Comparing the four halogens (2/8)

[MithranArkanere]

Now that's how you teach these things. Not some dude talking in some class while the students are yawning their knowledge out their brains to oblivion.

[TheFreakyMCKing]

Iodene + aluminium=Thundering bowl :D

[GaboonViper02]

How much iodine and aluminium did that guy use (roughly)? I'm not going to do it, I just would like to know.

[MrCarn54966053]

I love this..so explanatory

[spotlightman1234]

All of them smell terrible, and their toxic, but I still love them <3.

[wow1022]

aluminium?

u mean aluminum?

[endimion17]

@wow1022 For special Americans, aluminum. For the rest of the world, aluminium.

[chemosarefunny]

@endimion17 why can't they pronounce it correctly!!!

[panjapop]

could someone give me a brief definition of diatomic molecule is... :)

[mdma4life]

@panjapop

Molecules with two atoms, eg. H-H, O=O, N(triple bond)N, F-F, Cl-Cl, Br-Br, I-I

Diatomic molecules can also have two different atoms, eg. CO

[i0like0water]

@panjapop its just baisicly (anyone else feel free to correct me if i'm wrong...) two (di) atoms bonded together, in this video, he's reffering to two of the same element bonded to itself, e.g chlorine= Cl2. it exists that way in gaseous form (as two of its own atoms). Hope that helps (even though its 5 months late!) :-)

[panjapop]

could someone give me a brief definition of a diatomic molecule? :)

[CadetGrant]

Bromine+Aluminium= Venus looking cloud xD

[FriscoSupaman93]

boring ass shit!!!!!!!!!!!

[setldnlsnan]

iodine and Bromine's chemical reactions are crazy

[FortNikitaBullion]

how about the part with the aluminum and the fluorine, how did they manage to get such pure fluorine into the container?

[CrazyforDarkness]

The One To The Left Is Actually Empty Florine Would React With The Glass

[jokaz82]

@CrazyforDarkness Glass is inert, nonreactive. Most things are stored in glass

[TheBubaSqua]

@CrazyforDarkness Elemental fluorine dose not react with glass, but hydrogen fluoride dose. Fluorine reacts with any moisture to form hydrogen fluoride, so it is not often stored in glass.

[FortNikitaBullion]

How do you store the fluorine in the glass without having it react?

[CrazyforDarkness]

@FortNikitaBullion You Don't The Glass Is Empty

[FortNikitaBullion]

@CrazyforDarkness It's a scam.

[FortNikitaBullion]

@FortNikitaBullion But what about later when fluorine is added to aluminum?

[flashkillerffff]

shouldn't the result be AlCl5?

my knowledge of the subject ends with Lewis structures

[OldSmashbones]

@flashkillerffff nope As Aluminium-Ions carry a positive charge of 3, they can only accept 3 bondings with free electrons. Each halogen ion carries one of those, so they form Aluminium-Tri-Halides...

I hope my phrasing/nomenclature is correct as I usually only do chemistry in German

[howtodoit13]

where do you get fluorine?

[OyVeey]

@howtodoit13 Not worth it, trust me. Fluorine is the Houdini of the elements - it's almost impossible to contain securely. You'd also need to work with it under a fume hood, since it reacts with water to form poisonous HF gas.

[kriegkatse]

@howtodoit13 usually if you need flourine you have to make it by oxidizing the flouride ion, its can not be easy contained and is very dangerous so its not worth manufacturing industrially

[araeshkigal]

@howtodoit13

Chemical Register (google it) has flourine gas for sale and will ship in and to the US, though the conversion rate right now is brutal what with the dollar being so weak and all.

[JavAnarkoMet]

@howtodoit13 dont play with it, youl nuke your balls, like gov does

[domyaska]

great !!! excellent explanation!!! grazieeee

[PacoAIeman]

why the hell im watching this in my day off!

[dooki123]

they left out Astatine! everyone forgets about Astatine..... :(

[spotlightman1234]

where do they get flourine !! : o

[gentos91]

3:07 it should be AlF3 think

[Pommestoaster]

I wish we would do cool thing like that in school =/

[Chaoschemiker]

Those things are often performed in school. Definetly here in germany too ;)

If not: Just ask your teacher.

[timbotones24794]

Tim White was here.

[05cinnamon786]

huh what -ummm ?.?

[kmncztms]

Hmm, i'm not sure but are halogens react like oxigen?

