Iodine - Periodic Table of Videos

[cheasify]

we did a Lab today where you saw how starch and iodine react to make a blue color

[BennyNgYK]

So Does This Mean ... We Could Make Purple Smoke Grenades?



[TheSUPERCHENS]

Joke:A Neutron goes into a restruant and a proton said,"Hey,you,no charge." Get it?

[HLiNaKRbCsFrUun]

Iodine - An element which is rather like a highwayman: It suddenly leaps out of a bush and steals your electrons

Bromine - An element which is rather like a cloud of hornets: It gets angry on contact with everything and then does as much damage as possible

Chlorine - An element which is rather like a horde of cannibals - It will eat your electrons just to satisfy it's hunger

Fluorine - An element which is rather like a schizophrenic with an AK-47 - it blows the living hell out of your atoms

[TheItalianPerson]

is iodine cheap?

[nickbhalo]

@TheItalianPerson Not really, 100 grams is about $50

[lanuitvivant]

I-oh-deen. Not mocking you. I just really enjoy studying languages and different accents. Cool video.

[LOSTKILLERDRAENEI]

Get on it Neil :)

[oomblikkies]

How to make fingerprints visible.... I have done this reaction many years ago. Press with your thumb, or any finger, on a piece of paper and then hold this above a beaker hot iodine crystals. The sublimed iodine will react with the fingerprint and turn it into a visible image.

[mariohendriks1]

You should do a Bray–Liebhafsky reaction. That's one off the coolest reactions you can do on iodine :)

[lexichronicle2]

I'm currently into week two of extracting iodine from seaweed, using 21 kilos of seaweed. After much chopping, drying, burning, boiling, filtering and extracting, I'm now down to about 10mls of purple cyclohexane. Sublimation ahoy! And my absolutely minute yield.

[librarychair]

Because of this video and the boron video I just had a HORRIBLE dream!

I dreamed that I somehow accidentally got a lot of iodine, boron and aluminum into my parents' toilet and flushed it. Because it was a dream, it kept flushing, and the reaction was really violent and boily and went everywhere and started a bunch of little fires. I kept trying to put it out to no avail. Finally I turned the toilet off, but there was still boiling water and fire everywhere.

Could that ever actually happen?

[yomyssebyy2]

@librarychair no .. beacause when you flush the toilet all the chemicals go out the drain and end up in the main drain. so there would be a lot of smoke coming out of the man-hole covers but nothing else .... so there is no way your dream would come true .....hope this is helpfull :D

[spotlightman1234]

@librarychair no , because there would be too much water, and boron, aluminium and iodine don't react fastenoguh to boil the toilet water. funny dream though!

[psionicman]

he spoke!

[snowisholywater]

Can you do a video about the prices of all these chemicals?

[KDurk96]

the scientist dude looks really creepy like he wants to come to my house and rape my family...

[hyphens]

Mr. Clean was pretty pissed

[nickkap08]

why iodine is brown in water and purple in hexane????

[sean918]

@nickkap08 Iodine is a nonpolar solid and dissolves best in a nonpolar solvent like hexane. But in water, it doesn't dissolve well.

[nickkap08]

@sean918 i know that.

i ask about the colour

[AnAmSPR]

0:45 King of Queens

[blobbyrock]

I had 2 watch this 4 homewrk -it sucks

If u r into science watch is it a good idea 2 microwave this by jpizzle1122

[chifi55]

Iodine is grey! Its fumes are purple, not the solit phase!!!

[japanesepoptart]

@chifi55

no, If you make honest-to-goodness big ol' iodine crystals, they will be a very dark purple

[OOZ662]

@blobbyrock Except that there isn't any science involved there. Entertaining, sure, but not science. People who enjoy science in itself enjoy watching these; I'm on my second tour through the whole collection of these videos, myself.

[jcreen11]

Love all these videos!

[DeltaGale]

Lol. Unfortunately I haven't got any cuts now... You would think he would grab a chopper and hack his hand just to show us that iodine is a powerful antiseptic...

[HWGuyEG]

Tadpoles and Iodine YIELDS frogs. :P

[YOSF0113]

Where do you get the vials from? What type is it? I am interested in buying some.

[KzrrainzYes]

@kristijanadrian But yes, I agree.

[KzrrainzYes]

@kristijanadrian Synonyms are words with similar meanings. Aluminium and aluminum refer to EXACTLY the same thing. Like grey and gray. Alternative spellings.

[ThePyroProduction]

didn't mention anything to do with starch, although that's probobly more biochemsitry than chemistry.

