Chemistry experiment 47 - Sublimation of Iodine
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- Опубліковано 17 жов 2024
- At room temperature, elemental iodine is a black-bluish solid.
When heated, solid iodine sublimates and enters the gas phase.
Iodine got its name from the Greek word ‘ἰοειδής’, meaning ‘purple’. Indeed, iodine vapor has a beautiful purple color.
Regaining solid iodine from iodine vapor can be achieved by cooling down iodine vapor on a cold surface.
Beautiful iodine crystals are formed.
Hazards:
Iodine is toxic
when it's solid it looks like blueberries
eat them
Dont! You'd shit purple
drifter13 More like you'd go to the hospital for iodine poisoning.
U wouldn’t just shit purple u would have a stomach ache then shit purple
Wait... I thought they were blue Berrys
it melts into a liquid at 110 degrees and vaporizes into a gas at that temperature and pressure.Increasing the pressure will keep it in a liquid state. 5 grams of iodine heated in a sealed test tube(increasing pressure) will turn into a liquid and stay that way for a few seconds before boiling off into a gas. This result may also be seen if you use a larger amount of iodine,or a pressure chamber.
Anyone here from onljne work at school
is anyone *not*
Me !
Yes me you are from which school our Teacher opted this video as here is a good demonstration
@@legendaryexperiments7003 it me
@@chandanaghosh1623 what couldn't understand
Beautifully executed video. Thank you for the subtitles.
ㅇㅈ
Still useful tho😢
Hi, I'm wondering if I can use a snippet of this video for our college's (Labuan Matriculation College) video production for online teaching (due to covid19). It is not for commercial purpose. We will credit you in the video.
I have a few questions! first, how sturdy are these crystals? can I repeat this process to get more, bunched, and thicker crystals? how long does this take? could I freeze, say, an animal skull and get the same effect, it would it not stay cold long enough? last, are they toxic after forming?
They would be as soft as the upper laayers of ice, you can scratch them off with your fingers like dust :)
0:08 At first I thought they were blueberries
Same
THANOS GAS
GOD COMMENT
I WAS LOOKING FOR A COMMENT LIKE THIS
I miss my old science classes, lol. Never get to do cool stuff like this in person much anymore.
I know! Stuff like this would have been so cool!
this is chemistry and it's not cool.
... yeah its definetely not cool well did u know chemistry is a part of science???
Man I just get assigned a page and that’s it no cool stuff
*cough* online school
Hey dude one of my online classes used you're video
Science is so beautiful...(when its practical😜
true
What if our hands stands above like the ice? Will our hands be covered with those crystals?
why do people dislike the video. They got what they wanted
Who is doing this for Chemistry?
That's awesome but nobody explains how long it takes to leave the round bottom flask on top and how long it takes to form crystals?
If they are dissolved in distilled water what is the way to get them back to solid state but more like they look like at 0:13 and not as crystals.
How do I deal with the condensation on the top flask? It just drips water back into the bottom beaker and I never collect any iodine.
usually this would be done in a lab with controlled humidity.
Hows the guy who unliked this video
hes fine
May i know how long it will take for the crystals to form?
above the surface of the iodine they will start forming within a few seconds and up the sides of the beaker.
Yes, but is there any residue left on the outside of the flask?
Shouldn't you be wearing protective gloves for lab work? (Just for good practice and as an example to the kids.)
I've asked this question before when I had my first lab and my lab professor/manager said that it risks the chance of dropping any glass instruments because most of the time your hands will be wet. Maybe, my professor never thought of gloves with traction tips.
@@elisei01 Yeah, screw the next generation. We should end the world right now and become extinct :D
Is that potassium per manganette
How long does it take for the fumes to stop producing
iodine in solid form does still release purple vapour at room temperature, so I'm assuming never
Why Is Chemistry so beautiful😮💜💜
Is iodine toxic? Will it be safe operating in an open circumstance?
We have a note in our book warning of poisonous iodine vapor
Iodine is my favorite type of element
yo how's your gas?
awesome video!!! ill show this to my class
How long it will take?
The problem is...
How r u Gonna get the solid iodine crystals down?
Just scrape them back down into the beaker
So how do you get liquid iodine?
Ok... but how do u do what u did?
