The Iodine Myth

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NurdRage : Wonderfully edited and informative. Excellent composition and logical structure. I really like this video :)

Cermet : Its already nilation to me.

Applied Science : Great video! There really should be a word for solid evaporation, and nilation sounds great. Thanks!

NileRed : Follow me on Twitter: https://twitter.com/NileRed2

Hanshuber161 : I am gonna spread the term "nilation" through out my uni.. Let's hope it catches on real quick and gets into common usage.. lol

Brendan Stanford : Make Iodine Great Again

NileRed : Vote here on what you would like to see as a new term: https://goo.gl/rQ8sQ2 The new term would describe anything at temperatures to the left of the melting OR sublimation point. Regardless of whether or not it is below or above the triple point. I just wanted to add that because I might not have been super clear in the video. Also, the actual term that is used is up for debate. It's even possible to keep sublimation as the general solid to gas transition, and then use a new term for the proper phase change. My goal was to just bring forth this issue, not to push my own term.

supersmashsam : First, thanks for this video, I actually learned that Iodine has a melting point at atmospheric pressure! Secondly, although most of the explanations were good, I'm not quite satisfied with some of your explanations. I don't blame you since thermodynamics can be a quite finicky subject. The key term here that you should have mentionned earlier is *vapour pressure* As you said a vapour pressure is present for any solid or liquid. This is what is represented on a phase diagram. The boiling point simply describes a set of temperature and atmospheric pressure for which the vapour pressure of a liquid is equal to the atmospheric pressure, *an equilibrium point* . From a thermodynamic stand point, boiling is not something remarquable. Boiling is just the fast evaporation of a liquid at it's equilibrium point. Vaporisation is the general term for the transition from a liquid to a solid. In some context, it can be distinguised as either evaporation or boiling. Sublimation is the general term for the transition from a solid to a gaz. As far as I know no differentiation exist for different kind of sublimation. In the case of iodine, what we witness is a fast sublimation from non-equilibrium conditions due to the high vapour pressure of iodine. For dry ice, we have sublimation from an equilibrium state (vapour pressure of CO2 is the same as atmospheric pressure and temperature of the dry ice stays the same during the whole process). I think the reason why we have different terms for boiling and evaporation is more of a practical one than a theoretical one. We can see a difference between boiling water and evaporating water, but there is no visual cue between sublimation and "nilation". So I'd argue that we're not missing a term for describing a change from solid to gas. If we want to follow your logic and be rigorous, we'd have to introduce another term for the sublimation at equilibrium. In such a case I'd like to reserve the term _SuperSamation_ :p Otherwise, very nice video. It made me think alot!

Bryan Cox : I'm already calling it nilation.

joel rrr : nilation i like it, sounds cool im gonna use it

mohamed amin : like before watching

Astral Chemistry : Finally someone... Thank you very much for this video. Now I can just reference people to this and I don't have to argue with them.

Chris S : Nilation. I fucking love it XD

piranha031091 : Time to write a letter to IUPAC! (BTW, according to them, the official definition of sublimation is "The direct transition of a solid to a vapour without passing through a liquid phase. Example: The transition of solid CO2 to CO2 vapour." Sounds like they carefully chose their example to avoid the issue!)

ImagineBaggins : I was not looking at the video when you said "nilation" and I heard "nihilation" which I feel like would be a great word to use! The Latin root "nihil-" means "nothing" and if you think about it that sorta works very well. Esp. if a solid has colorless vapor, if it were "nihilating" it would appear to become nothing.

kostasp624 : Nile Red, could you make more videos about evaporations, phase transitions/diagrams, heats and enthalpies of different substances? I really liked your explanations on the phase diagrams, gj.

JlXip : Nilation hahaha. You're great!

mehdi rejali : I read it as iodine meth who else?

Douglas Owen : Nilation. LOL. I dare you to publish that. ;D Love it.

Matt Hubsher : nilation sounds too much like annihilation. maybe some play on evaporation since you refer to it specifically as the evaporation of a solid...provaporation?

Nicholi Martin : When you said that text books said that it has no liquid phase my first thought was have they not seen the phase diagram. We used liquid CO2 to pull essential oil out of orange peel. We did this by putting it in a test tube and letting it sublime and build up pressure until the rest of it melted. It was really cool. Great video, I will have to look at my left over test books to see if they say that.

Dollar Projects : Hey neil make a video on Ferrate(VI).. Like potassium Ferrate(K2FeO4) ... Barium Ferrate(BaFeO4)

Gameboygenius : Let's be careful with our definitions here. Sublimation, proper, means that a temperature change causes a material to phase transition. This is anologous to boiling. For sublimation, proper, to happen it's a necessary, but not sufficient criterion that the reaction is below the triple point. It also needs to happen at the phase transition curve, aka the sublimation curve. *Spontaneous "evaporation" from a solid however is the same phenomenon both above and below the triple point, so long as it happens left of the melting and sublimation curves.* And I don't personally like the word nilation because it sounds like a process for making nylon. I'd probably just call it spontaneous sublimation or perhaps solid evaporation, to reuse existing terminology as much as possible.