[Riley0143rsj]

Im American, and thus usually say Aluminum, however, the IUPAC states Aluminium as the recommended spelling.

[RequiemAeterman]

American mispronounciation birthing fail spellings FTL

[WaveofTwilight]

@5:00

IT'S THE DARKNESS!! RUN!!! XD

[SSJkiller]

It sucks how I'm the only one I know that genuinely enjoys chemistry. Every single person my age that I've ever met absolutely loathes the subject. Props to you guys for getting more people to realize the true beauty of chemistry.

[TheCharlieHD]

lol lol

[Channypogosticks]

hehehehe the ummmm the neil dude was making a facial expression like " UHHHH now i have to clean again"

[VengeanceIV]

its I-O-dye-ñe not I-O-dee-ñe get it right...

[Cream147player]

@VengeanceIV I assume this American English versus British English because I've never heard this i-o-dye-ne pronunciation in my life.

[VengeanceIV]

@Cream147player well that's probably just American pronunciation then =p 

[Cream147player]

@VengeanceIV That being said, do bromine, chlorine and fluorine rhyme with iodine in American English, because in Britain they are all said with the ee-ne sound at the end.

[VengeanceIV]

@Cream147player I know that chlorine and fluorine are pronounced with an ee-ne on the end, not sure about bromine, It never really comes up in dialogue, and most people say iodine with the eye pronunciation. It's kinda like people pronounce 'IKEA' like eye-keeya as though it were some sort of kiwi shaped product from apple haha.

[sabaths1fan]

@VengeanceIV They are from the UK they speak differently. Don't be so close minded. And, oh by the way, they way they are pronouncing it is the more worldly excepted way to pronounce it, besides being correct also.

[matthewdcroft]

... Joker.

[matthewdcroft]

Tadpole + Iodine = Frog

[qwercz1]

WTF is with Youtube? Videos from "periodic table" are streaming very slow..

[HeroinMethod]

Stop downloading porn you dumbfuck

[paronfisk]

don't mix with Ammonia :D

[Roxy222uk]

Could someone remind me what 'sublime' means? Thanx

[melchior00625]

@Roxy222uk It's a state change (meaning the substance itself doesn't change to a different substance) where a substance turns from solid to gas.

[MultiReplika]

aadasda

[AJFreeway]

Hospitals use iodine all the time. It's in that big bottle of red solution that they pour on body parts before they operate on a person to clean the area.

[pimbilibom]

Iodine also forms a compound with the name "periodic acid" which deserves mentioning here in "Periodic Videos" ;)

[CathySander]

The equation is:

2HCl+2KI+H2O2 > I2+2KCl+2H2O

[AHW214]

A nice way to make iodine is:

HCl (aq) + KI (aq) + H2O2 = I2 + KCl + 2H2O

I don't know how to balance the equation.

[omegacds]

I totally love this.  It's inspiring me to get back into Chemistry and teach. Can we have a video on heavy water?

[Frresh123]

@kennyozakie : and you are fuckin ignorant.

[Derek51386]

What the hell is "aluminium?"

[KzrrainzYes]

Aluminium and aluminum are the same, just alternative spellings.

[Derek51386]

Yeah I know, I was just being a cunt :( Thanks though

[KyuubiNaruto1337XD]

Like Caesium and American's Cesium

[basherofnoggins]

@KzrrainzYes the only difference is that Aluminium is correct :)

[KzrrainzYes]

@basherofnoggins Both are correct, sorry.

[KzrrainzYes]

@basherofnoggins There is no difference other than the spelling. Both are correct, sorry.

[Mike28115]

@Derek51386 aluminum. lol don't know WHY they add the "I" in the end.

[Vlakpage]

Aluminum sounds like lazy spelling. Don't know why? Because that's its name in periodic table. Why you don't say Uranum, Ytrrum and so on?

[melchior00625]

@Vlakpage Well, all English speakers say "Platinum", "Lanthanum" and "Tantalum"... Just because we Yanks happen to call it "Aluminum" doesn't necessarily mean we're wrong in doing so.

[BackgroundNose]

@melchior00625 I'm affraid UPAC declared "Aluminum" wrong and "Aluminium" correct. But suit yourself. It's just a name after all...

[TechNinja00]

@BackgroundNose Not quite, they declared "aluminium" as the standard international name for the element in 1990, but three years later also recognized "aluminum" as an acceptable variant. They include both names on their versions of the periodic table.

[yourparentalfigure]

LOL some british kid at my school calls it that too... :S :P . I was like why do you call it that? and he was like. cuz thats how it is suuposed to be.. I guess just different things we and them got accustumed too =D

[rals8899]

Nicely presented reaction. For those who didn't get the ecuation, here it is:

Al + I ---> AlI3.

