At 9:19, when we show the gauche and anti conformations, we accidentally changed the perspective when going from the bottom chair to the Newman projection for the anti conformation. As a challenge, try drawing the Newman projection of the chair on the bottom left of the screen looking down the marked bonds--you can check your work using our corrected image: i.imgur.com/2DZtqRf.png It’s tricky to visualize these 3D images, so kudos to our awesome viewer that caught this! Thank you for your continued support
Crash Course in 2012: “This is water. Water is good.” Crash Course in 2020: “The methyl group moves into the axial position as carbon-1 pushes up and stays above the plane. The ethyl group has a lot less axial strain, therefore this a stable structure.”
Antenox that's my friend, what we called developing and evolving. But, this is still the surface, I sleep on a thousand pages book explaining about this thing, still it doesn't fit into my head. 😂😂
As someone who's only taken basic college chemistry years ago and has never used it I didn't know much at all. But I prefer videos to be way over my knowledge level than when they dummy it down.
There was a time, when I really want to flip the chair, while learning this, years ago. Now it has passed, and I meet this again in more entertaining and interesting way, I want to flip another chair. So jealous of this generation chem. student. 😂😂
Thank you so much for this! I've graduated years ago (somehow it's more fun to learn when there's no pressure of exams, who would've guessed) and the axial-equatorial flipping was one of the things that I had a lot of difficulty visualizing. That animation at 11:30 helps a lot! Wish I had this around when I was still taking org chem.
Thanks for the motivation to get out my molecular modelling kit again! It's been a while since I've played with it, and now I'm having fun flipping chairs 😄
I get the concept, but drawing the actual chairs and mentally flipping them to get the new conformations is frying my brain 😂. However you made it more clear than any of my chem teachers ever did so thank you!
My ochem proff used to get frustrated if you weren't a problem solver. He used to say If you're not part of the solution you're part of the precipitate.
At 9:19, did you mis draw the bottom newman projection? When I visually turn the chair confirmation I see the green H as going to the bottom left and the CH3 going to the top left
The energy for chair flips usually comes from the ambient room temperature (20 degrees Celsius is more than enough). If you were to subject single molecules of cyclohexane to very low temperatures, you wouldn't be able to see any more chair flips.
While I definitely recommend visiting again when class starts, it doesn't hurt to taste the subject matter now - even if it feels like it goes way over your head. If you recognize even a small portion of the terms/models/ideas it won't feel as daunting when you start studying them in depth. This works for me at least - its not the same for everyone
I get the concept but I'm going to have to watch this at least 4 more times to remember the details. Download the app and use the flashcards. They help so much!
ok I'll say it - cyclohexane is not a proper hexagon, exactly because of the puckering, that makes it 3d. Depending on perspective and conformation it can also look like a rhombus (chair) or a triangle (boat). If you made a graphene-like sheet with fused cyclohexane rings it would be all crinkled unlike the flat graphene with fused benzene rings.
