Nomenclature: Crash Course Chemistry #44

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Ever feel like there's an international team of bad guys changing all of the easily remembered chemical names and turning them into test-failing, number-infused, pain-in-the-neck names? Well... you're not wrong. IUPAC exists, but try to keep in mind that they're doing it for the greater good. In this episode, Hank talks about IUPAC, prefixes, suffixes, ranking, numbers for carbon chains, and cis or trans double bonds.
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
Common Functional Groups: en.wikipedia.org/wiki/Function...
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Table of Contents
IUPAC 0:00
Every Organic Compound Has Only One Name 1:02
Prefixes 2:16
Suffixes 2:47
Ranking Functional Groups 4:18
Lowest Possible Numbers for Carbon Chains 1:54
Cis or Trans for Double Bonds 6:35
--
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Опубликовано:

15 июл 2024

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Комментарии : 921

@crashcourse 4 года назад

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

@Mikej1592 9 лет назад

I thought I was confused and not able to understand this stuff, then I watched this video, now I KNOW I am confused and unable to understand this material.

@salmonorigami 9 лет назад

At least you learned something then, right?

@Mikej1592 9 лет назад

AbuBakr Akram I passed the class with a B so I guess I did.

@rebekahsadie 5 лет назад

@@abubakrakram6208 you know what's crazy? You have the same beginning name of my chemistry teacher. "Abu Baker"

@izj-19 5 лет назад

Bwahaha

@kelliefiteturner6836 4 года назад

PREACH

@emma-bg3zb 8 лет назад

Chemistry test tomorrow, let's do this

@drfifteenmd7561 6 лет назад

emmy irene I got an average of 69% on mine. :( I actually tried too.

@sdslayer100 5 лет назад

Hey 2 years later did you pass

@louisbradbury2347 5 лет назад

@@sdslayer100 Hey 2 months later, i think thats a no

@sdslayer100 5 лет назад

@@louisbradbury2347 Hey 4 minutes later that sucks

@KatherinePierce_81 5 лет назад

Just a friendly reminder for other young ppl studying for exams Don’t forget to study your textbook 📚

@jefffceee8930 5 лет назад

"IUPAC is the international organization responsible for your unhappiness" lmaooo

@TheTootsiegal6797 9 лет назад

"You don't need to know theses by heart" lol in grade 12 chem you do :'(

@JohnnyDoeDoeDoe 9 лет назад

I came here for the exact same reason :( Good luck on exams

@TheTootsiegal6797 9 лет назад

John Doe you too man, you too.

@RianKashfi 9 лет назад

He said "beyond the complexity that we have here," meaning that he was taking about like huge-ass molecules that are super-duper complex, so don't worry. :3

@kitaisuru 9 лет назад

lol i'm in grade 11 herealso have to do all kind of chemical equation between these things

@cubedude01 9 лет назад

Kitai Suru If you go into college Chemistry you'll be in for a shock. 11th and 12th grade chemistry are nothing compared to even first year Chemistry.

@oafkad 10 лет назад

Albert Einstein - 'Never memorize something that you can look up.'

@vaibhavkumar8541 6 лет назад

Hey, Folks! Wtf ....

@kedaariyer4887 5 лет назад

Wtf the internet never even existed when Einstein was alive

@kennygucci 5 лет назад

Kedaar Lyer Umm.. “looking up" means from dictionaries, or any encyclopedia.. Yes, you can look up things from sources other than Internet... *sigh*

@SeraphicGoddess 5 лет назад

I wish someone would tell my Ochem professor that 🙃

@sniperammow4865 5 лет назад

Deondre Johnson I am just in high school and I am dying, how much pain are you going through.