[ChemNurds]

ok,,,,,,,,,,,,,,,,,,,,,,,,,,,,­,,,,,,,,,,,,,,,,

[Lizaellingea]

nunbin mega aufgewirbelt und ungezogen heute wer mag mit mir schreibn und so

[vitunkyrp]

clean that up

[Jtking3000]

Td + I --> FG

my favorite equation too :-)

[Mike28115]

@Jtking3000 what happens when you combine Fluorine, uranium, carbon and krypton with Yttrium, oxygen and uranium?

[douro20]

Iodine as a disinfectant is made as a 1% solution in povidone, with other chemicals which act as preservatives and stabilizers.

[douro20]

Dr. Pete Licence...that's quite an odd name.

[HugoJanKanAl]

Wouldn't call the thyroid a small gland.

[13killerx]

WATS up freaking Stine nice hear

[Guinnie]

Down Under they call it Eeee-O-Dynne

[sybaris720]

Sorry, I don't know a whole lot about chemistry, but why is it called aluminium TRIiodide, if you are only combining two elements? wouldn't it be bi?

[13someguy13]

there are 3 iodine atoms in that molecule, therefore tri, not bi

[angelxsid]

@sybaris720 It has a molecular structure of AlI3. The tri means 3 iodine atoms, well can do. Google triiodide.

[Javila109]

@sybaris720 in chemistry, bi means hyrdrogen, not two. Carbonate: (CO2)-3...bicarbonate: (HCO3)-3

[43932]

NO ! bicarbonate is a common naname not a chimical name, so bi = di = two , hydrogen is hydro or hydrogeno, like in hydrogenocarbonate ( HCO3- not -3)

[oggybodoggy]

What does "Antiseptic(?)" Mean?

He says it at 4:30

[Ballpythondude420]

it kills germs and viruses

[quexalcoatl]

Anti bacterial. Like rubbing alcohol or peroxide.

[brittonbearclaw]

Is there a Martyn Poliakoff fan page somewhere ;)

[DevilMaster]

@brittonbearclaw There are some Martyn Poliakoff pages on Facebook.

[azninvasion217]

lol. Tadpoles + Iodine = Frogs!

[SuperSkarmory2]

@azninvasion217 Tadpoles - Iodine = Frogs

[exodia94]

wow u guys seem to do backyard science alot, very fun u noe unlike me we had to read dead books and learn our mole concept by hard nt much science experiments, and if i were to tell u wat we do for our chemistry experiment, maybe u will laugh

[g1tipsandtricks]

lol , that guy was pissed off at the end :P

[x246869]

Fixer from the old black and white photo development chemicals takes out iodine stain I was told. Sodium Thiosophate?

[pepperly209]

Yes indeed another fasinating vid. I wish I would have discovered ur channel years ago ...( no YouTube then) but it would sure make chemistry so much more interesting and fun to attend to, instead of butterflies and worries of unknown chemical hahaha

[magick205]

@Chas1422: Great. So post the instructions here on YT? You just know some numb-nuts is going to try it. One Darwin Award coming up! LOL

[cincodemay123]

IMHO, that's a good thing.

[magick205]

@cincodemy123: I agree, but just a little less sensationalization. Discovery channels offering seem to be more like watching a police chase video any more. We need more BBC and PBS documentaries. That kind of quality.

[CHAS1422]

@magick205: You're right. Making nitro-triiodine is kind of a punk science experiment. I did it as a teen myself after reading an "underground experiments" pamphlet. (The iodine chrystals were hard to obtain). The experiment actually helped spark my interest in science. Punk science is potentially an inspiration for the immature, but I agree it could be also be dangerous. I removed the recipe.

I love this periodicvideos series!

[magick205]

@Chas1422: It's a very cool series. Yeah, when I was a kid I experimented with homemade rocket engines. Not all my trials went well, or the results of be hidden. (Do you have any idea how long it takes eyebrows to grow back!) Every summer the ERs around here fill up with rubes screwing around with homebrew fireworks. Keeps my wife hopping and well employed as a nurse. It was fun, but you definitley need to exercise care and have adult supervision. Best to you and yours.

[TigerSlashX]

what'd he say at the end?

[TheBenEEeee]

Something akin to "I'll knock your bloody heads off!" I reckon. :P

[Ericspasstime]

what was the residue that was left after every thing burned off in the bowl?

[caegr]

Aluminium triiodide

[taofledermaus]

Another fantastic video. I always learn something new watching them.  Great presentation.

