Chromium Trioxide (FAIL) - Periodic Table of Videos

[Maxl1710]

I like Your Hair *-*

[Kebabsoup]

His hair looks soooo flammable! Haha living dangerously!

[BoredChemist]

It's always great when the safety officer trips the fire alarm

[Shoyukun89123]

Will my hair grow like that if I handle chemicals daily?

[98JMA]

@Shoyukun89123

You already handle thousands of chemicals daily.

[TomatoBreadOrgasm]

@98JMA

Hell, he already IS thousands of chemicals daily.

[Shoyukun89123]

@98JMA Smartass.

[TheVerandure]

Yay mortar and pestle!

[Zolbat]

-.- I can't watch these videos anymore, because my girlfriend can't stand the "crazy professor"

[illustriouschin]

@Zolbat Time for a new girlfriend.

[aoenchronicler]

@Zolbat DISREGARD GIRLFRIEND ACQUIRE SCIENCE!!!!

[Zolbat]

@aoenchronicler IMPOSSIBRU we have like kids and stuff

[platinumloco]

the old Merlin look eh? if i was a old white man id do the same i understand you ! :)

[BlindPlague]

How does one get hair like that to look the same in every video?

[Master0fDeasater]

Save the hair!

[Hammerfall3141]

This is awesome! :D

[purpleISH23]

PRAISE yu people SCIENCE AND MATH are awesome >:D unlike literature. who cares if the author wanted me to think this and dat -_________________-

[Kebabsoup]

@purpleISH23 ?? Is that what literature is supposed to be about ??

[NormacHC]

Epic fail.

[NotEnuffMana]

these videos kick butt... MOAR!

[theviolator23]

"Ethanol, it smells quite nice"...Someone likes the smell of booze...

[projectpat0392]

@theviolator23 It was ethanal. It sort of smells like apples.

[theviolator23]

@projectpat0392

Oh my apologies, I miss heard the professor. Thank you for the clarification.

[xDestroyer2x]

Whatever you do, plz don't start advertising o you videos, cause that just makes me lose my interest over the video

[sliverbear]

i just noticed, the chromium burnt a golden yellow colour :D prettiful!! :)

[TheTork]

So if the smoke alarm isn't off - it goes off?

oh English - why you no make sense?

[SaboeMC]

DAT HAIR

[xja85mac]

What is that Tw element on prof's tie?

[lobitas3399]

@xja85mac its meitnerium

[awesomejoe12]

@periodicvideos When you poured out the chromium trioxide it almost looked wet. Is it stored in a mineral oil or something so that it doesn't react as easily?

[kuro96inlaila]

@awesomejoe12

I believe it is quite hygroscopic.

[xSmielage]

I'd like to understand the concepts of Iodine Clock Reactions (or any clock reaction). Could someone explain it to me?

[w33zlmusic]

"And he suddenly found himself on fire."

[hv53kma]

"nothing may happen because it's an old sample" and this guy's the safety officer - that gets a thumbs up from me!

[quickknowledge]

3:00 *sniff* "Me gusta"

[jerricchong]

"It has gone from a formula—Chromium O3, to the oxide Chromium 2O3."

"Is the smoke alarm off?"

"Yeah."

BEEP BEEP BEEP BEEP...

"No."

[knockdoun]

I remember looking at the back of an energy pill at 7/11 and one of the main ingredients was Chromium, what does your body use chromium for?

[adfgfds]

Just call it a "practice fire drill" ;)

[boswell255]

Does using a mortar and pestle not introduce trace amounts of whatever it's made from (gypsum?)?

[MrDerparn]

I live in sweden. And I am a student at the age of 20, and I am VERY interested in chemistry. I actually want to go and study in Univeristy Of Nottingham :) But I realised that I'd probably have to study ALOT to be able to go there.. So I probably won't.. Sorry if my english is bad :)

[stupefythyself]

@djmussy18 well now there's the physics department as well!

[renchen831]

that is so awesome!!!!!!!!!!!!!!!!!

[aatishhake]

Not baaaad ... it'z brilliant

[bbsonjohn]

smoke alarm -> trolling when nothing happens. Malfunction when there is a fire.

[lakloplak]

"Probably nothing will happen" *Flamethrower* 

[RadioTrefoil]

Chromium-VI gave Orica a scare over in australia recently.

[bbsonjohn]

5:22 want a shot?

[amari9]

Can you explain why the CrO3 becomes redder when you grind it up? Just curious.

