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Chemist Answers Chemistry Questions From Twitter | Tech Support | WIRED

Scientist and author Kate Biberdorf (perhaps better known as Kate The Chemist), answers the internet’s burning questions about chemistry. Why does Diet Coke and Mentos make a chemical reaction? Do brains really have chemicals inside them? What do electrolytes even do? Kate answers all these questions and much more! Still haven’t subscribed to WIRED on…

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Scientist and author Kate Biberdorf (perhaps better known as Kate The Chemist), answers the internet’s burning questions about chemistry. Why does Diet Coke and Mentos make a chemical reaction? Do brains really have chemicals inside them? What do electrolytes even do? Kate answers all these questions and much more!

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148 Comments

  1. Iva 💖 𝐹**СК МЕ - СНЕ𝒞𝒦 𝑀𝒴 Р𝑅𝟢𝐹𝐼𝐿Е 🔞

    May 19, 2022 at 10:14 pm

    She needs to rewrite all the textbooks, her analogies make sense

  2. Francesco Adinolfi

    May 19, 2022 at 10:20 pm

    Chemistry doesn’t exist, it’s all physics :p

  3. Hammas Haukka

    May 19, 2022 at 10:27 pm

    First question is wrong.

    Our universe has a lot of empty space where literally nothing is there, not even atoms.

    But what is universal is physics.

    So is the universe all chemistry? No.
    Is all of the universe physics? Yes.

  4. Eduardo Walcacer

    May 19, 2022 at 10:28 pm

    As a chemist, this was a very difficult video to watch. All answers were based on high school chemistry knowledge. Do Americans skip their chemistry classes?

    Also, the lava lamp answer was wrong. They are composed of wax (solid at room temp and liquid when heated), kerosene, polyethylene glycol and water. The movement is only possible because of a heat source.

    Regarding everything being made of chemicals (matter), possibly only 15% of the universe is chemistry. The rest is dark matter and we still lack the knowledge to explain it.

    • Néstor S.

      May 20, 2022 at 12:34 am

      She also replied wrongly to a question. The person said “if atoms are mostly empty, why can’t we pass our hands through materials”. She replied about the nuclei being dense so we can never touch the nuclei. She didn’t answer at all.

  5. Group Three

    May 19, 2022 at 10:33 pm

    At 1:57 she taps the table and the pink glasses on bottom right fall off the book. You can get an idea of which questions came first and how the video was edited based on that.
    Random but I thought it was interesting.

  6. Tara

    May 19, 2022 at 10:43 pm

    rip PJ’s verification tick, also did you just happen across his tweet and decide to use it in the video??

  7. Lesli 🔥 I WANT SЕХ 💋 F Uc_k me

    May 19, 2022 at 10:52 pm

    She needs to rewrite all the textbooks, her analogies make sense

  8. Danapher

    May 19, 2022 at 10:53 pm

    1:56 spooked me

  9. e snm

    May 19, 2022 at 10:56 pm

    I wish my chemistry teacher was this nice… Maybe I would have ended up liking the class instead of being traumatized by it ;-;

  10. ATGG

    May 19, 2022 at 11:04 pm

    Her hands are red…. Chemists and Lab Rats know what I’m talking about…

  11. Seanmufc89

    May 19, 2022 at 11:12 pm

    We don’t need to shove our hormones into someone else to make them attracted to us.

    Me: interesting

  12. aaron lloyd

    May 19, 2022 at 11:23 pm

    that was great, thx for the vid!!

  13. MrGorillaFlavour

    May 19, 2022 at 11:26 pm

    Is it just me or do the first few questions sound like its been written by a primary sch kid

  14. June🍆𝗙**𝗖𝗞 Me! Check 𝗠𝘆 𝗣𝗿𝗼𝗳𝗶le💋

    May 19, 2022 at 11:30 pm

    this is absolutely the first time kickthepj has ever been featured in a youtube video. congrats to kickthepj for making it onto youtube!!

  15. Dame Anvil

    May 19, 2022 at 11:37 pm

    ”My name is Doctor”. Talking about an ego too big for the studio.

  16. Izabel Esther

    May 19, 2022 at 11:39 pm

    Caitlin Snow??????????

