The History of Atomic Chemistry: Crash Course Chemistry #37

[@crashcourse]

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ

[@dancingtortugha1356]

Now we won’t fail chemistry 🗿

[@crashcourse]

Teeny tiny correction for y'all! At 8:50, we misspelled "Heisenberg" as "Heisenburg." Sorry for the mistake!

[@thatweirdbeatlesgirl8285]

who else has a chem test coming up

[@johncallaway4149]

tmr

[@chakkradar6825]

Me!

[@sharifaalsabah5653]

tomorrow

[@deps8579]

Same

[@thatweirdbeatlesgirl8285]

lmao I didn’t pass mine

[@modernmuse3879]

if this guy was my chemistry teacher I'd be getting amazing grades

[@suryadeathbringer4724]

yes

[@reginaldreynolds1996]

+MODERN MUSE I wish!!

[@JupiterThunder4]

+MODERN MUSE Your chemistry teacher would have time to put together awesome presentations like this. Mostly because your chemistry teacher wouldn't have the production staff and kick butt animators.

[@stevengalatoula3216]

WORD11

[@haileyjeong2858]

OMG same! My teachers name is legit Mr stoner

[@giftedguitarist161]

For myself: 2:15 3:13 JJ Thompson 4:21 5:31-planetary model

[@angelatrinh]

name is actually spelled JJ Thomson

[@imysterygamer]

My chemistry teacher if you are reading this please resign

[@KairelEdwards]

lmaoo

[@kushi3764]

Lol what I feel about my teacher

[@alishamarte9963]

My chemistry teacher used this

[@cart4092]

I'd be happy if mine just played these videos and tested us on it.

[@zarzar2932]

@@alishamarte9963 sam3

[@differentman2006]

Whos watching this in quarantine 2020 becuase school dont help that well

[@whynotanyting]

I've already learned all of this but this does help me review and it's interesting to watch the history of the Atom especially with the elegantly animated graphics

[@Jajamola888]

Einstein just steals Bohr's tea at 5:45 WTF Einstein

[@FROPDESAI]

Jajamola888 I guess Einstein was bohr-ed... GET IT?! K i go now

[@ThePandaclash]

+Tanishq Desai noicce

[@esnethen5915]

YEA!!! :O

[@_szo]

That's so savage. He can afford tea. GO GET YE OWN TEA EINSTEIN

[@gettabhora986]

See my surname

[@jinminkimpark7162]

I need this dude as my chem teacher, I'll be getting grades higher than Jin's confidence in his looks

[@howelsimos2088]

Yup and that's my co-Army right there💜💜💜💜

[@loganthirtyarce471]

yep. you really do man.

[@gustafpark3776]

@@howelsimos2088 and that's my co-coArmy right there

[@hannah17387]

same

[@anyasvt]

the way i had the exact same thoughts while watching the video... armys really do share brain cells

[@spectre111]

I love this episode! I have always liked 'the history of things' like this. It's not atomic chemistry its the history, the story of how we went from A to B to C to D and finally F.

[@캐나다시골생활]

Raise your hand if you came here for the science assignment.

[@elyssa2604]

LOL EVERYONE HERE FOR CHEMISTRY WHILE IM STILL WONDERING WHY THIS IS IN OUR PHYSICS LIKE WTF

[@JunSian1001]

wow... Hank went through all the names, experiments and mathematical concepts of atoms, which I learnt for the past 15 years, in less than 10 minutes... Very impressive..

[@storm99]

JOHN Dalton, not JAMES Dalton 2:15

[@veronicacamp9334]

Joe Zhang Lol XD

[@alliebova9000]

james is a nickname

[@heebamirza8710]

Glad I'm not the only one XD

[@vanessac1651]

It might've been a Harry Potter "James Potter" joke

[@winniieww]

you don't get the joke xD

[@howarthe1]

I love this episode. I always seem to get my science lessons as a series of conclusions with no clue how scientist arrived at these conclusions. I really appreciate this walk through how they developed the atomic model.