[nybotheveg]

@amari9 i would imagine that the surface have reacted with the air to get another color

[taylorwsims]

I like how he mentions that the CrO3 is carcinogenic then proceeds to blow it up outside of a fume hood with little bits splattering everywhere. Cool reaction!

[ProgHead777]

"I'm the safety officer..."

Oh, dear god.

[bucknell28]

Epic hair!

[dd08880bb]

Haha, great.

"Have you turned the smoke alarm off?"

"Yes." - smoke alarm goes on.

"No."

xD Brilliant! :D

[mewrox99]

thats not fail, thats epic win =D

[trespire]

Just think what a great video Brady could make for us :-p

if the Professor could combine this chromium trioxide experiment together with the next video, the one with the bunny. That would be a magical moment :-)

[TerminalRhinoVirus]

The Professor didn't flinch when it caught.

[SonOfFurzehatt]

And yet, chromium (VI) - the sort used in this reaction - is found in cigarettes.

Something to think over next time you light up.

[jacksawild]

@SonOfFurzehatt Is that what gives them their excellent flavour?

[amari9]

So without acid and/or water, it doesn't become ethanoic acid?

[jq747]

LOL 5000 students then had to march outside to the marshaling area.

[donghanyao]

HAHA they filmed that with a GoPro

[kindpotato]

Where do you do these experiments? I mean its not as if you do them at your home.

[godulous]

@kindpotato It's at the University of Nottingham.

[MasterzInGrime]

I think you need the Steadycam Professor.

[Chefianf]

nothing may happen... Oh professor, how modest you are...

[collegehumorrules]

MOLECULAR VIDEOS, FINALLY!! Thank you thank you thank you!

[periodicvideos]

@collegehumorrules you're welcome

[Spartan17725]

@periodicvideos Hello, love the videos :) are there any videos of Tetraoxygen coming any time soon? there arent many on youtube so i would be verry happy to see one :) Your videos have inspired me to become a chemist, so i thank you verry much for these verry educational videos!

[DazIOM1140]

Will the Professor have to retire at the end of the year now he is 65?

[liquidefeline]

Brady, you should subtitle your comments when he's responding to them. I can hear you, but not what you're saying! :)

[lejink]

@liquidefeline turn up your volume grandpa.. we can hear him just fine

[dudi2016]

omg ! <3 :D:D:D

[820423]

I always have huuuuge respect for people who throw petrol on a fire, especially indoors.

They are all an inspiration to keep smoking.

[andycapo123]

Where did the Prof get his new tie? Let me know please...

[tecguySD]

GoPro for watching chemical reactions. Is there nothing it can't be used for?

[TheLittebigalian]

307 views 609 likes 1 dislike?

youtube derp

[SteffeL2]

"Is the smoke alarm off?"

"Yeah"

*half a second later*

"No.."

:D

[Knightyme]

Far from a fail. You did ask that the alarm to be turned off, unless it is your job to do it, then it was not your fault.

[engelteir]

LOL thats awesome. so funny that he is the safety officer as well.

[kkjelt]

Great video. Thanks!! :)

[h3wlett]

What's that Mortar and Pestle made of? Ceramic?

[Nickmandoable]

lololololololololololololololo­lololololololololol kill it, kill it with fire lolololololololol

[jeebersjumpincryst]

WOW! U now have a large chemical manufacturer as a sponsor!!! well done, and good for Aldrich getting on board! :)

[sirkowski]

lol

[jorge10928]

I wonder what it tastes like...

[consummateVssss]

"smells quite nice" lol does he steal drinks from the chemistry cabinet?

[DevilMaster]

@consummateVssss LOL, that reminds me of an ex classmate of mine who drank the ethanol he distilled in the chemistry lab. Anyway, you don't want to drink acetaldehyde, because ethanol being metabolized into acetaldehyde is what causes hangovers.

[rbechard]

You guys should make a video about touch powder (Nitrogen triiodide). I think it would be a great compound to cover.

[punishedexistence]

Hmm didn't look like a fail to me!!

[boiledhooker]

Well...I know what I am doing for the Forth of July...

[quaxk]

I'm not sure the use of the word "fail" in the title in an attempt to cater to a younger demographic is appropriate, it seems a bit childish and awkward coming from academics

[lurkist]

@quaxk Can definitely see where you are coming from. But, why have a barrier between academia and the populous? The Prof and Brady are allowed to goof around (and be childish).

[koehlerki]

@quaxk Go back to the stone age. This is the internets.

[PissOutMyAssBarf]

@quaxk

This is the connection between the world of academia and the world of lulz and cheeseburger loving cats.