@19jewels95 8 лет назад

I think so many students find these videos, and similar youtube videos so helpful is because you have already learnt this in class. Hearing it for the first time is always so much more confusing, but having it solidified in a different format and with a different perspective makes all the difference. This is mainly because I'm trying to study chemistry on my own (screw you GAMSAT), and watching CrashCourse when trying to learn a new topic for the first time, I find I actually learn very little. So, whilst CrashCourse is a great resource to catch your interest in the sciences, or as a quick refresher for students, it is pretty bad for people learning it the first time. So if you're having a lot of trouble learning, its not you. Keep studying, and it'll make sense soon enough :)

@chocozeus920 7 лет назад

That's right; I don't agree with the people that say they learned much more from a 15-minute video than a 3-hour lecture. It's simply that the first time it's all foreign concepts heard for the first time.

@shaniaali1497 7 лет назад

yup

@jennali9800 6 лет назад

Actually, I'm trying to study on my own too, and I find Crash Course very easy to understand. But then again, I've always been a fast learner, and I'm also the kind of person who likes watching at 1.5x speed...

@sniperammow4865 5 лет назад

Julie Lam lol your funny, in grade 12 this is an Independent study unit, I am learning thermal while doing this. There is a 30 min presentation and a test in and we only get 4 weeks.

@abinashsharma5036 5 лет назад

thankyou

@JanelChristensen 9 лет назад

Nomenclature was always my favorite in organic chem. Even when I was failing the class, I always did well on nomenclature.

@icestonevulpix3469 4 года назад

3:19 no you get drunk.

@kylehazachode 10 лет назад

I've been watching CrashCourse forever now, and I just realized something awesome. The animations are very similar to the animation cutscenes used in The Hitchhiker's Guide to the Galaxy nice

@acetylen42 10 лет назад

7:26 - tell that to my chemistry teacher, back when I was in highschool.

@sniperammow4865 5 лет назад

My chem teacher says to our choice if we want to memorize, most people do because they don’t want to spend 3 house after school to finish there test.

10 лет назад

Standardisation, it's a pain in the ass. But it's just that kind of pain in the ass that actually saves your life. Just like a prostate exam. Wait what.

@sniperammow4865 5 лет назад

Nahuel Méndez Diodati you are amazing.

@6mozuke9 7 лет назад

"You don't have to memorise this!" Tell that to my Organic Chemistry lecturer and my unit coordinator... :(

@craydenrosario7847 4 года назад

Amazeballs!!!!! Totally mind boggling way of explaining!! You've just showed something worth living to and understanding so deep in the curious that you can never imaging. Stay blessed n continue the amazing work!!

@jackwaynard6480 10 лет назад

In case anyone was wondering about the exact precedence of the functional groups listed in this video (ranked in decreasing priority): #1 Carboxylic Acid #2 Esters #3 Aldehydes #4 Ketones #5 Alcohols #6 Amines

@AironExTv 10 лет назад

Another awesome lecture. I'll try to remember this when i need to look it up again. Thanks.

@nanziie2876 Год назад

Thank you so much! this helps me understand more of organic chemistry. I've learned about Trans and Cis before my class teacher explain to us. Now, I feel like a nerd haha

@Yamikaiba123 8 лет назад

It would be so useful if RU-vid gave us a 0.75 speed.

@TheRok 7 лет назад

Video Speed Controller extension for Chrome.

@lkjkjhhgf 7 лет назад

why just why

@tejasmenon8643 6 лет назад

It gave spees

@limitless_j 6 лет назад

Your wish was granted

@CRUSHURFACE1 6 лет назад

JOmegaRadical I guess there is a god after all 🤷🏻‍♂️

@elizabethralston6486 9 лет назад

I kind of love your right now. You made more sense in this video than my chem teacher did in a week of learning this. He is horrible at explaining! Thank you so so so much! (seriously, I'm on the verge of tears right now because this has been the longest day, and not understanding chemistry has been the icing on top of the evil monster cupcake. Thank you)

@megansnyder1899 7 лет назад

this is perfect, i needed a quick review. none of the 55 min naming compounds like all the other videos. Thanks!

@Waggles1123 10 лет назад

It'd be cool if there was an online game where you could build molecules based on IUPAC names.

