Absolute Zero

To see all my Chemistry videos, check out
socratic.org/chemistry
Absolute zero is the coldest possible temperature. We'll look at how to find absolute zero with temperature and volume, and how it relates to the Kelvin temperature scale. We use absolute zero with Charles Law and gases for physics and chemistry.

[@AJddfx]

you're so very proud of your little pun in the beginning and I found that hilarious. You're a great teacher man. I've been struggling in chemistry and your videos really help me out. Thanks man!

[@thomasafrica9724]

Daaaamn this brings back memories. I used to watch your vids when I was in high-school

[@tdewitt451]

Did you know that I'm working with a magic balloon?

[@Logan-dw5pq]

IKR TYLER ;)

[@realworld2353]

Really 🤔🤔🤔🤔

[@thinginground5179]

Don’t know if I can believe you there

[@sharifgamal9018]

Eight years and still helpful thank u for making this great explaining ❤️

[@neiltodd4951]

I'm a secondary school teacher in the UK. Your videos are great - accessible, clearly explained and interesting. I use them a lot and my students really like them. Thank you - you're doing a great job!

[@andrewdecker9031]

Did u hear about the guy who was frozen to absolute zero? Well I heard he's 0k now.

[@naveensundar4765]

goddamit

[@notJ4K3_]

no

[@Jero-gt9uu]

Whyyyyyyyyy

[@KristinHTF]

Good Pun!

[@flow-lz5jy]

Nice

[@tdewitt451]

so at absolute zero, the gas inside a balloon would have zero volume, the air wouldn't take up any space, so it would be like the balloon didn't have any air in it. if a balloon doesn't have air in it, we don't say that the balloon doesn't exist, we just say that the balloon isn't inflated, that the air inside isn't taking up any space.

[@realdarcia2354]

Im not sure if this is a dumb question but what if we cooled down a solid like iron. The volume wouldnt hit zero so we could keep cooling it?

[@itsme-qg3yp]

Will it be converted into liquid inside the baloon???

[@annamedhurst7515]

How are these 11years old and still the best chemistry videos on KZbin?!? 😂

[@kanpitcharakwong4443]

Thank you so much! I've been falling asleep watching other explanation vdos for this topic! (forcing myself to study and understand, and it just didn't make sense to me until thiss) You really pull this out very interesting!!!

[@tdewitt451]

@rafaeldelaflor good question. did you notice that i'm using a magic balloon that doesn't burst at high temperature? also, the mass of the molecules doesn't change when it gets to absolute zero. absolute zero is a "theoretical concept," an idea that scientists think about. if you actually got it that cold, the gas would still take up a little volume because of the size of the molecules.

[@shreenidhhi8633]

I didn't understand anything at class and this cleared it all! thank you.

[@marlonangeles3085]

Gases has mass, so it is matter. At absolute zero, theoretically, all matter would be in solid phase... gases are so tiny that could take up a lot of space at room temperature, but it doesn't mean that it has no volume when it become solid at absolute zero... Probably, the Jupiter would dramatically shrink as small as the Earth's moon.

[@sumanjaiswal4956]

I have the same concept, gas cannot have 0 volume at absolute zero,it might decrease but it might never go to zero,because 0 volume means no matter and how can matter vanish into thin air? Thanks!

[@shahzbrohi8141]

Tyler! can you please make some videos on Molecular Orbital Theory and Valence Bond Theory...would be thankful to you.. :)

[@krisztiracz4768]

Very helpful!! ACING this presentasion

[@cottagecore8780]

i love all your videos Tyler & i love you

[@EvilTim1911]

Depends what you consider "solid". Matter that has been cooled down to almost absolute zero is actually hard to store at that temperature because it tends to pass through the matter holding it. It easily "slips" through solid glass because the cooled down molecules move so little that they don't collide with the glass molecules that much.

[@cotrexgocotrexgo827]

Beside good way of teaching, I also love the rich vocabulary you use. ''Extrapolation,'' I remember you as long as I use 'extrapolation.'

[@turincio18]

This was great, needed to write a paper on the history of absolute zero which was kind of hard to do until I understood absolute zero. :)

[@kalsoomali1515]

Who needs tuition classes after watching your videos ? .. Just awesome ❤ Thank you so much! It's really Very helpful ..

[@sherazkhan2802]

Conor Colburn Why what's wrong with her English?

[@k8k8slider]

hi! how did you get the number that you plotted in your graph?

[@jeffreyjhouser]

Really cute but informative video. Thanks!

[@paulinahambata3271]

Your vids are absolutely comprehensible.. Physics just became a little less complicated.

[@osamaali2947]

Explained it perfectly 👍

[@persiangulfcat]

Thank you so much!

[@tdewitt451]

Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.

[@mammamialetmego1794]

Please come back and start making more videos

[@flow-lz5jy]

Thank you for this !

[@prajwalita-1595]

Thanks u sir.. Love to ur teaching from India🇮🇳

[@trinisty]

You just gain a new subscriber! :)

[@gowtham5168]

Awesome explanation....