[soaleha1]

the professor is so cool!

[Barnekkid]

Awesome fail.

[djmussy18]

1 dislike is a Bio professor next door.

[teapotstrikesback]

@djmussy18 Nah, that will be the fireman who got dragged out of the pub to answer the alarm.

[meteosurreal]

@djmussy1...Yes, because he's one of the few who's against the concept of "Astronomy" or "evolution"< and my miscapitolisisation of "evolution", is rather piddly in comparision.

[JimmyFatz]

professor's hair looks like a large hadron collision

[pepsibookcat]

Oh, Professor, you are so awesome. Even your fail is an epic win!

[Entertainment1116]

575 likes and 1 dislike like a boss

[MissMadelynA]

i love how the professor talks with his hands : )

[gerjaison]

Excellent!! 

[455898334]

WAFT PROFESSOR WAFT

[toe44]

@drummergate watch all the vid,i like 3:00

[hypnolobster]

Could you ask the professor how many times he's dramatically shortened his fantastically poofy hair with fire?

[genstian]

@hypnolobster It's way cheaper than haircuts :p

[donotreply1000]

This experiment is good to do with different alcohols. Ethanol, methanol, iso-propanol and glycerol all produce different levels of reactivity. For classroom demonstrations Chromium trioxide can be replaced with PNMO4 as an oxidizer, but will not work with ethanol.

[wpaxton]

Dark red and not terribly exciting to look at? Considering most chemicals are white powders I'll say it's exciting!

[mraiford]

@wpaxton Agreed. Beautifully crystalline. In the video before he started dividing it finer with the mortar, it looked almost purple.

[shelltune]

That reaction was very energetic, and almost immediate. O.O

[Nexus2Eden]

Is the smoke not toxic that is created during this experiment? How does one know if a reaction needs to be done under a fume hood or not?

[legallyawesome1]

It is alright I am forgiven

[khaithianthang]

Rayyyyyy r u here ? 4:20 ( not bad almost burn my hair ) :P LOL

[XempireX18]

i feel soo sad when nice old professors and teachers have a shaking hand.

[ArtfulDawdger]

I just read this. "In the UK, there is no legal protection for the term Engineer; anyone and everyone can call themselves this."

I've also heard that 'chemist' is what americans might call 'pharmacist' (the person who sells you medicine and condoms). I figured this might be the right place to ask, what do you call yourselves if not 'chemist'?

[khajiit92]

@ArtfulDawdger saying chemist to mean pharmacist is used in informal everyday language, so you might say 'i'm going to the chemists' when you're going to but medicine, or you could say 'i'm going to the pharmacist's', both would be understood as pretty much the same thing (most people don't really see non pharmacist chemists everyday). but in universities and where you're likely to find ACTUAL chemists, chemist and pharmacist are used differently (the same as the US probably).

[njimko23]

Why does the title say FAIL? Its should say EPIC.

[cloudftw93]

@njimko23 Considering the smoke detectors went off, dead serious when it happens in a uni.

[XempireX18]

finally another video about chemicals

[LaMaisondeCasaHouse]

this is my favorite channel :)

[ChiefDen4]

Ah, good ol' hexavalent chromium.

[BYMYSYD]

Don't burn your hair Professor!

[nickbhalo]

lol

[Bluebuthappy182]

I remember a friend of my brother "helped" him start a fire in his new house with petrol soaked sawdust. Luckly only the rug was runed.

[arizonaafield]

I think there should be a whole series of videos about Martyn Poliakoff: Safety Officer and his adventures in keeping labratories safe. Make it into a reality show kind of like dog the bounty hunter.

[ThePepsiNarkoman]

I feel like sucha forever alone for watching this

[Mees401]

I want that red coat!

[AllGameNoCake]

I think were missing the point of the video. Wooly gloves prevent cancer.

[AGDCrompton]

Oh that professor! :D

[madjimms]

I thought that compound was carcinogenic....

[thezeved]

aaaah, finally! always wanted to see the prof doing an experiment.



[Moorich]

HOLY SHIT!

[dajwilkinson]

To prove the Professor's earlier point, the little vessel of alcohol is still quietly burning away at 5:23...

[Draxis32]

That Oxidation state of cromium is quite dangerous, where I did my technician studies in chemistry we did a research on affordable ways of turning Cr+6 back to Cr+3, and turns out some bacteria in cow/horse excrement can do that!, so if some determined area is contamined with Cr+6 and you wanna turn into an agricultural field, just go ahead and add manure!