[@maurocastillo3406]

I need this guy as my teacher, my teacher only sits on her desk and reads what’s on her PowerPoint

[@RajitRoy_NR]

You did not mention Schrondinger????????????? His formula gave rise to those s p d f models

[@aaronroman2479]

It was more Schrödinger than Heisenberg not even a mention?

[@RajitRoy_NR]

***** Did daddy feel offended....??? I was just pointing out idiot

[@samhaseldine1600]

Rajit Roy Also no mention of Milikan, Chadwick or De Brogli? maybe the're just not as important.

[@isaacskylee]

This might be an old video, but this saved me... BIG TIME! Thanks for the info! I learn more from Crash Course than my teacher at school!

[@MrDexter337]

+Isaac Lee Your teacher either sucks at teaching, or doesn't understand the material him/herself. Unfortunately this does not necessarily get better with college. It's a good thing you sought out other sources of educational material. Don't assume your teacher is a genius.

[@isaacskylee]

my teacher does suck....so true that

[@do4511]

*than, I bet your english teacher sucks too.

[@isaacskylee]

alright.ill fix it lol. At least i see my mistake XD

[@froggiter4185]

Hey dude these videos are great for learning because you add humour but are still to the point, they help me understand better while learning at home

[@MAJ-Lange]

I feel that if I watched every video this dude's produced I could graduate in no time. Like seriously, this guy's covered so much, I've been asked to watch his videos for class so many times. I probably know this guy better than some of my teachers and classmates.

[@nadineebada6557]

2:16 that harry potter reference. I wish he was mine He is really divine The hero who conquered the dark lord

[@persiankingish]

He was probably pretty terrible in the bed.

[@jlouie08]

This is great! I love all the animations. The only negative thing I have to say is he talks too quickly. I feel it would be hard to follow for someone who has no background knowledge of chemistry.

[@A114N8D]

It's a crash course, it's meant to be a review rather than an introduction to an subject.

[@dinimasharma3549]

Try playing at slow playback speed

[@tiffanymiller01056]

@@dinimasharma3549 thx for the tip! I just adjusted mine.

[@ellas.7480]

It’s so cool that people who lived such a long time ago can influence what we know today!

[@stephanieandsophia]

What about James Chadwick and the discovery of the neutron?!

[@stephanieandsophia]

***** I wish I could however I don't have a job or money to do so

[@reubenwallace-gibb4209]

+Steph Berry Dis is tru

[@shtoni]

Steph Berry sssssh we don't talk about him

[@jhyland87]

Exactly what i was wondering... Apparently its not important enough.

[@rzrraph710]

@Adriteyo Das different person JAMES Chadwick cane after Bohr

[@jaguitangelyn6607]

I love a chemistry teacher teach like this. Plus his Save Ginny Shirt. HAHAHAHA

[@zarzar2932]

u mean gaaaaaaaaaaaaay shirt

[@TapOnX]

Crash Course Biology > Crash Course Chemistry > Crash Course Physics > Crash Course Mathematics > Crash Course Formal Logic > Crash Course Philosophy > ??? Theology? Also, we need John to make Crash Course Economics, Crash Course Sociology and Crash Course Psychology, to close the gap at the other side of the spectrum.

[@hashtagask7409]

Your prediction was close

[@videogammaandmegadude4724]

TapOnX and law

[@emeryflewelling6742]

My science 8 class teacher gives a lot I mean a lot of cringey animated videos and this once he gave a video I could watch without cringing so good vid :)

[@ricardoperedo3517]

This is so weird. I was doing some Chemistry homework on the Atomic Theory, and I got inspired to watch some "Crash Course: Chemistry" videos. So I opened up the KZbin channel, and the first thing I see, is this video. Awesome! Thanks Crash Course for all your videos. I really like watching these videos so I hope you keep it up with the video, I'm also looking forward to watching future series. Thank you, and have a nice day!

[@WarmUpTill]

it was very interesting to see the development of the atomic model! thanks for the video and keep up the amazing work!

[@hannahgarcia2512]

thank you for summarizing an entire college chem reading that now I don't really have to do :)

[@ToppyTree]

I was taught that Rutherford expected most of the Alpha particles to be reflected because the plum pudding model implied that atoms were solid mass with negative charges dotted around. Anyone care to explain the confusion?