  17. AuroraFirestorm

    May 19, 2022 at 11:48 pm

    Wait a second. The reason that you can’t pass your hand through a solid object, is because the electrons in the atoms in your hand repel the electrons in the atoms in the object. Nuclei take up basically no space, they’re not big, except in the really enormous lab-made elements, so what is this thing about smacking into nuclei?

    • Stormix Gaming

      May 20, 2022 at 1:07 am

      Yeah completely blindsided by this as well, as soon as the question was asked I was expecting the electrostatic force as the response, needless to say I was very surprised at the explanation and I’m currently somewhat skeptical of it. Naturally most things in these explainers have to necessarily be over simplified, but I can’t find a way to make the two compatible.

  18. Minerva Manuel

    May 20, 2022 at 12:00 am

    LMAO PJ what did you do

  19. Dana🍆𝗙**𝗖𝗞 Me! Check 𝗠𝘆 𝗣𝗿𝗼𝗳𝗶le💋

    May 20, 2022 at 12:09 am

    It’s a rare person who can explain a specialist field to a lay crowd so effectively and with such passion. If I’d had a science teacher like you at any point in school, it would for sure have influenced my level of interest and potential future career path. Thank you for doing what you do and helping the rest of us understand chemistry a bit better.

  20. Néstor S.

    May 20, 2022 at 12:15 am

    Finally something up my ally. Chemist here, enjoying this. Also you can break a bond between atoms just by giving them enough energy.

  21. RyH10

    May 20, 2022 at 12:27 am

    Okay I love how humble she is. Like she doesn’t come off as contemptuous at all. She uses good analogies that don’t compromise on her explanations yet gets through to the average person

  22. Naomi McIlvaine

    May 20, 2022 at 12:37 am

    Wow. First time chemistry didn’t make me cry

  23. Hunter Malhotra

    May 20, 2022 at 12:45 am

    The question at 2:32 about the brain just made me lose brain cells. Smh.

  24. Mattieu Leveille

    May 20, 2022 at 1:01 am

    I feel dumber. Who talks like this?

  25. N U A L L A

    May 20, 2022 at 1:15 am

    i love her 😭😭😭

  26. Okami

    May 20, 2022 at 12:31 pm

    She is doing a good thing in terms of science communication…even though some things are not correct… The thing I dont understand is why her way of talking makes me angry haha It seems so fake and I despise it 🙈🤣

  27. Set-Tes

    May 20, 2022 at 12:56 pm

    My ex told me we were like hypobromic acid (if I remember correctly) and that we matched for sure but eventually we disolved in search of stability, idk if his analogy was scientifically accurate but I found it fitting

  28. Alex Ireland

    May 20, 2022 at 1:03 pm

    The reason your hand doesnt pass through objects is not because of the density of the nuclei. Its because of the pauli exclusion principal. 🙁

  29. ainnothin

    May 20, 2022 at 1:10 pm

    These questions are pathetic. Were they written by 8 year olds?

  30. sheldon cooper

    May 20, 2022 at 1:33 pm

    Just by listen to her. It makes me want to learn chemistry

  31. Lauren-_ T[A]P Me!! To Have [S]EX💞 With Me🔞

    May 20, 2022 at 1:43 pm

    Dr. Biberdorf is a fantastic explainer. I would love to hear her give a talk/lecture.

  32. Syamidzar Dzaky Ramadhan

    May 20, 2022 at 2:36 pm

    I demand part two! She is super fun OMG!!!!!

  33. Wario

    May 20, 2022 at 2:38 pm

    Wow who is this pj dude? He should make a YouTube channel…

  34. Giorgos Coacola

    May 20, 2022 at 2:39 pm

    I love her

  35. Spoinkable

    May 20, 2022 at 2:52 pm

    So the reason I’m not getting any is that I need to high five more. Plenty of winking, but not enough high fives.

  36. CHERRY-🔞T[A]P Me!! to Have [𝐒]𝐄𝐗 With 𝐌𝐞

    May 20, 2022 at 3:21 pm

    She needs to rewrite all the textbooks, her analogies make sense

  37. petros baliouskas

    May 20, 2022 at 3:51 pm

    BRING HER BACK

  38. Affen Tat

    May 20, 2022 at 4:38 pm

    love her bubbly energy 😄

  39. Cottonheaded Ninnymuggins

    May 20, 2022 at 5:35 pm

    Chemistry is fancy physics. Biology is fancy chemistry. It’s all built on top of physics.