[Damuna]

@kmncztms: No, halogens are a separate group - Group 7 on the periodic table. As Group 7 elements, they all have a valency of 1, meaning that they have to gain another electron in order to achieve a stable ("noble gas") configuration. This valency is what makes them so reactive. Oxygen, on the other hand, is a Group 6 element, like sulphur, and has a valency of 2.

[kmncztms]

I mean, you can burn Sodium in chlorine gas and you get table salt Or, you can burn sodium in oxigen, you get sodium-oxide

[Frresh123]

the halogens rockz!

[cockroachbalogna]

aluminum + bromine = hell in a bowl

[AHW214]

@cockroachbalogna

Or.....

2Al(s)+3Br2(l)=2AlBr3(s)

[jamo858]

@cockroachbalogna im trying to get my chem teacher to let us try.

[jasonkhtam7]

very cool

[TheBillyHatcher]

iodine + aliminium = shadow flames haha

[darksideofthebrick13]

this is really cool! to bad clorine is poisonous.

[lithiumw]

All of them are poisonous....

[darksideofthebrick13]

i have access to clorine. thats what i meant

[metalheadrowi]

Nice vid!! I've never seen fluorine before...it's such a great element!!

[quoopay]

cool o_O

[PyroErlend]

He says that aluminium is a trivalent element, but aluminium can create ions with both 2+ and 3+ charges, can it not?

[Neilidity]

No, you're mistaken: what he says on the video is correct.

[PyroErlend]

Oh, I guess I confused Al with transition metals, which often produce both 2+ and 3+ -ions.

[Neilidity]

Yes, now you're right: many transition metals show +2 and +3 oxidation states; Al is only +3 under normal conditions* - it's in the Boron group (a main group element).

* This is a disclaimer: I think Al can show either +1 or +2 (can't remember which, but only in molten salt solution, such as dissolving Al metal in molten AlCl3 - might be wrong on the details here, but this is an unusual situation, almost never happens.

[derkozten]

+1 Al compounds have been reported (e.g. Al-F), but under extremely controlled conditions and in very low concentrations.

[SplinterCell521]

does anyone know where to get these in the elemental form?

[GrafPara]

Their compounds are easy to get, BUT they are too toxic. Fluorine and bromine are both t+ (very toxic), chlorine is toxic and iodine is a risk for health [no warrenty].

Let it be. It's too dangerous.

[SplinterCell521]

i have a pound of I2 and i've made Cl2 and Br2 before. i have the safety equipment, i just don't like going to all the trouble. thats all.

[maxyevs]

i like the aluminum and bromine and iodine reaction... it would be interesting to see the smoke color of you combined both at once

[GQube3]

i concur

[BoatRepairMan]

So beautiful!!!!

[sciencoking]

aluminium+Iodine looks EPIC :D

[liquidthex]

Agreed! epic.

[ManlySlut]

The reaction I want to see is Francium with Fluoride.

The two most reactive polar elements together.

Probably would have to use Caesium.

Also, you missed out Astatine and Ununseptium. They're halogens, Uus I'll accept though.

[timothyp2009]

but astatine is so reactive its illegal to use unless your licenced

[slateflash]

Not just that, it is rare.

[timothyp2009]

aye tiz, i once knew someone who tried to get hold of some but it was going to cost something big and i cant remember how much... anyway dangerous stuff...

[GrafPara]

Francium has a radioactive half life of nearly 22 minutes. The radioactivity is 2.000.000 times higher than Plutonium.

Astatine is also a radioacive element and enormously rare. Uus (Ununseptium) can be a halogen, but also a metalloid. Let's see what the future will bring.

[maxyevs]

there is only about 2-3 grams of astatine on the planet at any one time...

it has a halflife of about 8 hours- francium's halflife is 22 minutes.

And btw, Cesium is more reactive than Francium... it has lower electronegativity...and yes i know this goes against the electronegativity trend

[GrafPara]

In the whole earth crust exists 25 grams of astatine not only 2-3.

And you can't prove, that francium has a lower electronegativity. Noone has ever seen it as a metal, only a liquid with francium in it not to mention had done some tests with it.

[klutz22]

"quickly take the appearance of the pit of hell"

lol

[lisabuttface]

ALUMINUM + IODINE = EPIC

[LucyiX]

science is fun!

[thedude77777]

i agree

[andreichikachika]

Very nice video!