[@longboardin720]

I am studying chemistry at the moment and i was taught that the cathode rays weighed about 1/2000 of a hydrogen atom instead of arround 1/1000

[@mikekelso138]

I think Thomson's methods of measuring the mass so many years ago were not very accurate - so his estimate of 1/1000 x an H atom was not so bad, considering. But you are right, electrons are approx. 1/1800 x an H atom.

[@calinottingham3351]

There's probably a good amount of different numbers, probably in between 1/1000-1/2000, but I'm not sure so don't quote me on that

[@synth2141]

You are right I know I'm 4 years late and many others have answered but yes J.J's first measurement WAS 1/1000 but later chemist corrected the measurement to about 1/1840ish kind of disappointed hank didn't correct it but oh well I doubt it would end you on a test unless it's very specific but still

[@meenakshisinghvi1642]

Ummm.. it's 1/1730

[@meenakshisinghvi1642]

That's what has been taught in my class

[@tezzeret2000]

Hmm.... Wasn't it more Shrodinger's theory who predicted electron probability densities, nodes, etc., while building off of Hiesenberg's uncertainty principle (excuse the spelling on their names if I'm wrong, by the way...)

[@reubenwallace-gibb4209]

You, my friend, are amazing, Thank you for helping me get through Year 11 and 12, or as Americans may call it, Junior and Senior year.

[@blank6896]

+Reuben Wallace-Gibb (Spirit of Harmony) Lol

[@eryalmario5299]

This was made 3 years ago and we're just about to learn about this in class

[@michellesullano2069]

Thank you so much for a great presentation!! first major discovery that set off modern atomic theory was that atoms aren't in fact the smallest things that exist. J. J. Thompson discovered the electron in 1897, which led him to posit a “plum pudding” model .

[@OurHourglass]

I think this would have been a great introductory episode.

[@amyzhang6807]

"And cheese atoms are squishy and delicous"

[@virasa907]

There's more chemists he didn't mention; Millikan who discovered the mass of the electron with the the oil drop experiment, and Chadwick who discovered the neutron

[@tezzeret2000]

Good video overall though- atomic theory gets pretty awesome when you can apply its principles to like 6.02*10^23 atoms.

[@ganimer8658]

Anyone here from Ms. Perez’s class? P.S.: Ms. Perez if you’re reading this, hi, hope you’re having a good day 👋🏼

[@nymphedre2626]

oh my god, i just discovered this channel and I’m soooooo happy. My chemistry teacher is really good, but u have a completely different way of explaining things, it’s almost like I’m not studying. Thank u soooo much for those videos, u r amaaazing!! (if there r some mistakes, sorry, I’m from Poland)

[@greenday331996]

exactly what I needed to end the day - thanks CC

[@shamueelcrack697]

his name was JOHN DALTON, you missed that but the rest is freaking cool

[@lunegif]

bless this video im in junior high (my last year) and we're learning about atomic theory and the different models

[@corinneconley13]

Love your videos, unfortunately every time I try to share them with my students the majority of the class complains that you talk too fast. Everything is so well done, I wish they were more friendly for a wider audience.

[@cvwxk]

I never knew that the Greeks thought that there were different atoms depending on the material, such as clay or cheese!

[@blivion7203]

0:23 They developed it with the Pythagorean Theorem, Zeno's paradox and the Golden Ratio 😂😂😂 (A reference to AC Odyssey)

[@mariomarroquinvega]

This is kind of a long shot but you guys should consider doing something like history of science. I really enjoyed this video

[@lorenzomorningstar7794]

2:15 its John not James dalton (said it as James dalton)

[@oldclem_]

'properties of both... and neither'. This is why Chemistry and Physics is so cool.

[@saltandlight2379]

How come whenever they show a historical figure's face they color it like an oompa loompa

[@FirstRisingSouI]

Finally something on the show that's easy to understand.

[@domassa5985]

"I am the one who knocks" :D

[@AisMLeen]

The whole time I was watching this, I had your talk video in mind. I'm so lucky to get to choose my teachers!