Hello sir this is a really super video but one thing I wanted to request you is that please make videos for NEET exam well if you do not know about NEET exam then I am here to explain you about it and NEET exam is an entrance exam for medicine in India and nearly 10,00,00 people apply for the exam each and every year and it is still concerned that I do not know that whether this channel is Indian or some channel which is in abroad but please take my request into consideration and further on the NEET exam are conducted in exam centres and the total mark of this exam is 720 in which Biology which is the body carries 180 marks zoology carries 180 marks physics carries 180 marks and chemistry carries 180 marks so the total 720 maths and as India all now India is highly populated country and hence the competition for this exam is so hard and hence proper understanding of concepts and easy tricks to solve the problems and finishing the exam on time that is three hours is very important to crack the exam and go into The field of medicine . The syllabus for NEET exam is Indian CBSE class 11 and 12 science books that is physics chemistry botany and Zoology books and most of the students they feel physics to be so hard so rather than I know using your image in the video please have a paper and a pen and I think you must have all learnt about various tricks at the college level and if you say any formula to reduce the physics tips like in NEET exam questions will be so tricky and you have to use nearly 2 to 3 concepts at a time when you use these concepts it will take nearly 1to2 Page which is not possible because only three hours of time and 180 questions. So one minute for one question but if you just take to page today I want to answer than your time will all be wasted and I am sure that you cannot Kranti exam and hence there is a need for tricks both for chemistry physics and biology and I think that this channel is really so good so please so please make tricks and tips from the college level or any other tricks of your own kind and please help us because I have subscribe your channel and I have shared all your videos to my friends and relatives because I felt that it is good and I also promise my friends and relatives that conformally the TH-cam channel will make tricks for NEET exam thank you I hope that you will not ignore my request thank you so much
@Scott Dorfler To elaborate a little bit more, benzene is a molecule that displays aromaticity (in fact, it could probably be considered the prototypical aromatic molecule). Aromatic molecules are rings whose atoms are all sp2 hybridized which makes them planar. Furthermore, aromatic compounds have 4n+2 pi electrons (where n is an integer) that are conjugated and delocalized around the ring. On the other hand, cyclohexane is just a cyclic alkane that consists solely of sigma bonds and whose carbons are all sp3 hybridized (is non-planar). I hope this helps/is interesting!
@@Planejerle18 Very helpful thankyou. I'm not in school or anything just fascinated with chemistry/astronomy. I seem to easily grasp astronomy..... organic chemistry not so much. I'm too stubborn to just give up. The only way I seem to get anywhere with it is watch the same videos over and over. Read the same papers over and over. It works but not very efficiently. Wondering if you have any recommendations. Does this ever get any easier?
At 9:19, when we show the gauche and anti conformations, we accidentally changed the perspective when going from the bottom chair to the Newman projection for the anti conformation. As a challenge, try drawing the Newman projection of the chair on the bottom left of the screen looking down the marked bonds--you can check your work using our corrected image:
i.imgur.com/2DZtqRf.png
It’s tricky to visualize these 3D images, so kudos to our awesome viewer that caught this! Thank you for your continued support
please add more videos to crash course kids !!
I feel the learning, and it hurts. I'll be back for more.
Crash Course in 2012: “This is water. Water is good.”
Crash Course in 2020: “The methyl group moves into the axial position as carbon-1 pushes up and stays above the plane. The ethyl group has a lot less axial strain, therefore this a stable structure.”
Antenox that's my friend, what we called developing and evolving. But, this is still the surface, I sleep on a thousand pages book explaining about this thing, still it doesn't fit into my head. 😂😂
I didn't even read the second sentence ..😂😂
As someone who's only taken basic college chemistry years ago and has never used it I didn't know much at all. But I prefer videos to be way over my knowledge level than when they dummy it down.
Antenox dude as a long time crash course fan I find it extremely relatable.
There was a time, when I really want to flip the chair, while learning this, years ago. Now it has passed, and I meet this again in more entertaining and interesting way, I want to flip another chair. So jealous of this generation chem. student. 😂😂
As a biochemistry content creator, these video make my day ❤️🥺
"biochemistry content creator"? Hey, they the same name I gave my bong.
I wish i had these when i took this class! This would have made taking Organic chem so much easier
Thank you so much for this! I've graduated years ago (somehow it's more fun to learn when there's no pressure of exams, who would've guessed) and the axial-equatorial flipping was one of the things that I had a lot of difficulty visualizing. That animation at 11:30 helps a lot! Wish I had this around when I was still taking org chem.
Imagine if she wore hexagonal glasses as well xD
You're The Best! I'm Learning Organic Chemistry Right Now, So You Are Helping Me A Lot!
Thanks for the motivation to get out my molecular modelling kit again! It's been a while since I've played with it, and now I'm having fun flipping chairs 😄
Crash Course is once again coming in clutch, my chem final is tomorrow and I think I've learned more from these videos than i ever did from lecture
As someone who graduated three years ago, I am sad that this awesome content has only come to existence now.
Been waiting for this forever
I love content like this it's so entertaining.
