The Kinetic Molecular Theory of Gas (part 1)

Published on July 16, 2008 by

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Reviews kinetic energy and phases of matter, and explains the kinetic-molecular theory of gases.

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  • bijesh795 14 years ago

    i wish u were my professor….thanks

  • Ben Vincent 14 years ago


  • Ash N 14 years ago

    thnxu sOo much 4 posting the video!!
    I wish u were my chemistry teacher … 🙂 ..
    excellent wrk .. 🙂 .. now I dont have to read 6 pages of my textbook .. :):)

  • ROSIE DAY 14 years ago


  • Andrea Peña-Vasquez 13 years ago

    i must agree. haha, if u were a gas, you’d be faster than the speed of light 8)
    and the video was very helpful!

  • Tyler DeWitt 13 years ago

    ha! i’m waiting for you to make that one.

  • Tyler DeWitt 13 years ago

    i hope to get one up here soon. but in the mean time, feel free to message me if you have questions. i appreciate your kind comments–they mean a lot!

  • Neil Wacaster 13 years ago

    This is really good!!

  • hanbyel kim 12 years ago

    Hey!!! you are the most amazing teacher!! Thank you so much and it was a lot of help. Thanks!!! Thanks!!

  • Tyler DeWitt 12 years ago

    @sfincher100 congratulations! i’m so happy to hear that!

  • heymarthajones 12 years ago

    Really helpful, thanks, gcse physics just got a lot better 😀 <3

  • managarm1349 12 years ago

    really like the layout of your vids, very well done

  • Mia Bailey 11 years ago

    Thank you for your videos! Studying for chem is a lot easier when you understand what’s going on and you’ve explained it so well!! HUG N KISSES!!

  • Julia Jacobs 11 years ago

    you’re a fabulous teacher!!!

  • alnessarhea repollo 11 years ago

    i admire you so much..

  • Bronwyn Bodnar 10 years ago

    “a lot scarier then it sounds” Nice wording

  • 1996sagark 10 years ago

    you re the man!
    And my professor is a woman!
    Hell yeah!

  • Phaseme0810 10 years ago

    is this the guy who killed me in the batman movie? <3

  • Dave Yen 10 years ago

    2:31 Doesn’t the KMT assume that the particles don’t collide with one another? It says here ‘Particles don’t exert a force on one another.’ Doesn’t this mean they don’t collide? A collision involves dp/dt=F, which means a force is exerted in any collision.

  • Dave Yen 10 years ago

    Oh nevermind. I got it.

  • Eng smiley 10 years ago

    totally amazing ^_^
    i love your works toooo much ..
    god bless you
    thank you ^_^

  • Christina Kresge 10 years ago

    love you! Thank you!!!

  • Dominic Baratta 10 years ago

    You are a great teacher. Explaining things in a way my college professor just can’t accomplish. Thank you so much please keep it up!

  • Alan M 10 years ago

    I have a question, if gasses bounce around in a container and their collisions are elastic, then can this behavior also be true for solids and liquids too? Although the only difference I see is that liquids and solids are held together by molecular forces- is this correct? Else would they too (liquids and solids) be freely bouncing in a container?

  • kamatmehbro 10 years ago

    your passion, communication, drive and patience to name a few things makes you the ideal teacher, someone whom both current and future generations of teachers should aspire to become. Thank you for everything you do! there isn’t a single person who has watched even a second of your videos who did not leave having gained from your videos 🙂

  • Sanjeev Kumar Pugazhendhi 10 years ago

    wish i had teachers like this at school… think you are doing a great job mr dewitt, please keep it up. and I want to ask whether I can get permission to download your videos and teach some children using ’em…

  • HIGH FIVE 9 years ago

    An important clarification: in a collision, kinetic energy becomes a different kind of energy (rather than disappearing). Like matter, energy must be conserved.

    Thank you for the video, it was super helpful.

  • charlie vasquez 9 years ago

    really helpful. the two balls of slime just go blegh aha

  • Tyler DeWitt 9 years ago


  • Jack Whyte 9 years ago

    Tyler, I’m taking my chemistry final exam in a few days. This video is INCREDIBLY helpful, thank you so much! You did an awesome job.