[@Joy4everM0RE]

Cheese particles :)

[@kalyanisrivastava1780]

Test tomorrow. Time to binge watch these.

[@RCynic75]

Love the somewhat subtle Breaking Bad reference

[@dolapoolarewaju9423]

@ Crash Course there is some scientists you forgot that also had an impact on the atomic model as we know today e.g. Robert Boyle and Henry Becquerel

[@AllKeyur]

The mark... Are you.... Dalton : yes I am the goddamn Harry Potter !!!

[@VideoNozoki]

This is already a history of science (that is a major part of the videos)

[@user-hz8eo8zi6s]

*In the Rutherford experiment, he didn't expect the alpha particles to go straight through. They were positive and so was the atom's emitted charge which means he expected them to repel. Them going straight through showed that there was a lot of empty space.*

[@ThePercussionFREAK]

MY TEST IS TOMORROW OMG CRASHCOURSE YOU GOD LIKE HELPFUL PEICE OF BEAUTIFUL GOLD, YOU!

[@lizperez9905]

"Hank is a mass of incandescent gas" (1:47) hahaha

[@willlewis77]

I've taken two years of chemistry so I generally don't watch this series but I wanted to watch this one because of the history aspect.

[@brokenstrategyclan1815]

Halloween was yesterday, its November 1st, my family is blasting Christmas music, drinking eggnog, and dancing... the *FREAKING TREE IS ALREADY UP!!!!!!!!* >:C

[@arayuh]

Broken Strategy Clan oh my, your like tho only other recent comment here rn

[@mackpeterson6496]

this is way more simple and quick than the vid we were assigned to watch

[@danielzucak4890]

What do you guys use for editing and animation?

[@ericvilas]

You can't think of them as either only particles or only waves, they're always kind of both. They spread like waves and hit like particles, which is why they can be confusing to understand. It's easier to sometimes talk about either one or the other, but it's technically wrong. Sound is a completely different thing, it's just that they're both waves, so we talk about their properties in a similar way. One is waves of electromagnetic fields, the other is waves of pressure, or movement of atoms.

[@Nicoder6884]

7:58 Super Mario bros reference!

[@MiuKujo]

I love science because of things like this. Science is never exactly right. It's only ever mostly right, and it accepts this fact. Everything that comes along is allowed to be put to extreme scrutiny until it is proven wrong. In fact, this is encouraged. SCIENCE! We only say we are right, because we don't know why we are wrong yet.

[@aggs7721]

Literally learned more in this video than I did in my junior year chemistry class.

[@trevorsimmons3477]

Would have been great if you would have mentioned Chadwick discovering neutrons. pretty good video anyhow

[@yousef.al-assaf]

What school do you teach in?! I am willing to move!

[@hamzaahmed9224]

He is an actor

[@LuisSierra42]

WTF, he has a B.S. in Biochemistry

[@Stabacs]

Really cool vid, but please don't ignore Bohr's contributions to quantum theory.

[@MrRoboskippy]

Yo, Mr. White!!

[@Wolfenkuni]

Bors Model had tons of problems that where known at the time: When an electron moves in a circle it has to emit radiation due to Maxwells equations. (photons are just in the making at this time...). Therefore the picture of an electron moving around an nucleus was very disputed. In fact we talk way longer about the Bor model than it was actually seen as the gold standard...

[@musicon8349]

manooooooo, já muito é muito complexo estudar química e ainda um vídeo em inglês e legenda em espanhol. Eu não sou fluente em nenhum dos dois idiomas, Please subtitles in Portuguese !!!

[@BosonCollider]

Schrödinger's contribution is more or less necessary to derive the orbitals(the n quantum number) from coloumb's law. However, you can still get pretty far with the Heisenberg picture, if you input the energy levels from Rydberg's formula by hand and use spherical symmetry to show that the Hamiltonian commutes with the orbital angular momentum, and then assume it also commutes with electron spin. With this you can actually derive the correct degeneracy numbers for the energy eigenstates.