[@aparnasagar4316]

Aaah..!! Love the expressions that you make while introducing ABSOLUTE ZERO !! :* ILU..!!

[@hamzmuhammad6974]

thanks bro it helped me

[@aryehyeres8654]

I was looking all over for this exact kind of video

[@blueocean3349]

Please make more video they help me lot

[@legitimate_kangaroo]

beautiful video

[@zacj9899]

Thank you Mr. Rogers!.. I mean Tyler!

[@Neurocyborg]

Very interesting lesson. I like the fact that you can not only make it interesting - but also funny at the same time (magic baloon). Thank you for inspiring and teaching ^^

[@thesapiens5479]

Very helpful,

[@ashleyshoyamato1878]

Thanks a lot!! helped me do my Project and thanks for making me Pass!!

[@angelh2500]

Thank you soo much

[@AnnTheDirector]

is there an opposite of absolute zero? thanks for making these videos!!

[@silentkiller660]

Thanks teacher for making it a piece of cake for me .. 😊😊😊

[@emaduddin1212]

Thanks man!

[@DJOKERZAxE]

Thanks Alot ...

[@thomasolson7447]

Slope is [L]^3/E? The slope of He is 7/25. I'm wondering about other nobel gasses.

[@spell-bindingdesigns7395]

Thank you… I never understood it till now.

[@prabhatus]

So theoretically if you freeze material to absolute zero, it will be volume less, thus massless, thus you can propel it at light speed.

[@sherazkhan2802]

Why is O Kelvin the coldest temperature possible ? They say , because at that temperature the volume of gas would be zero so it means it would have changed into liquid till that temperature than we could make the liquid further colder than that. why are we only concerned with gases???

[@jannatzeeshan9769]

-273C is the lowest possible temperature which would have been achieved if the substance remains in the gaseous state , but actually all gases convert into liquids above this temperature. Also, according to the video all particle motion would stop at absolute zero which means there will be zero volume of a gas at this temperature, but for a real gas zero volume is impossible (obviously) which shows that this temperature cannot be attained for a real gas.

[@jyotikukreja2533]

you helped me paass Ty bro

[@laibaahmad5366]

My fav teacher♥♥😭😭😭

[@austinbitzer9638]

So, I am definitely not a Quantum Mechanics Scientist. But I do know that if something is cold heat flows from other objects into that cold object to reach an equilibrium type deal. Wouldn't it be impossible to reach absolute zero since there will always be objects around to transfer heat into that specific area/object

[@kh.mominurrahman9672]

So helpful....

[@saihemanthpetluri331]

So the people living near ploes have less volume when compared to the people living near equator..

[@Bluewaves123]

Watching 2 hours before exam 😏 Thanks for explaining in this easy way

[@noorsahar9212]

Very nice ..

[@Bless-the-Name]

So... if we take, say, a gas giant like Jupiter and freeze the gas to absolute zero it would vanish?

[@irin42]

magic baloon!! lol!! anywaz ur awesme.. tanQ 4 makin tes easier to study.. do u hav chemistry videos?

[@thermrm]

THANK YOU IM SO HAPPY AND I LOVE SCIENCE AND I JUST LOVE THE PROCESS OF UNDERSTANDING WHICH WAS POSSIBLE NOW BECAUSE OF THIS AMAZING EXPLANATION

[@sumanjaiswal4956]

So,if you have gotten a doubt like I had, then read it full. So a gas has zero volume at absolute zero but it's theoretical and practically volume can only be zero is there is no matter or mass and gas has mass,so a gas having some mass is at -272 c is not going to vanish at -272 c . Practically at absolute zero a gas does not have any motion of it's particles. But you still might be thinking if gas does not has 0 volume at absolute zero,then why they say there is 0 volume because concept of absolute zero is derived from Charles law and this law is only applicable on gasses at after a certain temp all gasses turn into liquids and solids and Charles law is not applicable on them and we cannot find the volume of a solid or liquid from Charles law so it says "the gas has zero volume" and that's correct but" there is some liquid and solid in place of it which has some volume.

[@sumanjaiswal4956]

Theory that any gas at absolute zero does not have any volume is theoritical and practically only the motion of the gas particles stops,because no matter can vanish in thin air,isn't it? Please correct me if I am wrong,I might gather some knowledge.

[@carultch]

If you extrapolate the ideal gas law, yes. However, very few (if any) substances would remain in the gas phase if you brought them down to absolute zero.

[@constancembulo596]

incredible

[@huzaifanihal129]

Amazing😍

[@mxhamedxx]

thank you so so so so so so much ❤️❤️❤️❤️❤️

[@natur6132]

You are awesome

[@lilithasotondoshe8226]

perfectly explained

[@zohaibhassan485]

thank you

[@minibiju2072]

sir please give more about Kelvin scale

[@apurvmj]

So if we cool one ton of gas it will not have any volume? Where do all the atoms go?

