he pronouced that ok-ish its the entgegen part which took me a bit of time to figure out. he pronouses it engigin but its pronouced more like ENT-GEA-GAN
great video. i know this isn't related to the video, but i love going to these more scholarly videos and not seeing immature tolls comments everywhere.
I believe the E and Z naming convention is only used when there 3 or 4 substituents on the two double doubled carbons. If there are only one or two, then you would name the molecule cis or trans.
If you came over to my place and asked me what that molecule was, the first thing I'd say is probably something along the lines of "Who are you and how did you get into my house"
im not sure if thats technically still E or Z considering E/Z naming is only used when all 4 groups differ, thats just the way i learned so I could be wrong but i know cis/trans would be the names that are prefered
It seems that 'cis' and 'trans'so only apply when you have one functional group between the carbons you are compairng because the terms are for comparing hydrogen placement. You'll notice in the video that when a molecule is 'cis' or 'trans' the hydrogens are also 'cis' or 'trans' relative to each other. Therefore you cannot call a molecule with two functional groups on it 'cis' or 'trans' because there are no hydrogens to compare--only functional groups. So while the E-Z system is more widely applicable, both systems are equally correct to use regardless of age.
I think this is my favorite video. I've watched it several times, and I think it's because of the opening. "If I were to come over to your place and said, "name this molecule." My place? For some casual conversation about nomenclature? Well, sure!
Haha this video is awesome! As a german it's incredibly funny how you pronounce this words. I thank for you the video, just to correct you with the words it's: Entgeeeeegen (the pronounciation) and it's written "zusammen" the rest is absolutely fine thank you
corrections: -‘entgegen’ actually means ‘opposite’ and is pronounced “ent-gaeg-en” -it’s actually ‘zusammen’ (not zussamen) and is pronounced “tsoo-zamm-en”
@R2SweetTooth Rotate around the central bound? Both have double bonds, the pi bond between 2nd and 3rd C do not allow the rotation, so, trans or cis, it will not rotate, in this case.
Awesome video! Just wanted to point out, there's a slight difference between cis/trans and (Z)/(E) : when you have two DIFFERENT funcional groups on one side, it's not cis anymore, but still (Z). I was kind of confused by this at first. But I guess you talk about this more in the other video you mentioned. Also, love all the germans commenting about “how bad your german is“. I just thought your pronounciation was cute.😁 We're not here for freaking german lessons anyways.
Based on my study, E and Z are only applicable for such molecules that are trisubstituted. In this case, it's more comfortable to use the cis-trans naming, provided the two substituents are identical.
Thank you for your videos- they are great! I have a question pertaining to this one though. If both the "CH3" were on the right side of the double bond and the both "H", would this still be a Cis-But-2-ene?
Hence the statement "We will do examples on whether or not to label something E vs trans, or Z vs cis on the next video." He was just doing an introduction on what they mean.
"Together" is German is actually written "zusammen", not "zussamen" as you wrote in the video. :) Otherwise very nice video. Looking forward to the next one.
Hi I would like to say that you explained it very well, I totally understood everything . But I would like to add that I am German and the german word "entgegen" means "contrary to" or "opposite" . Bye
![COLOMBIA vs. CHILE [4-0] | RESUMEN | ELIMINATORIAS SUDAMERICANAS | FECHA 10](http://i.ytimg.com/vi/TDjN4W3yy1k/mqdefault.jpg)
Z zame zide
TogeZer and Epart
Olly Davis Nice 😉😊🌹
MsPerva lol after i commented this I got an E in my AS exam so it's questionable how useful that is...😂
Olly Davis But he explained it very clear ☺
MsPerva yeah but me and chemistry, we don't bond
If you were to come over to my place asking me to name those stuff first thing i'd say is "wtf!" LOL
Ayyy Caesar >:)
nah I'm pretty sure that's Gangster Gastino
GoOMMMuuuuu GOMomuuuu NOoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
@@jiren6637 Zatling Zun!
It is zusammen not zussamen and you made my day with your pronounciation. Thank You. You are awesome by the way
he pronouced that ok-ish its the entgegen part which took me a bit of time to figure out. he pronouses it engigin but its pronouced more like ENT-GEA-GAN
the sound of ur voice comforts me that i will do well in chem
you are absolutely helping me not fail. or not as bad as i would have. amazing how easy things are if things are explained well.
If you came over to my house and asked me to name this molecule, I'd kick you out.
Lol what if someone stops you in the street with a gun to your head, and your only way out is to name the molecule!?
Navjot Singh I would get shot
I'd love having Sal at home asking me questions like these.
i prefer 2-butene
+Dovahkrab When I was learning this, the fact that profs never named molecules the same way frustrated me.
Hero...exactly, makes things simpler.
Not the best if the molecule is complex
I dunno what would I do without Khan Academy.
Thank you so much...
great video. i know this isn't related to the video, but i love going to these more scholarly videos and not seeing immature tolls comments everywhere.
Can you please tell me how is the most stable z or E and why
I need it please
if i pass my course this year , you'll be one of the strong reasons , so think you
"If i were to come over to your place..." O_O love the introduction
Watching this 1 hour before my University exam and Khan you saved my ass! Keep up the good work!
I believe the E and Z naming convention is only used when there 3 or 4 substituents on the two double doubled carbons. If there are only one or two, then you would name the molecule cis or trans.
Best way to find every topic relate to ur sub Chem. Good
Does But-2-ene is the same as 2-Butene since our chemistry teacher recognize it?
James Piji Bulactiar Ya
@ᴀʟ☹ stop were struggling enough as it is
We were taught that it's called butene-2, but but-2-ene is really funny to say so I'm gonna use it in English.