  • Glennyyy 9 years ago

    This video was so helpful I regret going to a tutor lol

  • Peeti Browne 9 years ago

    thanks alot

  • ibensince96 9 years ago

    The fact that some people(usually 1or 2) dislike your videos is a JOCK. God bless you bro.

  • DarthConnis 9 years ago

    At 0:18, did you mean, “Sounds a lot scarier than it is”?

    • Random Internet Profile 7 years ago

      no, because at the atomic level, there’s some pretty scary shit going on, which makes it scarier than it sounds.

  • LadySov109 9 years ago

    Oh so the KMT is a lot scarier than it sounds. 


    I’ve been searching… I can not seem to find information on specific gasses. Just general information. In a nut shell this is my question. If I put 500ml of liquid (nitrogen or hydrogen or oxygen) in a 40 Cu/ft. gas cylinder and allowed it to warm up to 22.2°C , how much pressure would be in the cylinder? Where can I find the base information to do the calculations?

    • jeepien 9 years ago

      Well, since liquid nitrogen is a liquid, there really is no appropriate “gas” law that covers it.

    • MrTHEORIGINALICEMAN 9 years ago

      Nonsense, or perhaps you do not understand the question. Water is a liquid, heated it becomes a gas (steam) that creates pressure. one gallon of water in a 5 gallon container heated to 360° will produce 160psi. Liquid nitrogen heated becomes a gas… 

  • Rohit Raj Wadhwani 8 years ago

    I have been watching your videos from 6 months and you know these make great sense and helpful so thank you for these videos

  • Samuel Tibbitts 8 years ago

    0:20 …which is a lot scarier than it sounds…

    Kinetic molecular gas theory, don’t mess with it.

    • Alexander Valencia 8 years ago

      Too funny

  • Sharmi J 8 years ago

    thnx tyler it helps a lot 🙂

  • Parker Leigh 8 years ago

    A lot scarier than it sounds lol

    • Alexander Valencia 8 years ago


    • Brandon S 5 years ago

      Thats how I feel about all chemistry xd

    • Andrew Gulick 5 years ago

      A lot of things can sound scary, especially if your camping out in the woods by yourself.

  • Hamdi 8 years ago

    Go to “kinetic molecular theory of gasses” on khanacadamymedicine channel, you will see a more explained way with actual numbers.

    • Random Internet Profile 7 years ago

      I watch those videos a lot. that one guy gets too ahead of himself sometimes and starts skipping around, confusing himself. kinds funny though.

  • Mercedes Malone 7 years ago

    You’re amazing please create more videos. I am a huge fan and subscribed. You are very good at explaining things. 🙂

    • muxaffar ally 4 years ago

      Mercedes Malone lol

  • Taeshawndretta Brown 7 years ago

    How the hell did you record this????

    • MYDOLOGY. 7 years ago

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  • Kathy's_picks77 7 years ago

    Ideal teacher is even harder to find.

    • angeccs cs 3 years ago

      yet here he is

  • Wallen Mate 7 years ago

    nice topic to learn

  • utopian intallect 7 years ago

    cant hear

    • Anika Smart 5 years ago

      yes we can’t. Is there anyway to increase the volume on the sound?

    • Sumaiya Ahmed 3 years ago

      use headphones

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    Here we see a younger Tyler, still extremely helpful but not in as good of video quality as now.

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    *Trying to learn something for a test tomorrow* Goddamn science teacher.

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  • Mohamed Abdinasser 6 years ago

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    thanks a lot

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    • Ashu Rastogi 6 years ago


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  • Alvin Halim 6 years ago

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  • Random User. 6 years ago

    i wish if u were a teacher in the university i study in!

    • Random User. 6 years ago

      WAKEISLAND99 it’s in uae 💔 so that’s impossible

    • MAPLETHELEAF 6 years ago

      @WaFa Ali I live there too! Sharjah.