I get the concept, but drawing the actual chairs and mentally flipping them to get the new conformations is frying my brain 😂. However you made it more clear than any of my chem teachers ever did so thank you!
Oh, that's why I love Chemistry. ❤🔥
#CRASHCOURSE IS CREATING MANY CRASH COURSE SCIENTISTS 🔥😄😄👍👍👍👍
My ochem proff used to get frustrated if you weren't a problem solver. He used to say If you're not part of the solution
you're part of the precipitate.
Science jokes can be 🤢🤢🤮 sorry what was I saying?
not even part of the precipitate if you were just "spectator ions"..
Saving in the Playlist for later. I love you guys especially when it comes to subjects like these
Wow that one was complicated. I love this and really appreciate people that are able to know and utilize this immense amount of science and math 😍
To the person reading this have a good day
I love this show
Thanks so much for good information
At 9:19, did you mis draw the bottom newman projection? When I visually turn the chair confirmation I see the green H as going to the bottom left and the CH3 going to the top left
You are a great teacher please never stop
Chair conformations were the trickiest part of ochem1
Holy crap. This video is awesome.
Congrats to hank and john green for airing on GMA yesterday!
Is there an error in the start of the video with the numbering going counterclockwise, or is this the in compliance with the iupac rules?
I hope you guys talk about high-red H-NMR and low-res H-NMR as well as C-NMR
I read the title as Cyclosexuals and I was like what the hell is that
So where does the energy for the chair flips come from? It's can't be doing it for free? How does it get the energy for doing such?
The energy for chair flips usually comes from the ambient room temperature (20 degrees Celsius is more than enough). If you were to subject single molecules of cyclohexane to very low temperatures, you wouldn't be able to see any more chair flips.
I'll come back in August when my semester of o chem starts lol
Check out khan's academy they have it more in depth
While I definitely recommend visiting again when class starts, it doesn't hurt to taste the subject matter now - even if it feels like it goes way over your head. If you recognize even a small portion of the terms/models/ideas it won't feel as daunting when you start studying them in depth. This works for me at least - its not the same for everyone
I'm in love with inntelligents.
Hey, you should order all your videos on playlists, so we can see them without looking for eachone separately, thank you!
Love it! 👍🏽👍🏽
huge fan
Did this channel and SciShow coordinate? Both talking about Hexagons and specifically Giant's Causeway
They both are run by the same team.
Love you. Thank you so much!
Sooo.... hexagon is the best-agon?
Oh my god I didn’t use my brain for such a long time this quarantine and me trying to understand this just showed how dumb I became.
Lol same.
I get the concept but I'm going to have to watch this at least 4 more times to remember the details. Download the app and use the flashcards. They help so much!
The purpleish background is so cool in her videos
Please make "Crash Course Biochemistry and Inorganic chemistry"
Please do crash course forensic science
0:41 what did you mean by "every number 2 is hexagonal" ?
Hex - a - gons
--Witches
And what would we do without
hexaflexagons. Like cool
10:43 I agree with you i will flip a chair
Hey! I love your show. Would you guys ever consider making videos on great composers like Mozart soon? I feel like that would be cool to learn.
So...Does your visual perspective change the molecule?
Was that a QM joke?
I love chemistry 😘😘😘😘😘😋
This is the best channel for quarantine binge watch for nerds.......🤓🤓😘
ok I'll say it - cyclohexane is not a proper hexagon, exactly because of the puckering, that makes it 3d. Depending on perspective and conformation it can also look like a rhombus (chair) or a triangle (boat). If you made a graphene-like sheet with fused cyclohexane rings it would be all crinkled unlike the flat graphene with fused benzene rings.
Mam i was waiting for ur upload ..when u wil upload videos so that i can revise previous one do upload more videos soon plz
The universe has a Hex on it!
Consummate V's!
Consummate V's !!
Weird that scishow dropped a video on the same subject minutes apart.
Well, they both are run by the same people so...
Or you can draw the Budweiser logo 6:53
Wow
1st love ur videos!!!!!!!!!
Really interesting! First to like and comment.
