a half-life of 22 minutes, 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 reactive, ridiculously radioactive and has a shorter shelf-life than dodgy vegetables, so not probably the best example to use
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.
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
Maybe she did use francium, it just blew up the camera and the whole lab which is why they couldn't send the video on youtube XD
cuting metal with a knife.... why the hell did i study as a blacksmith 4 years?
Very helpful for science students.
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.
dont know about you, but im pretty sure there is no such thing as a black snmith metal...
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
AWSOME!!!!
helped a lot thanks👍👍☺☺☺
@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.
chlorine gas fumes with no masks.. lets teach all the bad habits...
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.
Francium is so radioactive it is impossible to get a usable amount of it... sadly
Cool science and all... But you have that kinda voice that puts me right to sleep...
Where's the fume hood?
I don't think there is enough francium to give out. Also is highly radioactive.
Most people don't like handling radioactive elements that you can't stop from exploding.
13:45,nice.
why can't you touch the sodium? its not poisonous right?
obviously if he is watching this video he understands that.
@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.
so the water in the atmosphere don't chemically react with the metals
no, only cesium created after a uranium fission reaction is radio active
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.
No, cesium isn't radioactive. Francium is radioactive ^^
The most stable isotope of Francium has a half-life of 22 minutes.
I'd love to oblige, but the U.N.won't let me.
Why is Kalium (K) called Potassium (lol) in english?
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).
@dragonslayer050819 it just is. Lol not a good answer.
But that K could get a exploseve cowt if left in oil for to long
im curious, what would happen if your skin has contact with lithium?
She did throw it in the water.
-As you can see... the shiny SILVER SURFER!!!
...
Becuase Francium is highly radioactive
now try to throw Plutonium in the water
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
now that's the BEST scientific observation eva (thumbs up)
name one non-conductive metal
Lead
Its difficult to cut because the knife is blunt
can you cut an atom with that scalpel?
so they wont react with the moisture in the air
what? No francium?
I have an urge to bite a Francium ingot
it will blow up if it's not
No Francium or Cesium-137.
That'll do literally nothing.
group 1 is my favourite group
and it also blocks off oxgyen
francium look like atomic bomb
@apard7 no but francium is.
No Francium or Cesium-137. ;-)
why u r using that wire like machine
why r u using that circuit tester
its caustic
they chose to live.
Googling it
Blender
trolololol