@IceMetalPunk 10 лет назад

Your wish has been granted: web.chemdoodle.com/demos/iupac-naming

@HerTheOneAndOnly 6 лет назад

"She was right, that girl was trouble" I am actually in tears

@paigehardy7236 10 лет назад

I actually enjoy watching all his videos and find them very helpful! thank you!

@paulanonuevo9056 4 года назад

My brain stopped working in 5:00. Will watch again for the 10th time 😅

@annthorn8956 5 лет назад

Hey, Crash Course, staff. Great thanks, for your videos pep's it's really helpful to me ever since G-11 up to now especially in the world of science, biology, chemistry and etc. especially chem.

@FriarTug 8 лет назад

"And no, I'm not doing the cinnamon challenge... Ever!" Didn't I just recently seen you do the cinnamon challenge. (Starts searching through every episode) Oh, that was your brother. Never mind.

@anonymousaubergine4455 8 лет назад

what ep was it?

@Alex_Off-Beat 8 лет назад

I think it was the World History ep on the spice trade.

@FriarTug 8 лет назад

I swear that I remember answering your question, Robert Dmitri, by posting that link in a comment to you. It's weird that I remember doing this, but clearly I didn't.

@Alex_Off-Beat 8 лет назад

It's World History #23: The Colombian Exchange

@anonymousaubergine4455 8 лет назад

The Reasonable Gamer nope, never heard of you

@RahulBasu2001 7 лет назад

Just the enthusiasm with which Hank teaches makes me smile :D

@Mompellion 10 лет назад

I've found something similar to the topic you spoke about at 1:40-2:05. In 1668, John Wilkins tried to create a language in which each word represented the thing itself. For instance, Zi identifies the Genus of “beasts” (mammals); Zit gives the Difference of “rapacious beasts of the dog kind”; Zitα gives the Species of dogs. (Sometimes the first letter indicates a supercategory- e.g. Z always indicates an animal.)

@juaniusm 7 лет назад

when these RU-vid videos teach you more than your college professor does... thank you so much for these videos

@shnitzle Год назад

I got a 77% in chemistry as we speak, that’s about to go down tomorrow.

@imreadyfornothing 8 лет назад

Ive spent hours trying to find a video finding a video that explains this so I can understand, and this one did, tyvm!

@johnlittlejhn3632 8 лет назад

I've literally binged this whole thing I have my psychology and chemistry exam on Monday yay

@rebeccaclark1885 5 лет назад

watching this in 2019 and remembering the cinnamon challenge was a thing

@Fenkick2021 5 лет назад

I’ve never been so confused about something in my life

@lordheaviside2605 5 лет назад

This video was so helpful I watched it over and over again. I decanted 236.588 mL ± 12.350 mL of oxidane into a cylindrical poly(ethyl benzene-1,4-dicarboxylate) flask and drank it to maintain a tonicity suitable for homeostasis.

@steelguard3 10 лет назад

Very nice and complex material. Keep doing that good job!

@misaoayakarox 7 лет назад

5:23 I can't be the only one who saw Pit from Kid Icarus as the angel there, right?

@slystitched507 5 лет назад

I still cant believe we took this in class dont remeber any of this

@siriy2869 4 года назад

Wonderful and quick explanation/ revision for the night before the exam!

@banaalani7216 6 лет назад

OMG YOU SAVED MY LIFE! MY EXAM ON SATURDAY AND I WAS SUFFERING FOR A WEEK TO UNDERSTAND THESE CONCEPTS I WISH YOU ARE MY PROF :( MY LIFE WILL BE SO MUCH BETTER.

@xcarsan 9 лет назад

Now I have hope on passing my exam. Thanks!!!

@gabriellathompson7134 9 лет назад

James Ryder

@MoonSpotRoXX 10 лет назад

Thank you IUPAC! Need more of these systems, or naming conventions ideologies, being used in more fields/subjects. Time is better spent learning and understanding the material in depth. Which, in my view, is a big chunk of what good nomenclature enables. Rather than being forced to stroke some (often) dead persons ego. Be tested on their life's woes, and why 'X' is named after them, or why they got to chose what to call 'X'. Leave that kind of 'trivia' for the more fanatical people. Or perhaps history classes ;)

@pinkvio 5 лет назад

I’ve been having the hardest time with this and I laughed from my heart at the intro

@ptolemycleopatra 10 лет назад

Thank you so much I was looking for a good Nomenclature video last week and here we have one!