If they called it the chair conformation, why didn't they call the boat conformation the 'hammock' conformation?!
🥁🥁☄
1st love ur videos!
You sank my battleship...
Hmm. I was wondering when glucose was gonna show up then I checked wikipedia and I was like, oh I forgot about that Oxygen.
*Northern Ireland
united ireland bro
@@keyynab bawhaha
Very helpful
I’m looking and there’s no comments
I really wish these videos existed when I was in med school
hi
👍🏼
👍🏼
Yo
I didn't get the relationship between hexagon and Saturn 😅😅
Saturn's polar hexagon was discovered in 1981.
@@AndrewTBP thank you 😊😊
Huh?
My favorite CrashCourse Intro is still John Greene’s US History
First (To comment)
This is the best way to learn while we’re stuck in the house
Hello sir this is a really super video but one thing I wanted to request you is that please make videos for NEET exam well if you do not know about NEET exam then I am here to explain you about it and NEET exam is an entrance exam for medicine in India and nearly 10,00,00 people apply for the exam each and every year and it is still concerned that I do not know that whether this channel is Indian or some channel which is in abroad but please take my request into consideration and further on the NEET exam are conducted in exam centres and the total mark of this exam is 720 in which Biology which is the body carries 180 marks zoology carries 180 marks physics carries 180 marks and chemistry carries 180 marks so the total 720 maths and as India all now India is highly populated country and hence the competition for this exam is so hard and hence proper understanding of concepts and easy tricks to solve the problems and finishing the exam on time that is three hours is very important to crack the exam and go into The field of medicine . The syllabus for NEET exam is Indian CBSE class 11 and 12 science books that is physics chemistry botany and Zoology books and most of the students they feel physics to be so hard so rather than I know using your image in the video please have a paper and a pen and I think you must have all learnt about various tricks at the college level and if you say any formula to reduce the physics tips like in NEET exam questions will be so tricky and you have to use nearly 2 to 3 concepts at a time when you use these concepts it will take nearly 1to2 Page which is not possible because only three hours of time and 180 questions. So one minute for one question but if you just take to page today I want to answer than your time will all be wasted and I am sure that you cannot Kranti exam and hence there is a need for tricks both for chemistry physics and biology and I think that this channel is really so good so please so please make tricks and tips from the college level or any other tricks of your own kind and please help us because I have subscribe your channel and I have shared all your videos to my friends and relatives because I felt that it is good and I also promise my friends and relatives that conformally the TH-cam channel will make tricks for NEET exam thank you I hope that you will not ignore my request thank you so much
O.O
Benzene's less well-known cousin.
What's the difference?
@@scottdorfler2551 Heh, benzene is basically a cyclohexane with pi bonds.
@Scott Dorfler To elaborate a little bit more, benzene is a molecule that displays aromaticity (in fact, it could probably be considered the prototypical aromatic molecule). Aromatic molecules are rings whose atoms are all sp2 hybridized which makes them planar. Furthermore, aromatic compounds have 4n+2 pi electrons (where n is an integer) that are conjugated and delocalized around the ring.
On the other hand, cyclohexane is just a cyclic alkane that consists solely of sigma bonds and whose carbons are all sp3 hybridized (is non-planar).
I hope this helps/is interesting!
@@Planejerle18 Very helpful thankyou. I'm not in school or anything just fascinated with chemistry/astronomy.
I seem to easily grasp astronomy..... organic chemistry not so much.
I'm too stubborn to just give up. The only way I seem to get anywhere with it is watch the same videos over and over. Read the same papers over and over. It works but not very efficiently.
Wondering if you have any recommendations.
Does this ever get any easier?
First hehe :D
me brain no brain
I understand nothing: I will keep coming back and practicing till I can remove nothing from that sentence!
First comment get noob
Those who want economics series 2 hit like
0:07 You are WHAT?
I miss John and Hank
firstttttttt
is this English
I hate how fast this presenter talks.
I dont want to be a GMO.
Political correct placements to bore me to death now. That’s progressive.
Crash course buys subscribers