[mojojojo542542]

i lived in nottingham :P that was like freaking 100 years ago :P

[douro20]

Is that a compressed nitrogen hose with the gun on the end of it?

[migitman999999]

how do brits get alumin-ium from aluminum?

[HiyoriTamura92]

You guys spell it wrong, is how.

[CougarJargon]

@migitman999999 actually you should be asking that the other way around. Ever noticed how tons of other elements end in -ium? Most of the world outside the US uses that spelling and pronunciation

[wrnchhead76]

Well actually we changed it to aluminum (Americans) everywhere else calls it aluminium. IUPAC decision was for aluminium, we just ignore it.

[MichaelKingsfordGray]

Wrong! Humphrey Davey, the Brit who discovered it originally called it "Aluminum".

Folks in pommyland objected and it was 'regularized' to "Aluminium" afterwards, to sound like the other elements.

The Yanks spell it CORRECTLY as it was intended by Sir Humphrey.

[cincodemay123]

Thanks.

[Dibria]

@MichaelKingsfordGray Well that's debatable, lots of things change name with time and the argument that we should still call 'Aluminium' 'Aluminum' is much like saying we should still call 'Meitnerium' 'Eka-Iridium'.

Also the original name given by Davey was 'Alumium' not 'Aluminum', he later changed the spelling when releasing a book on the subject so the 'original name' argument doesn't really stand.

At the end of the day does it really matter? Everyone still knows what you mean.

[brainlicker1]

what would u use to grind it? like a coffee grinder or some sort of ceramic thingy?

[ViraIVideos]

Thanks for adding the new Iodine vid!! :)

[risbolla]

Black magic!

[peakbusiness]

I know this may sound daft but the quality is too high for downloading even on a fast connection.

Any chance of a lower res version for faster download ?

Would also like to see the names of the 'stars' of these vids - can pick them up from time to time but they deserve to be better known for being great at what they do.

[Itslvle]

I guess it depends on how you define "fast", but the problem is most likely which youtube's server you got connected to and how much traffic it's experiencing at the moment. With a bit of luck, just refreshing once or twice could change that.

[peakbusiness]

Nice idea but they all take ages - but they ARE worth it - Poor Neil's fume cupboard :o(

[dasgemuse]

well since it is illegal and used to make meth, these chemists are obviously teaching their students to make meth and are breaking the law... bunch of bandits i say. lol

[gulllars]

I support the idea of making longer chemistry videos. I'm sure there's an audience for it. The videos of this channel range from 10.000 to above 100.000 depending on the element.

Making lecture-lenght (45min) videos on some of the popular elements (by views here), or elements with many exciting features seems like a good idea

F.ex some exciting/fun reactions, the history of the element, practical applications, general safety precautions, and chemical properties. Basically a more detailed version

[AcanLord]

That`s really quite cool. One other Major biological role iodine plays Is the metamorphosis of nearly all jellyfishes.

The polyps are queued to undergo metamorphosis into jellyfishes when the Iodine levels and temperatures in the sea increase. Which of course is a yearly occurrence world wide during spring.

[blinking801]

You know these videos are so pleasant and interesting to watch, why not take it to the next level and make hour long videos on chemistry. I am sure people all over the world would be interested.

[liquidgrain]

Shadow fire!

[Cream147player]

Water is an obvious molecule to do at some point. I know that that may seem a boring suggestion people, but the chemistry of water is very exciting! I just hope that whilst I want to see more exotic compounds covered also, that the simple yet vital ones like water, carbon dioxide, etc. don't get overlooked. A balance is necessary.

[Gomka1000]

If you add too much iodine cant tadpoles become frogs without getting any bigger?

[culwin]

Stig's gonna choke somebody up in here.

[dbc616]

Ethanol cleans off the stain quite well.

[Nick28th]

lol nice video guys, lol how do you think you will get that off? magic eraser?

[Robberbaron15]

First, I love the videos and I have shown a bunch to my high school chemistry class. Second, and this maybe a lot harder to do, but do you think you could include pictures or videos of examples when the professor is talking, it might help some people get a better picture of the examples that he gives.

Thanks for all these great resources.

[williepie]

pour some ammonia over the idodine and it makes nitrogen triiodide when it drys it can detonate from just a breeze its really cool

[TeoTheAwesome]

too bad the synthesis of nitrogen triiodide is illegal in Italy :(

[AcanLord]

why is it illegal?

[TeoTheAwesome]

I think it's because it is too dangerous because of it's very high level of sensitivity. Someone stupid enough could put it in the middle of a road and as the car comes by it would detonate, although I'm not sure of the potency of nitrogen triiodide.