    • Kurt Eisner

      May 20, 2022 at 7:49 pm

      You misspelled mathematics

  40. JR

    May 20, 2022 at 5:46 pm

    I like her enthusiasm!

  41. Mark Lee

    May 20, 2022 at 5:55 pm

    1:56 — Haha, those glasses!

  42. Pinkie Penguin

    May 20, 2022 at 6:19 pm

    I wish she was my chemistry teacher at college, I would’ve made better grades.

  43. RRAD

    May 20, 2022 at 7:34 pm

    Such passion. I love it.

  44. CLOUD

    May 20, 2022 at 8:08 pm

    Biberdorf

  45. Leigh Anne R

    May 20, 2022 at 8:35 pm

    She makes me want to go back to college again and take chem and o-chem over again. Almost…

  46. Nishant Sinha

    May 20, 2022 at 9:12 pm

    The thumbnail of this video is different everytime i see it

  47. feeling-dizzie

    May 20, 2022 at 10:03 pm

    Whoever typed out those tweet summaries did kind of a terrible job. “boiling happens at 100 degrees celsius while evaporation can happen at any temperature” — no duh, that’s not the answer to the question and it’s not the key point of her full answer!

  48. Kevin Guimond

    May 20, 2022 at 10:56 pm

    I hated, and I mean hated, chemistry in high school. These questions are so good and interesting to see answered, and this chemist is so good at answering them.

  49. I. Wetpaint

    May 21, 2022 at 12:10 am

    This is one of the best Youtube videos I’ ve ever watched. Learned way more than in high school chemistry.

  50. borednow

    May 21, 2022 at 2:24 am

    everybody is talking about how she is such a good teacher but most of it was just plain wrong… no i dont just mean oversimplified for a lay audience but just wrong!!! just because she is energetic in that typical fake overthetop hyper youtuber way doesnt mean she is a good teacher

    • RyH10

      May 21, 2022 at 2:43 am

      I agree about the passing your hands through the electrons part but I feel like the rest was pretty accurate?!

  51. Anya Perez

    May 21, 2022 at 2:35 am

    i did NOT expect PJ to be here lol

  52. Rodrigo Appendino

    May 21, 2022 at 2:48 am

    12:31 Not always. Depends on the pressure. haha

  53. Jock Warner

    May 21, 2022 at 2:52 am

    Physics >> Chemistry

  54. Rodrigo Appendino

    May 21, 2022 at 2:53 am

    3:59 I don’t remember where, but I heard that it’s because of the Pauli exclusion principle. If that’s true, so you can’t pass through the electrons, right?

  55. Shawny Boo

    May 21, 2022 at 3:08 am

    Okay. I need her energy & enthusiasm

  56. meabby

    May 21, 2022 at 7:14 am

    I love how she used Ryan Reynolds and Blake Lively as an example

  57. ScrapeTV

    May 21, 2022 at 11:34 am

    Silly, everyone knows what electrolytes are, they’re what plants crave

  58. Chazertron Fivethousand

    May 21, 2022 at 1:25 pm

    Science is awesome.

  59. ARYA MAITRA

    May 21, 2022 at 4:22 pm

    If we apply heat, a bond breaks, and being attracted to other atoms isn’t really an insightful answer.

  60. Maknae

    May 21, 2022 at 4:44 pm

    4:10

  61. Crawford

    May 21, 2022 at 5:08 pm

    u made it to the big leagues kicky pj

  62. Alex Tran

    May 21, 2022 at 5:20 pm

    Hey that’s my chem professor at UT

  63. turbo and oobnar fan

    May 21, 2022 at 6:37 pm

    we need a joe locke, or any heartstopper cast, autcomplete or smth

  64. Dedu Tedy

    May 21, 2022 at 6:56 pm

    She is amaazing 🤯

  65. Rodolfo Martínez

    May 21, 2022 at 7:44 pm

    The reason why we can’t pass through each other is not the “incredibly dense nucleus of atoms” it’s the strength of the repulsion of the electromagnetic field of electrons, primarily.