[@TheCanadamerican]

Walter white approves.

[@j8k36]

yeeee

[@danielfillion4537]

yes

[@abhiramkazamg4880]

ya it does

[@spinnykickguytaughtbynayrs1487]

walter

[@joeywithers7151]

yay go New Zealand. we make a huge breakthrough of chemistry

[@surfaceonyt5660]

Breaking bad reference

[@snaptrak3680]

New Zealand for life @Ernest Rutherford

[@urjakohli3715]

what about Aristotle? i know he was wrong but mention him at least

[@geniusmp2001]

Because he didn't have any noticeable impact on atomic theory, unless you count making it harder to accept.

[@FROPDESAI]

Urja Kohli It's a good thing John did not see your comment.

[@iluminadacanlas5634]

seriously?!😂

[@zachgoldstein9063]

Suggestions for the future of Crash Course: John- Politics/Government, World Religions, Economics Hank- Physics, Astronomy, Computer Science

[@mitchgiles654]

When James Dalton=John Dalton ? hahah

[@jerrymahajan]

This really helped in my chemistry assignment fam, thanks alot m11

[@kayeagcaoili]

you talk to fast i cant understand what youre saying it was like rapping btw thanks to those imformation

[@LiusCBJR]

Kris Nadado I'm a chemistry student and I'm taking an English course and I can not understand almost anything because it speaks very fast, but one of my goals is to understand a video of it without having to copy the caption and translate!

[@raneemjalal4547]

LiusCBJR ..i was in your place once and i know how it feels.. But watch tyler deewitt.. He speaks very slow.. And u actually understand

[@chayabaptiste4742]

really late, but try slowing down the playback speed :)

[@Shadaj-Nishad]

Channel name says it all Crash Course at a very high speed And Tyler Dewitt is good too

[@rashmisgourmetcooking6714]

Alfred Mathias I agree with you man.....Tyler Dewitt is A-MAY-ZING!!!!But I prefer Hank.

[@BosonCollider]

I think what he meant is that what you call plus and what you call minus is a matter of convention, and that out of two choices we picked the more inconvenient one.

[@dannybighair]

That is a nice jacket.

[@Badmintonbottle]

Daniel Arbiter ikr XD

[@bharathg8072]

Why can't all teacher be like this? If they were like him, studying would be more fun and my grades would go through the roof!

[@GJ-eo6ip]

You mean john dalton

[@saratuluwaktola7139]

To Tell the truth KZbin teachers are are more better than normal teacher!

[@mysterywoman8158]

Thank you soooooooo much.... this was sooooo damn helpful:):):)

[@haileyjeong2858]

it wasn't for me thats for sure :/

[@zemo8857]

Hailey Jeong Same 😂😂😂 he talks like rapper And they explained too many sections in one video I think it’s too much

[@vartikasingh1016]

monisha elangeswaran u r mad u thanks him ..........

[@stupidboy1746]

the vedic books are the oldest and even more advanced than today when it comes to science

[@dajiahshai]

this is amazing!! literally covered everything i need to know! thank u

[@sokratessiou]

cool graphics but he guy is talking too fast for a high school student to have a chance of really understaning what is going on!!!

[@NecroXO]

A high high school student....

[@darshanshah378]

Really not that difficult man...

[@FROPDESAI]

Darshan Shah In fact not at all difficult.

[@sokratessiou]

I do not mean oral comprehension here... I'm talking about understanding the implications, and having time to compensate.

[@FROPDESAI]

We do understand what you meant, and our reply was intended towards the understanding and not the speed at which he speaks. Chameleon59100

[@AldrenGalano]

Wow! Loved the vid. thanks much!

[@hey-zl4kh]

Did anyone else get the Game theory reference? (At least i think it was a reference)

[@imagaintwonkabar4384]

where

[@hey-zl4kh]

"But hey, it's just a theory." somewhere it was in there. :3

[@gjennks]

One thing you should have mentioned about the cloud model is that it is a probability distribution of electrons and the orbits are the area of only 90% of the probability as there is a very small (non zero) chance that an electron can be infinite distance from the nucleus.