Doazic : Iodine doesn't exist, stay woke people.

Sohail warrassaly : You should do supercritical fluids at some point

Rubidium Cyanide : Nilation ... Auto correct hates me

Abhi Sahni : I would literally give my left nut to nilered if it meant he kept making videos like this. He never disappoints.

myfairjew : 7:56 triple ploint!

Jacob Tierney : Nile, I'm 100% on board with using the term "Nilation", would be a super interesting part of science terminology history if it takes hold.

Der Große Blubbfisch : my chemistry teacher once did the "experiment" you did in the beginning. well, the glass exploded (probably due to the heat) and we had purple vapor all over the classroom.

Dan Heidel : Science textbooks are garbage. Some of the gems I can recall of the top of my head that I learned in high school: - There are 26 amino acids (there are 20) - Solids and liquids are completely incompressible. (they both compress, just a lot less than a gas. if they were incompressible, the speed of sound in them would be infinite) - Lasers a perfectly monochromatic, the beam never spreads and all the light waves in the beam are perfectly in sync with each other - all false. (perfect monochromicity violates the laws of thermodynamics, laser beams absolutely spread out, there's special optics laws governing that, perfect light wave synchronicity also violates thermodynamics and ignores things like multiple cavity phases.)

TmoneyTechnic : I think the word nilation is sublime. (Get it?!)

manso306 : Somebody make Nilation a Wikipedia article already...

Aussie Chemist : Finding the sources on exactly you want online is very time consuming, learned it the hard way from writing thesis.

User THC : Can jet fuel melt steel beams? I think it's a good myth for the next video of yours :D

Prashanth N Rao : There's "volatilization" for solid->gas. Ref.: Treatise on Solid State Chemistry, 1976 pp 165-240. But this word has two meanings too.

aMondayMorning : It's so purple oh my god

Kyrre : myths arent wrong they are busted!!

P&J : Never really thought of this but, metal gas IS possible.. right?

phonotical : Nilation is cool, but you have to look at the route words, and nil being zero, it could get confusing, it zeroes...

Weenie Hut Jr's : Please remember to always cook with iodized salt this is extremely important! Use iodized salt or take a multivitamin supplement that includes iodide or you'll get a Goiter. Do you know what a Goiter is? A Goiter is when your thyroid swells up like a balloon and it can even get to the size of a normal (non seedless) watermelon and that's BIG! Your thyroid needs iodide or you will get a Goiter. My aunt Beth refused to use iodized salt she always used the seasalt and never too any supplements or are seafood. She got a Goiter so large that it was the largest Goiter the state of Kansas had ever seen. It got to large that my aunt Beth had to live in her car and thank God Obama got that ACA she could finally get it taken off. The doctors had to cut it off of her in her car and it hurt SO BAD they they actually had to cut it off with a sock! Yes a SOCK!

Iskrem ! : Wow! Amaizing video. I will show it to my teacher.

Theboss24611 : I think it should be spelt Nile-ation. So it doesn’t get confused with zero or annihilation.

0rganiker : Several of those examples (like 4:02) are only incorrect if you read and interpret the sentence uncharitably. "Solid iodine sublimes, which means that it does not melt but turns directly into a gas." This is true. It's ALSO true that solid iodine can be made to melt. These are two separate processes which can happen separately or simultaneously, depending on attention to detail. In fact, you showed an example of each process, so you yourself showed that it's possible to sublime iodine without melting it. Other examples you showed are clearly wrong but not nearly all of them

SeriousGamingDE : Iodine is actually a pretty cool element.

ZENITHSEEKER the Third : Nilation sounds fine.

besitzerer : Correct me if I'm wrong, but in case of Boiling the temperature of the whole liquid is around it's boiling point, whereas looking at the Sublimation (under the bunsen burner) the whole block of CO2 is still -78°C. So I think it's hard to compare Evaporation and Boiling on the one side with Nilation and Sublimation on the other. The only difference (in case of CO2 + bunsen burner) is that the sorrounding temperatur is just higher so that the process of Sublimation is just faster, that's it... I'm missing the transition point there. Hope you know what I meant. ...Or maybe I'm taking it a bit to serious :D Anyway great video as always, thank you for that!

Dalewoodian : Hey NileRed: Would you happen to know why/how naphthalene reacts with polyethylene and/or water? I work in an insect lab and after this summer the mothballs and petri dish they had been placed in had formed into a jelly.

Yaseth España : Hi, my friend, your videos are very interesting, they give me a lot of curiosity and I want to know what they are about, but there is a problem which is that I do not speak English. I want to kindly ask you to add subtitles in Spanish you would like it....

David White : Hot cum