    • fy leo

      May 24, 2022 at 8:18 pm

      Thats right…

    • Erikl

      May 24, 2022 at 8:56 pm

      @fy leo yeah as a chemist myself i have to say that there were some “inaccuracies” and also a defintly false statements like this in this video. I get that its hard to simplify many concepts so that a non-science person understands, but still…

  66. AcidRapper01

    May 21, 2022 at 10:05 pm

    That’s my teacher. And I love her👏🏽👏🏽🤩

  67. Mykasan

    May 22, 2022 at 2:02 am

    brittany murphy is that you?

  68. Mary Rose Kent

    May 22, 2022 at 4:19 am

    I’m really interested in what she has to say, but her voice is just too brutally horrible. LIFT YOUR VOICE UP OUT OF YOUR THROAT!

  69. emonetwothree

    May 22, 2022 at 7:32 am

    Get Dianna (physicsgirl) on here for physics questions!

  70. Ratigan2

    May 22, 2022 at 9:05 am

    She’s half crazy and I love it.

  71. Sean G 137 #NewPhysics

    May 22, 2022 at 9:35 am

    For physicists to truly understand the quantum they have to understand the common sense in Special Relativity and quantum mechanics. Here is Special Relativity explained using classical mechanics and h the harmonic oscillator of quantum mechanics….. 9 min vid with no time wasted on sponsors.

  72. Invox

    May 22, 2022 at 10:50 am

    She’s all perky and fun, and explains everything quite well.
    I like her.

  73. Benjamin Carabajal

    May 22, 2022 at 12:12 pm

    OK, so this was THE test for me: I absolutely despised chemistry in high school and I’m not a fan now. But she really made the topics interesting with her fun analogies, her excited energy and her charm.
    Tech Support is a gem. I swear, every guest is wonderful.

    • Keir McCoy

      May 24, 2022 at 7:06 am

      Absolutely agree. I hated chemistry as well but I could listen to her forever, her enthusiasm is totally infectious!

  74. Nalin Sukhija

    May 22, 2022 at 6:50 pm

    An amazing orator and What a WOMAN! not only she has a great knowledge but also explains everything well with real life examples, best of luck Kate the Chemist.

  75. Luis Michel

    May 22, 2022 at 6:53 pm

    She seemed really happy Egyptians urinated on barley seeds…

  76. defuserable

    May 22, 2022 at 8:38 pm

    What a great teacher!

  77. TDDT

    May 23, 2022 at 12:42 am

    This is what i love about chemistry, the more you learn, the more you realized everything is a huge, huge, huge, chain of reactions.

  78. JAIG

    May 23, 2022 at 1:05 am

    she’s cool

  79. Tony Rosales

    May 23, 2022 at 4:24 am

    So many weird explanations:
    – Energy is needed to break bonds, not some long winded Ryan and Blake analogy that doesn’t even make sense
    – Electrostatic repulsion is responsible for things not passing (see rest of comments)
    – Humans have pheromones that play important roles in how people interact alongside verbal and visual communication

  80. August

    May 23, 2022 at 7:03 am

    Humans dont have pheromones? Tell that to any woman who walks by a man that smells good in the store. Sometimes its not even their cologne, its their scent. So as a woman, I respectfully disagree. Ive also been turned off by a guy’s natural scent even though he looked attractive.

  81. baekook

    May 23, 2022 at 9:57 am

    Time to use these facts as pickup lines

  82. Max Max

    May 23, 2022 at 9:58 am

    The fact that you can’t reach your hand through the table, that any matter is consistent, is due to the Pauli principle…

  83. Magic Beans

    May 23, 2022 at 2:52 pm

    Yes PJ was joking, but you’d be surprised how many people don’t know what chemicals are and assume they’re always dangerous.

  84. Kuya Bala

    May 23, 2022 at 4:59 pm

    when can we have psychology support

  85. T Gordon Mayhall, Jr

    May 24, 2022 at 12:13 am

    Brawndo has electrolytes… it’s what plants crave.