    • Random User. 6 years ago

      WAKEISLAND99 n what should i do with the place u live? ur not tayler

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    • Random User. 6 years ago

      WAKEISLAND99 idk a number appeared .. but whatever this isn’t a way to make a conversation

  • kiara kashyap 6 years ago

    the best ever explanations…thank you sir

  • laura tink 6 years ago


  • lasse skarpengland 6 years ago

    “Which is a lot scarier than it sounds”

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    One of the most underrated educational channels ever. Keep it up

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  • Saptarshi Sahoo 5 years ago

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  • govind samy 5 years ago

    it was really a dazzing video tyler…u r really helpful a lot….but I am searching for ur videos particularly on chemical kinetics wholly…but i couldn’t get it…can u plz help me?…I am preparing fr an entrance scam…that’s y

  • Petra 5 years ago

    8:30 – WATER IS POLAR. that’s all i remember from class…

  • Asritha Rox 5 years ago

    thanks your videos helped me pass grade 11 chemistry. they are very helpful 👌

  • nagu nanju 5 years ago

    Very good explaination sir thank you so much

  • ShatteredStarz 5 years ago

    Ideal Teacher

  • Aathmika Krishna 5 years ago

    you are so freakin awesome i love the way you explain things so thoroughly

  • d ́buC 5 years ago

    9 yrs later…………………… technology is so blurry lol

  • ctvtyvyybyvy gbygtg 4 years ago

    Do you still alive 🧐🧐

  • Prateek Senapati 4 years ago

    Thank you Tyler!!!!!! This was my favourite in the ‘Gas’ unit. No one could have explained it better 😊

  • Sammi 4 years ago


  • RAMU SP EERLA 4 years ago

    Hi sir I need grahms law of diffusion and effusion sir …..and like ur videos

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  • DoofusConvention 4 years ago

    0:20 That doesn’t make me feel better 😂

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  • SAND 4 years ago

    Where is the sound

  • Monika Sachdeva 4 years ago

    really bad

  • Christian Zantua 4 years ago

    do you alive

  • Susan Fang 4 years ago


  • Susan Fang 4 years ago

    shows the kinetic molecular theory

  • kai ye 3 years ago

    Are you still making video ? You’re a great teacher . Your video absolutely helped a lot of people. I love the way you explain hard concept, your unique way to explain chemistry make chemistry so much easier!

  • Mohammad Munzurul Haque 3 years ago

    Helping out since 2007. It feels sad to see still under 1m subscribers…. But Best wishes Mr. DeWitt. Honor.

  • cody vautour 3 years ago

    youve helped me so much with chemistry man haha im passing chemistry because of u

  • Sugam Tyco 3 years ago

    Thankyou man

  • Asrat Mengesha 3 years ago

    Water pressure, gas pressure, air pressure…..X-body pressure… Well, which way is the direction of such pressures, what is the effect of all pressures on pressure receivers???//

  • Asrat Mengesha 3 years ago

    Which way is gas moving to have a kinetic force or energy? which way is acting the force of gas or gas pressure?

  • ANANYA EERAVENI 3 years ago

    you are literally so amazing and you explain stuff in such a way that just CLICKS with me–I love you!!!!

  • Hanah Eviota 3 years ago

    better than my chem teacher hoo

  • Sohail Ahmad 3 years ago

    Nice handwriting 😉

  • Wespuchchi Nasarawo 3 years ago

    this man is a fking legend even in 2019

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    • ᴍᴀʀɪᴀɴᴇʟᴀ sᴜᴀʀᴇᴢ. 3 years ago

      Even in 2020

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  • Shardulovania 2.0 3 years ago

    Tyler DeWitt- Getting me through my Chem exams since 2018

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  • Natalia Sevilla 2 years ago

    Is there something wrong with the volume in this video -_- I’ve raised my volume all the way up and I can barely hear you…

  • M S 2 years ago

    u said its scarier than it sounds, bruh…

  • Kepler180 2 years ago

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  • Prasanth Meesala 2 years ago

    There is always a smile on my face when I search a lecture and I see Tyler on the page

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