[TheElCabronsito]

for molecules -

can we see all the different bonds, and what the different scientific notations are for them? I have seen different kinds of models - the hex grid kind with differnet signs for different bonds - the 3d models that show relative electron could sizes as well as nuetron and proton boundries - even animated dna molecules like in Jurassic Park. A video about the different molecular representation methods and how to identify the bonds would be awesome.

[85kanuto]

@periodicvideos:Is it true that iodine is less dangeours than the rest of the halogenic group?

Thanks in advance for the answer.

[Cream147player]

I know your question isn't directed towards me, but just in case you don't get an answer from periodicvideos, the answer is yes, it is true. The halogens become less dangerous (because they're less reactive) as you go down the periodic table, but once you go past iodine then you have the new variable in that astatine is radioactive, and so more dangerous than iodine, and if you went down to ununseptium, that would also be radioactive.

[85kanuto]

Thank you for the answer.

My chemistry teacher said something

different and thats why i asked about that.

[Cellogamer]

It actually is, simply because it is a larger atom compared to the other halogens. The valence level is searching for only 1 electron just like the other halogens. Because the pull between the positively charged nucleus and the electrons is weaker (due to distance). This makes it a bit more difficult to start a reaction with iodine compared to say, chlorine, but it is a bit less reactive, but is still very reactive compared to most other elements.

[dylz]

hahaha

tadpoles + iodine ----> frogs

i love it

[neddy17]

for molecules.... i sure hope they look at Potassium Nitrate, one of the most important compounds or the past millenium!

[Asskickinkid]

@neddy17 i agree with looking at this compound. 2 votes for that =D

[Arthur40TwoDent]

Another great video, I'm looking forward to the molecules and compounds videos next year.

[PartVIII]

4:10 yes, it is quite unfortunate.

i love these updated videos. please continue to post videos periodicvideos!

[periodicvideos]

@PartVIII We won't be stopping...

In fact we have just announced an expansion for 2010, so we will update elements AND start looking at various molecules and compounds every week.

Any molecules you fancy seeing in action?

[seahawk124]

VX nerve agent (C11H26NO2PS)?

It's British made! You might be able to get some from ICI or Porton Down Military Base.

What! I want to know about one of the most dangerous chemicals in the world!

[yusuf0208]

I think its a good idea to take photos of the reactions, and post them on the internet.

[periodicvideos]

@yusuf0208 How many things do you think I can do at once!!??

That said, have you seen all our pictures at Flickr (periodicvidos)... Have have some behind the scenes stuff...

[macnutz]

I remember seeing people with 'goiters' in the southern US when I was a child. Many, many, years ago. :)

[petercourt]

Got an offer from Nottingham the other day, maybe see you lot there :)

[Ritzoid]

Next iodine video = tadpoles + iodine. That is crazy!

[coolliger]

great vid

[P00P0STER0US]

I suddenly got a craving for table salt...

Merry Christmas Periodic Friends!

[andrebrannan1953]

I've said these before these should be on terrestrial t.v. in the U.K. instead of the constant repeating of Coast.

[Sep3lio]

They would certainly be a nice change! Everyone needs to know some chemistry. Then the only sane people in the world will be the chemists.

[LNOL]

I wanna see Fluorine react with Cesium!

[jbohbot1]

i dont think it would be that amazing. if you want to see an explosion just buy fireckrackers!

[fmscribs]

Great as always, gentlemen.

Is this the same process the military uses to make those colorful smoke grenades?

[UltimateitemHacker]

I am so going to notingham Uni JUST to be taught by this guy :D

[DuskY1991]

Awesome video, keep it up, I'll keep watching!

[crabbygaz]

Great stuff.

[TheSingingNerd]

I always look forward to these videos, and this one in particular was relevant to me because someone I know recently had thyroid cancer and he was treated with radioactive iodine. The thyroid was the only organ that absorbs the iodine particles being shot out apparently. In any event - great video...thanks so much for doing these.

[gremlindude10]

the editing skills have come on a lot since the beginning. well done who ever does it.

[d00mDK]

What did he say in the ending ... i'm sorry i forgot his name xD!

[PenguinDood]

Eye-oh-Deen

:)

Keep up the good work guys.

[rax2099]

Neil didn't seem too happy...

[periodicvideos]

@rax2099: Neil's never happy when people mess up his fume hood!

[Chaosblade777]

@periodicvideos What does Neil say at the end video? I can't quite make it out..

Brilliant video otherwise, beautiful iodine reactions..