  86. אליאב ברוך

    May 24, 2022 at 12:50 pm

    Listen, LISTEN! I’m in love with her. What great explanations and enthusiasm 🥹

  87. ShyGirl36

    May 24, 2022 at 6:45 pm

    If she was my chemistry teacher I might have enjoyed it

  88. Adrienne Li

    May 24, 2022 at 10:56 pm

    THAT’S MY CHEM PROFESSOR! I love you Dr. B <3

  89. Javier Martos

    May 25, 2022 at 2:22 am

    Off-topic, but the yellow book behind the progress bar makes it seem like this video is an ad lol

  90. Brennan Rodriguez

    May 25, 2022 at 1:55 pm

    slay professor biberdorf!

  91. SmashingOyster

    May 25, 2022 at 3:20 pm

    dr b was my fav gen chem prof tbh

  92. BalletBaryshnikovNureyev

    May 25, 2022 at 7:08 pm

    never been more proud to have had dr. biberdorf as my chem 1 and 2 prof at UT Austin

  93. Danai Kosmopoulou

    May 25, 2022 at 8:48 pm

    Finallyyyyy

  94. Theonlyparadox

    May 25, 2022 at 9:14 pm

    OKAY, so her and Bill Nye the Science Guy make a series about science. I’d learn so much.

  95. Robert Seiler

    May 26, 2022 at 2:46 am

    Yo that’s my chem teacher. Kinda eh

  96. bjd1980

    May 26, 2022 at 7:16 am

    The passing your hand through question Was entered incorrectly. It’s because of the electromagnetic force. The nucleus does not take up a lot of space in an atom it’s very dense yes, but it takes up a very small amount in space

  97. safira

    May 26, 2022 at 1:28 pm

    oh god i frwqking LOVE chemistry

  98. Sam Najian

    May 26, 2022 at 4:18 pm

    4:00 that is super wrong, the only reason you cannot pass objects is the electron cloud around them, they repel each other so you cannot force your hand into things, two nuclei never touch (well they do in headron collider but thats not the case when you touch anything)

  99. Jonathan Matias

    May 26, 2022 at 11:13 pm

    My highschool chemistry teacher taught us about the makings of wine and whiskey and stuff. Shoutouts to Mr.Ferguson

  100. Hy Pailakian

    May 27, 2022 at 2:37 am

    If Kaley Cuoco’s character was one of the geniuses on the Big Bang Theory, she would be played by this woman.

  101. bugs_ bunnie

    May 27, 2022 at 3:40 am

    I thought this was Reese With her spoon

  102. Dallon Perry

    May 27, 2022 at 8:21 am

    As someone with a curious Great Pyrenees, I recommend hydrogen peroxide and baking soda paste for skunk smell!

  103. AbdelMalek Belahbib

    May 27, 2022 at 2:25 pm

    Her excitement and energy is contagious. Glad she’s been brought back!

  104. DJUNGELSKOG

    May 27, 2022 at 6:55 pm

    My condolences to American chemistry students that have to use Fahrenheit

  105. Anthony Wong

    May 27, 2022 at 10:55 pm

    Been saying this since day 1 – Chemistry is the best science

  106. ok buddy

    May 28, 2022 at 11:19 am

    Ive been waiting for this

  107. Jesse Acapulco

    May 28, 2022 at 11:20 am

    The only thing that I don’t like chemistry is Chemical formula.

  108. ultimasurge

    May 28, 2022 at 12:18 pm

    Shes an amazing teacher

  109. Valentin-Razvan Lupu

    May 28, 2022 at 1:47 pm

    the explanation of why a hand can’t pass through a solid object was absolute BS, the real reason is that as you approach your hand towards a solid object 2 things happen:
    1. Electrons are getting closer to other electrons and so there will be an electric repulsive force(look up Coulomb’s law)
    2. The electron clouds(orbitals) are also getting closer and when there would be a non zero probability of electrons being in the same spot you can not get any closer(look up Pauli exclusion principle)

    Now my explanations weren’t 100% thorough and in depth but they are absolutely closer to the truth than “tHe nUcleUs is eXtrAoRdinaRily dEnsE”

  110. The Bushmaster05

    May 28, 2022 at 2:11 pm

    my favourite techt support video so far

  111. Lordess Voldemort

    May 28, 2022 at 3:05 pm

    I thought humans had pheromones. 🤔

  112. Mason Jarboe

    May 28, 2022 at 9:44 pm

    I have never seen this chemist and Drew Barrymore in the same room

  113. ジェイソンJason

    May 30, 2022 at 9:59 am

    Humans don’t produce pheromones 🤔🤔🤔

  114. Hannah Conforti

    May 30, 2022 at 7:27 pm

    You are a Disney chemistry nerd and I love it. Someone so excited by what they do!!