@SanaMF 10 лет назад

I'm done with Chemistry and Biology ! Next semester I'll be taking Physiology and Physics ! I would appreciate it if you make us a few videos to explain annoyingly non-understandable material into fun understandable ones. :D

@50doctorwho 10 лет назад

after this series is done they're doing another "mini series" I know that john is doing another literature one, I'm not sure what hanks doing but Physics seems like the logical next big series for Hank

@Teaj383 10 лет назад

introductory physics is fairly easy if you're good at math, and also very logical. At least to me. I wish you luck in physics, though, as I know that it's not everyones strong suit.

@SanaMF 10 лет назад

thank you guys

@KemaTheAtheist 10 лет назад

Khan Academy

@Kmartsmart 10 лет назад

If you're decent at math, introductory physics is really, quite easy. Just make sure you know how to use your formulas and you'll do great!

@AbujanDiico 8 лет назад

ok... that somehow got stuck in my brain more than the 2 hours lecture! is it the colors and picture? our chem prof is not exactly the nicest thing to look at. just saying thanks for the vid it helps.

@WhiteKillerRabbits 10 лет назад

This was a fantastic video- Hank's the best!

@noxjoe 9 лет назад

Bro, youre awesome. Gonna watch your vids after every new lesson.

@matthewcilia2498 7 лет назад

The flash: Hank Green, the fastest man alive

@ttamdude 10 лет назад

Am I the only one that wants a crash course physics? I love this stuff!

@erikamoses3848 4 года назад

you are a complete blessing like you're literally amazing

@selbmannlisa 10 лет назад

Thankfully i am about to learn most of that by heart. Fun times!

@tiggerthecat1 9 лет назад

I dont use these videos to actually study with! They are great for review and consolidating or reinforcing the knowledge I already have! Not only that but they are actually funny and entertaining to watch!

@NithilanVincent 8 лет назад

isn't 7 hept not sept?

@Maryam-dr3se 8 лет назад

+Nithilan Vincent no it's sept

@NithilanVincent 8 лет назад

ok well then my chemistry teacher is teaching me incorrectly MemeeihD

@Maryam-dr3se 8 лет назад

Nithilan Vincent oh

@LeeMisLabiosx 8 лет назад

+Nithilan Vincent My Lippincott's biochemistry text book says it's hept! :/

@jacobburton1213 8 лет назад

Latin = Sept Greek = Hept

@LigerZero1985 10 лет назад

is always delightful i understand what he says in the video without jumping back to text book. anyway, this is a very useful video for organic chem students.

@jessicacanary4017 4 года назад

I needed that intro. Thank you.

@georgebright9046 10 лет назад

When you say add "-one" onto ethane to make ethanone isn't that incorrect? A ketone needs at least one carbon on either side of the carbonyl, ethane with two carbons can only be an aldehyde. The smallest ketone is propanone.

@marciolazzarotto4971 5 лет назад

Ethanone hurts my ears

@BecauseWeCanTheChannel 10 лет назад

Want to lose weight? Say the IUPAC name of table sugar before consuming it. (2R,3R,4S,5S,6R)-2-[(2S,3S,4S,5R)-3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Don't ask me why RU-vid decided to put a line through parts of the name.

@andrewephron4389 10 лет назад

umm... i think i'll stick to glucose or sucrose...

@BecauseWeCanTheChannel 10 лет назад

But how do you know the structure of sucrose without saying (2R,3R,4S,5S,6R)2[(2S,3S,4S,5R)3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy-6(hydroxymethyl)oxane-3,4,5-triol?

@sarkisianelin Год назад

YOU SAVED ME thank you for these amazing videos!!!