[@DeityLumi]

You are the best.

[@piyushkumarsingh0694]

DeityLumi love RIAS.

[@Daud431]

what if we can achieve black holes with negative volume o.o

[@habibshahquetta]

nice reply sir

[@pwn0x80]

Awesome

[@baletzzie9345]

its true you should also read about nebulla boomerang

[@itsme-qg3yp]

I am seeing in 2020..thankss a lot

[@biraciallove]

is there a connection between absolute zero and the dark matter in the universe

[@hamzaal-sayyad2497]

Would gravity work on the particles of gas at absolute zero?

[@carultch]

Yes.

[@hukanamatata7359]

Thumbs up!!

[@madalixful]

U are amazing Tyler wow, thanks for sharing knowledge ❤️ U are so cute btw

[@1996sagark]

dude you re awesome haha

[@sohailrasool668]

Should we not draw the graph in 2nd quadrant? Temperature will be negative there.....

[@carultch]

The Celsius temperature would be negative, but the Kelvin temperature can never be negative. There is nothing special about zero Celsius that makes temperatures below it, behave any differently by virtue of being negative. It is an arbitrary zero point we assign using water as a reference. The Kelvin temperature is more fundamental, and its zero point matters a lot more.

[@somiakhan9373]

impressed

[@IITian_shubham_shekhar_rajput]

If they don't move at all ...they are violating the Heisenberg's uncertainty principle bec then I can tell its momentum and position simultaneously.

[@Hira-hh9zt]

But they say they have achieved negative temperature means LOWER than 0K,........um....what does this mean? They attained the temperature lower than the possible temperature!?!....Can you please explain it? Thank You.

[@stxnw]

Hira Khan uh no. No one has ever gone lower than 0 Kelvin. Whatever you are reading is probably the Bible. Just stop.

[@nathangrant1824]

you can have temperature which are negative degrees kelvin but they are not colder than absolute zero... they are hotter. search for 'negative kelvin' on youtube and you will find some good videos explaining this phenomenon.

[@sumanthababoolal4710]

So everything has to be liquidated at +273c

[@shubhankarshukla8317]

Thanx

[@kirstyokumu8725]

Thanks for this my physics teacher shames me and makes fun of me for not understanding but know I understand thanks alot

[@avidwivedi840]

When you say Volume, Do you mean Avg. Kinetic Enery? Otherwise even 0 Volume doesn't make sense.

[@Logan-dw5pq]

"While watching this vid for the 1 st time , I was in 10 th standard ...already finished the topic the year b4 but I just realized it could have been even better if I had watched it back then" Today I m studying Astrosciences in one of the most reputed colleges in the world

[@hamzaghazi]

and im gonna fail and be the janitor in one of the most reputed colleges in the world

[@royrand]

Hey,.how come magic??

[@granadaza]

How does real gases behave? Doesn't the gas in the ballon will become vapor, an time after it will become liquid? The melting temperature for hydrogen is -259. So its pretty simple for me to undestand the math concept, but the physics gets out of my mind. I beg your pardon for my english im from Colombia.

Man, he went against hisenberg like already in the beginning

[@michaelferrell7924]

wait did I miss that, I didn't think Tyler was selling meth in New Mexico. Ahh man he better watch out last guys who sold on Hisenbergs turf got fucked up. gonna miss his videos

[@caterinadelgalles8783]

Tyler DeWitt and his Magic Balloon!

[@liljlavaman6245]

I like the magic balloon.

[@Scottslover1]

@managarm1349 That doesn't mean it isn't possible though :)

[@rafaeldelaflor]

The molecules have absolutely no mass at absolute zero? How can it have no volume when it has mass? And if your balloon would blow up way before 200

[@chandanrajak2042]

Love from India...🎉❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

[@abhishekmane5955]

👍👍

[@fdhadi]

u know what? at ab-zer0 the gas would lose it is gas- specification, and turn into a non floating dust like particles,,, in the case of gas the space between particles is huge,, due to kinetic energy,,when it is ab-zer0 it is a game changer...

[@bakhitamaryam]

If having a negative volume for a gas is so ridiculous, isn't having a zero volume as ridiculous?

[@hossamtarek2089]

how volume can be zero? donnot understand well

[@carultch]

It's a point where the equation is non-physical, and doesn't reflect reality. The substance would have to still be gaseous, otherwise the equation wouldn't be valid in the first place. Few (if any) substances are gaseous anywhere close to absolute zero.

[@jebusyoon8405]

Then what is negative temperature.

[@carultch]

Negative temperatures only exist for temperatures in relative scales like Celsius and Fahrenheit. And it just means a temperature below the temperature we arbitrarily assigned as zero, for these scales. In the case of Celsius, water's phase changes are used as a reference, so that just means a temperature where in 1 atmosphere of pressure, that the water would be solid. Negative Kelvin temperature doesn't exist. The closest we've ever achieved to it, the last time I checked, is 100 picokelvin.