  115. Stevon Robb

    May 30, 2022 at 7:47 pm

    So she saying with enough mentos and coke you could theoretically make a bomb?

  116. MOLPE SIMS

    May 30, 2022 at 7:56 pm

    I wish I had you as a teacher, you can explain chemistry like a genius! I will use your examples when I help kids with chemistry for sure! ♥

  117. Kim loona

    May 31, 2022 at 4:51 am

    I hate chemistry

  118. Gopi Gita

    May 31, 2022 at 8:05 am

    im here for PJ

  119. Shireen Dhar

    May 31, 2022 at 10:47 am

    she gives crazy scientist vibes ngl – in a good way

  120. Porchea Miranda

    May 31, 2022 at 10:56 pm

    4:10 is the pheromone question

  121. No Dont

    June 1, 2022 at 2:19 pm

    dont get me wrong i love her energy but at the same time i can see her as the most scary villan ever. just imagine her as a mad bomber with this kind of energy in any movie.

  122. White Panther

    June 1, 2022 at 4:07 pm

    What would the chemical reaction of me sticking my extension cord in your glory hole be?

  123. Jan Žegklitz

    June 1, 2022 at 10:44 pm

    The explanation regarding passing through an empty space is wrong. The reason are the electromagnetic forces, not nuclei hitting each other.

  124. Tynan Phillips

    June 2, 2022 at 6:06 am

    I just graduated with my Bachelors in Chemistry, and she’s much better at explaining general chemistry theories in an understandable way than most of my professors. 😅

  125. Icekingmen74

    June 2, 2022 at 11:38 am

    I don’t think we care about chemistry stuff

  126. Abby Liu

    June 2, 2022 at 12:33 pm

    why is pj here

  127. ShadowRealmZ

    June 3, 2022 at 4:48 am

    So everything she talking about is made up

  128. Kynk

    June 3, 2022 at 8:42 am

    I think the most dangerous chemical reaction is a super nova or black hole.

  129. The Johtunn Bandit

    June 3, 2022 at 8:03 pm

    Someone needs to introduce Ryan Reynolds to this Chemist, it will be very exothermic. 🙂

  130. Bitter Jade

    June 3, 2022 at 10:59 pm

    Electrolytes are what plants crave

  131. swathi sivaraman

    June 4, 2022 at 6:09 am

    I wish Ryan sees this and uses this example to explain double replacement reaction to his kids!!!!

  132. MÛŠÏÇ Plus

    June 4, 2022 at 9:11 am

    Bruh you can’t pass your hand through stuff because of the mini electric fields of all the protons and electrons, nothing to do with density.

  133. Kassia Raj

    June 4, 2022 at 5:02 pm

    aahh I thought I recognized her!! This was my freshman chemistry professor – love you Dr. Biberdorf!

  134. What You Up to Austin?

    June 4, 2022 at 7:11 pm

    That was a flawless description of how bonds form perfectly at the level of the person asking the question. Master teacher as well!

  135. kiiroitori

    June 4, 2022 at 9:47 pm

    Her excitement and love for science is contagious!

  136. Maggie

    June 5, 2022 at 2:12 am

    WOMEN IN STEM ARE AMAZING! I love her fun analogies that make everything make sense!

  137. Jeremy Nyberg

    June 5, 2022 at 6:44 am

    I feel like I could pass any class she’s teaching.

  138. Sven

    June 5, 2022 at 10:12 am

    8:28 unbelievably what?

  139. João Vitor C.R.

    June 5, 2022 at 6:47 pm

    Humans do have pheromones! Less usefull but we do have them

  140. Menzi Nosimilo Khoza

    June 5, 2022 at 8:46 pm

    I’m not a Chem major but I actually understood her!! Her students are lucky!!!

  141. Omaer 1

    June 6, 2022 at 11:29 pm

    Very Nice Bro!-Get Good People!

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