@crazyaaliyahcharger 7 лет назад

Was doing chem recap and couldnt help but notice that you're a manu fan!

@TheFireflyGrave 10 лет назад

Finding the longest carbon chain feels like finding the longest road in Settlers of Catan.

@trewq333 9 лет назад

Dang it! Playing at normal speed sounds like he drank too much coffee, and at 0,5x he sounds like a drunk person!

@ionalang7888 8 лет назад

This is so helpful! Thank you!

@CHUCKLZLORD 10 лет назад

Wonderful episode

@malaak.623 3 года назад

Biochem exam tomorrow✌🏻😬

@kitsumyr9752 4 года назад

7:31 "thats why we have the internet and textbooks..." tell that to my prof 😂

@rockyp3917 5 лет назад

This was the most entertaining and most difficult video at the same time. 😂😂

@caitlynk4449 8 лет назад

This is awesome I love these videos thank you so much

@livintolearn7053 6 лет назад

This guy is so much better than my teacher...

@wildbanana5628 6 лет назад

ha ha ha

@zekebednarczuk5739 6 лет назад

*bout 6 minutes in on my 10th time watching* "OH NOW I GET IT"

@ezelanne 4 года назад

This gave me hope

@BoldOpal 10 лет назад

lots of information, I'm going to have to watch this again to fully absorbed it.

@Cillyman17 9 лет назад

SO HELPFUL

@H3c171 9 лет назад

make the speed 2... 0.0 bruh

@makecostaricahome 9 лет назад

Cristiano Ronaldo and then .5 speed for a drunk giggle

@Rin-qj7zt 8 лет назад

+Cristiano Ronaldo yeah, sometimes that's exactly what my professor sounds like in class.

@malinarobertson4272 8 лет назад

+Cristiano Ronaldo HAHAHAHAH

@TM-hd4ih 8 лет назад

how do you change the speed?

@anjalaabner8962 7 лет назад

0.5 LOL

@frollard 10 лет назад

Not to be too brash... but this is a fucking nightmare. I love it :)

@RaHuL-sb6uo 6 лет назад

U r one of the best tutor Mr. Hank ❤️

@jacobreinvented 10 лет назад

This was really helpful. Thanks.

@heddiepalazzola7118 7 лет назад

*I need essay writer. Please recommend.*

@deidrestaner1388 7 лет назад

*essay.0b0.all-about.in* - *this service has done well with all the papers I requested or needed.*

@Moseslimky 10 лет назад

i wonder whether John has disowned Hank for wearing a Manchester United shirt

@liammegill749 10 лет назад

it's a Swindon Town shirt...

@epicminecrafter5404 4 года назад

*Always makes our lives easy thanks man*

@brojeshrishimukherjee9411 5 лет назад

Too good explanation of nomenclature

@Erik-yw9kj 9 лет назад

This video was a lot of fun =) No I'm not being sarcastic!

@PPMBlast 9 лет назад

if only .75 speed existed

@georgebateman3876 9 лет назад

Blast He goes fast so you can get through them all. You're supposed to reverse the video where necessary; that's why they put a table of contents in the description as well.

@georgebateman3876 9 лет назад

Blast He goes fast so you can get through them all. You're supposed to reverse the video where necessary; that's why they put a table of contents in the description as well.

@yrf3766 9 лет назад

Blast Video speed controller for chrome ! you can have speeds from 0.25, 0.5, 0.75. 1.25, 1.5 . 2

@anjalaabner8962 7 лет назад

IT DOES

@arandomzoomer4837 7 лет назад

this video made me happy

@daanush468 8 лет назад

Awesome work. Totally subscribing.

@Arizona9001 7 лет назад

dafuk is going on O_O my head hurts. i'll stick to architecture.

@asdfafafdasfasdfs Год назад

Why can't we just spell out the formula...

@TheRok 7 лет назад

That intro was hiiiiLAAARIOUS!

@iluvspongebob88 9 лет назад

CrashCourse have you guys considered making an Organic Chemistry portion of Crash course? it would be so appreciated.