(Obs: Very High concentration of Cr+6 may be harsh even to the bacterias so that's why this is a biological affordable solution)

[TableWolfMusic]

@Draxis32 How is Cr+6 most commonly created? (either naturally occurring or manmade)

[Draxis32]

@TableWolfMusic Most of cromium is on the +3 state on nature, but in some places it just appears with a +6 state(as a mineral), but its quite rare, it would have been reduced over time biologically or due to natural activity.

In the part that I've made the research was with the soil of a surroundings of a Cement Factory, in the process of making cement Cr+6 and pollutes the air, water and soil.

Cr+6 is also found in rat poison.

[leokimvideo]

nice reaction indeed

[Zdawg2324]

+1 for nice wooly gloves

[managarm1349]

ahhaah awesome

[TheWorldOfJames]

This guy is an absolute hero. I thought his hair was gonna catch alight when it went off!

[ctoon6]

when he smelled that liquid, it brought back bad memories with one of my teachers that just about had my balls for smelling chemicals that way.

[razveck]

@ctoon6 He's THE professor, he can smell things however he wants xD

[hondragrid]

"Nothing may happen because its an old sample, but lets have a look." Thats BSing SOB he knew what was going to happen. Playing coy to get our hopes up. xD

[aluisious]

Nothing may happen, or perhaps there will be a big ball of flame and the sample will fly everywhere.

[somorastik]

Professor you should try chinese medicine for the hand shake.

[kiybro]

Safety officer.... right.....

[IMakeOrWatchVideos]

"Its ok. Iv been forgiven."

[PyroTimo]

GoPro, nice !!

[MrPaperondepaperoni]

In your opinion, what is the most powerful oxidizing substance?

[98JMA]

@MrPaperondepaperoni

Manganese heptoxide would have to be a contender.

[trespire]

Nice way to start of the new year, hope we'll get to see more of that snazzy tie !

[lordyam]

fail?? i think thats exactly what was meant to happen

[AstOnokReviews]

My Face when the professer smells the ethanol incorrectly XD

[wesmatron]

@AstOnokReviews Look at the hair. He is immune to ethanol.

[RBIVscreamtherequiem]

@AstOnokReviews Your teachers only tell you to "woft it into your nose" because stupid people will find something highly toxic and take a big sniff of it. If you're experienced and know that what you're smelling is harmless, you don't need to "slowly woft."

[JustinRiedyk]

@AstOnokReviews He didn't waft!

[sillypiggy2]

@AstOnokReviews Ethanol is the Alcohol that we as humans drink, that is why the professer smelt it that way but i do see where are are coming from it is incorrect technice.

[eggroll9000]

Mmmmm, pure ethanol.

[MrBCMarijuana]

Awesome, keep them coming :)

[danx033]

ethanol smells quite nice :D

[JonatanGronoset]

I love seeing the Professor doing experiments! There should be more of this. :3

[samanbandana]

i see no fail here!

[sdfdsv]

Firefoxium got owned

[menonem]

SCIENCE!

[FHomeBrew]

I love the 'cup of fire' at the end. It's like there's nothing in there but fire lol.

[FHomeBrew]

I thought that even though a flame can go up a bottle, it still needs oxygen to burn. So if there's a wrong mixture of oxygen and fuel in the container, it won't burn well, if at all. May be an urban myth though.

[spokehedz]

@FHomeBrew It is. Some chemical compounds contain enough oxygen to continue to burn after they are lit. Depends on the chemical, and depends on a lot of things.

Best to practice safe practices all the time, so you do not get into a habit of doing unsafe ones.

[FHomeBrew]

@spokehedz It's true of gasoline, tested on mythbusters, who tried to light a can of petrol where the mixture was waaay off. Nitroglycerine on the other hand...

Also, would the demonstrated reaction happen under water/non-fuel liquid?

[logtothebase2]

@FHomeBrew Chromium trioxide and ethanol are water soluble, the Ethanol would certainly oxidise but in a rather more controled manner, it is the reaction that is the basis of the original breathalysers used to check for breath in drink driving, i think they use dichromate salt rather than CrO3 (still Cr 6+) though.

The crystals go from orange to green, others feel free to correct me, from memory and not checked facts before posing.

@FHomeBrew True, but the gas in the bottle may be a mix of fuel and air. When at the correct proportions, this mixture may be combustible, making the bottle explode. This is a problem in itself if you're dealing with a glass bottle, but even with a plastic bottle this means that the fuel gets sprinkled around. All this can mean that the person holding the bottle will have a very bad day.