1) Get iodine (it doesn’t have to be spherical shape), a beaker, and a round bottom flask (you could use different containers if you want but that’s what was used here, so long as you have something that can cover the top and hold ice)
2) Put the solid iodine into a beaker, and fill the rbf with ice.
3) Put the beaker on a hot plate in an area that has good ventilation (iodine is corrosive and an oxidizer) and heat the beaker.
4) Once you see vapor coming off the iodine, put the rbf on top of the beaker, and allow for the iodine to sublime for a while.
5) Crystals. Avoid touching with your hands as mentioned before they are not good for skin.
Is there no leftover
is iodine a toxic gas ?( perhaps because it is in the same group as chlorine?)
Yes, i think
how about pink crystal ?
NO wait! Sublimation is when solid goes into gas directly.This is not happening when you heat iodine. It goes into liquid then it goes into vapour. Look at the phase diagram at 1atm. However, at room temperature and 1atm without heating some sublimation happens cause idodine's vapour pressure is low.
What is happening in this video is nilation (solid evaporation) since it is below the melting point.
Good Subscribed 👍👍👍
can someone explain why the solid iodine went from dull to shiny crystals after it was sublimated :o
It’s because there wasn’t any mold to give it a shape, so it took a random shape, as water when it gets solid without any mold :)
@@queencarrot403 awesome!! Thank you!
What is the function of this iodine???
In science , iodine is used to stain plant cells when looking at them through a microscope to get a better view of the cell and the structures within : e.g. the nuclei.
Whos here from home learning
Yep
We have to do this table of observations I dont even understand
Ye lol
how much are they worth
so its a chemical or physical change? ?o?
BookFanZ YT Physical change. The iodine is just going from solid to gas to solid. It is not reacting with any other chemicals.
when it was purpl balls. !!!! 👍👏👏👏👌👌good well done. 😇👌👏👌
thanks
for the video
i had to write the observation
schools stuff
genuinely thought they were blueberries oops
is this deposition ?? just askin
This is sublimation, the opposite of deposition... Sublimation is going from a solid to a gas deposition is going from gas to solid
what other changes of state occurred?
crystallisation
No
So this is the power of Purple Haze...
Science is best
Great video, thanks.
If it's crazy but it works, it ain't crazy!
damn that ice turned into terraria underground hallow :skull:
I wish they did an asmr of scraping the crystals off
Amazing ❤
When no mans sky generates a purple planet:
My brother did this for a science project about iodine once
It's kind of like an under block
POV: You came here because your teacher told you to watch this video
Frr
Good work
Very interesting 😐😉
This is not sublimation! This is condensation.
The birds sound is beautiful
Anyone else here because their chemistry teacher cant teach so you are trying to teach yourself 👁👄👁
ليش ماكو عراقيين 😅
Why are there no Iraqis?
I hope this was recorded in a well-ventilated room and while wearing a gas mask.
that was beautiful
Beautiful 😍
I like the experient
That's amazing I love chemic😆
From liquid to solid, interesting
good video nice thanks
superb
Nice 👍 👍
Wonderful
Nice purple gas
Robert Medrano was here.
who thinks solid iodine look like blueberries?
But good video! Thanks.
excellent !
Mind blowing
Who wanna eat that iodine
I mean look at it 0:11
😂😂
Was geht
SHEEEEEEEESH MAN IODINE IS SOOO OSM ;) ME AT SIXTH GRADE
Grüße aus der 8F vom WHG München
Ha ouais, c'est violet en effet.
Oui oui, je suis un Wankil fan, je ne fais que passer.
This is cool
Purple
forbidden blueberries
*this is god and the tube is the universe after thanos snapped his fingers*
Hello I saw your comment you put on hello it is rana you said piper was not good togavin I don’t think so piper definitely deserves enything I love piker so yeah I love piper way way way more than gavin just saying👅🗣
J'ai fait l'expérience avec madame amrane experience exeptionnelle
sorry i dont speak croisant
merci pour la vidéo cadeau pouce bleu XD
✨ cHeMiStRy✨
Anyone from കേരള ❤️
Wouaw, it's magic
No, wow it's science "i just had to say it"
Holy sh..
So directly from gas to solid, no liquid state at all. F*** me
who else is here because of school science
Thanx
*Nilation of iodine
Yo I am just studying right now
Aric Light