@xXTheREDCometXx 7 лет назад

Hept>sept

@starfirenonie 9 лет назад

isnt the prefix for seven hept?

@abubakrakram6208 9 лет назад

starfirenonie Yes..........................

@alexhartley3576 6 лет назад

ya :/

@fatimadelowar9106 6 лет назад

starfirenonie yp

@tomas2375 6 лет назад

I personally find it great what IUPAC has made possible. To be able to see the molecule from just a word...

@zhack3d 7 лет назад

Im going to study the whole nomenclature today!

@MrHSX 9 лет назад

Personally, I hate the 'common names' cause they don't serve any purpose anymore I mean I am never allowed to experiment with the compound in its natural state so why do I have to learn the common name which has no use to me?! And neither is there any other information that I can get from it. So why cant we just get rid of it...! I know its impossible, but at least in school level we can keep it to a minimum The IUPAC is sooo much superior as for many reason Hank mentioned

@georgebateman3876 9 лет назад

MrHSX What country's system are you on? Here in the UK, we exclusively use IUPAC names in school (at least on my course) at the 16-18 level.

@MrHSX 9 лет назад

I'm in India In the ICSE board (which is considered an 'international' education board)... And damn you're lucky...

@georgebateman3876 9 лет назад

MrHSX Well, I have heard that the old names still haven't been replaced in industry, so you might find that you have an advantage if you become an industrial chemist. Otherwise, yeah. Not much fun. They make a real effort to be standards-compliant in UK chemistry courses. The old British spelling "sulphur" is out, and we're told to use the more international "sulfur", for example. I don't mind but it takes a while for the teachers to adapt.

@MrHSX 9 лет назад

George Bateman Yeah, true dat... Fortunately or Unfortunately, not gonna dive much deeper into the Chemistry field... Lol, that just makes us more confused, to follow British (which we do usually do) or to adopt the growthing US standards... But yeah, I guess it's great for everyone at the end of the day to speak the same language world wide...

@xboxboy93941 8 лет назад

+MrHSX The reason we still use common names is for the same reason why people call reactions in which electrons are taken away "oxidations" or how one coulumb is not equal to the charge of one electron: scientists in the past started doing things one way, and when they realized there was an easier way to do things, they more or less just kept doing what they were doing. Old habits die hard, you know? It's easier to just create a new system than to overhaul an existing one. Plus, common names are useful in some classes of compounds, like diacids. Nobody calls them by their IUPAC names. Everyone uses common names for those. Just remember, mother makes Oh My Such Good Apple Pie, Sweet As Sugar.

@ArtificialDjDAGX 7 лет назад

The IUPAC list isn't in the description...

@yukelid 7 лет назад

exactly

@madhughneasai7106 6 лет назад

en.m.wikipedia.org/wiki/Functional_group#Table_of_common_functional_groups

@neoretrodude 5 лет назад

The issue was not this - it was that in the video there is a link below for assigning names in molecules with multiple functional groups, like a hyrachy

@neoretrodude 5 лет назад

it's mentioned in about four minutes fifteen in

@amithsaranyuds861 8 лет назад

dude you are the best and the coolest chemistry teacher

@sprout1727 Год назад

Watching this minutes before a chemistry test, thank you 🙏🙏🙏

@spypruduktion 9 лет назад

The swedish namnes for organic compounds are actually quite funny... Every aldehyde compound basicly ends with the swedish word for "anal" Makes for a bit of giggeling during a lesson

@barbarabelcher9326 7 лет назад

dewitt green

@barbarabelcher9326 7 лет назад

find dewitt green singing a playing.organ

@papisuckmypoosay69 6 лет назад

butanal

@CoxTH 10 лет назад

7 equals Sept-? I object, because it is actually Hept-. It's easy once you realize that from 5 on it's actually just the Greek word for that number.

@Ddub1083 10 лет назад

there are two numerical naming schemes...based on latin and greek. They are effectively interchangeable but certain things use latin over greek in some cases (but confusingly not all or close to all), normally when the word the prefix is being applied to is latin.