The former method is wrong, but-2-ene is the new IUPAC name 2-butene is pre-revision IUPAC name.
If you came over to my place and asked me what that molecule was, the first thing I'd say is probably something along the lines of "Who are you and how did you get into my house"
What foreign languages are taught in American secondary schools?
im not sure if thats technically still E or Z considering E/Z naming is only used when all 4 groups differ, thats just the way i learned so I could be wrong but i know cis/trans would be the names that are prefered
I thought he meant, easy Naming schemes.. but he actually meant E and Z.
Great video but the German pronunciation went so wrong 😂
Wii be my friend
Lol first I was like what's this word until he said it's German I understood it 😂😂
Sal really enjoys saying these names.
It seems that 'cis' and 'trans'so only apply when you have one functional group between the carbons you are compairng because the terms are for comparing hydrogen placement. You'll notice in the video that when a molecule is 'cis' or 'trans' the hydrogens are also 'cis' or 'trans' relative to each other. Therefore you cannot call a molecule with two functional groups on it 'cis' or 'trans' because there are no hydrogens to compare--only functional groups.
So while the E-Z system is more widely applicable, both systems are equally correct to use regardless of age.
I think this is my favorite video. I've watched it several times, and I think it's because of the opening. "If I were to come over to your place and said, "name this molecule." My place? For some casual conversation about nomenclature? Well, sure!
uploaded 12 years ago but still is useful
the way i remember this is samzies... like the way a thirteen year old girl would say the word same. works for me
Haha this video is awesome! As a german it's incredibly funny how you pronounce this words. I thank for you the video, just to correct you with the words it's: Entgeeeeegen (the pronounciation) and it's written "zusammen" the rest is absolutely fine thank you
thank you !!
Thank U sir it help me alot
wish you had videos regarding cis and trans position on chair confirmations
wish you had videos regarding cis and trans position on gender confirmations
i like the way you pronounce "entgegen" :D
it´s completely wrong but it sounds so cute xD
and thanks for the video
thank you so much, never going to forget that now :)
so simple, thanks!
short, precise. Always handy
corrections:
-‘entgegen’ actually means ‘opposite’ and is pronounced “ent-gaeg-en”
-it’s actually ‘zusammen’ (not zussamen) and is pronounced “tsoo-zamm-en”
This doesn’t clear anything up for non-Germans lol
Thank you so much
@R2SweetTooth Rotate around the central bound? Both have double bonds, the pi bond between 2nd and 3rd C do not allow the rotation, so, trans or cis, it will not rotate, in this case.
Zusammen, not zussamen. Great video!
Awesome video! Just wanted to point out, there's a slight difference between cis/trans and (Z)/(E) : when you have two DIFFERENT funcional groups on one side, it's not cis anymore, but still (Z). I was kind of confused by this at first. But I guess you talk about this more in the other video you mentioned.
Also, love all the germans commenting about “how bad your german is“. I just thought your pronounciation was cute.😁 We're not here for freaking german lessons anyways.
Based on my study, E and Z are only applicable for such molecules that are trisubstituted. In this case, it's more comfortable to use the cis-trans naming, provided the two substituents are identical.
Thank you for the clear explanation
This video is wrong. Cis and Trans is when you're dealing with hydrogen. E and Z is when you're dealing with priority groups that are trisubstituted.
Sal is the best
thanks, i learned more than i should have!
😊Thanx!
Thank you for your videos- they are great! I have a question pertaining to this one though. If both the "CH3" were on the right side of the double bond and the both "H", would this still be a Cis-But-2-ene?
if they were on the same side, it would actually be 2-methylprop-1-ene or 2-methyl-1-propene
@@SuperSaiyaman3 wouldn’t it be 1-methylprop-2-ene?
@@SuperSaiyaman3in other words would you start the carbon main chain from the side with the double bond or the side with the methyl group?
LMAO, that German is terrible :P
entgegen means "against/contrary to"!! love the effort though.. love these videos even more!!!!
Wow this was so helpful thank you!!!
Khan academy is best..
Please make a video on this in bangla.So that,this can be helpul for me.
Hence the statement "We will do examples on whether or not to label something E vs trans, or Z vs cis on the next video." He was just doing an introduction on what they mean.
So it's different from 2-butene? Or are they the same?
Hey sal! Thank you so much fr the video. But what is the difference between conformation and configuration??
conformations are different shapes or orientations of the same molecule- configurations are different arrangements that require the breaking of bonds
Very good explanation
"Together" is German is actually written "zusammen", not "zussamen" as you wrote in the video. :)
Otherwise very nice video. Looking forward to the next one.
Thank uuuu
You are the best 👏👏🌹
holy crap thank you so much1!!
SAYED BROUGHT ME HERE!
Perfect
At first I had trouble remembering them. Then I realized E and opposite both start with vowels. Then Z and same start with consonants.
I have one question
If we have one chlorine atom instead of hydrogen atom in the same compound ,then how we assign priority?
dichloro dimethyl ethene
THANKYOUUUUUUUUUUUU
This guy is boss
E is for entgegen which is German for opposite, z is zusammen which is German for together
Hi
I would like to say that you explained it very well, I totally understood everything .
But I would like to add that I am German and the german word "entgegen" means "contrary to" or "opposite" .
Bye
"entgegen" maybe is better translated as "in opposition to". And right - "together" is written "zusammen" in german.. Keep on going.
Thanks a lot for the video, but it's "zusammen" for together
when i see Z i read it in my head like "Zis" since it sounds like cis.
theyre not always the same thing but it helps me remember what it is :p
How do you know if the element attached to a Carbon is a branch? Is it only a branch if it's Carbon? Could you have Halogens, H or NH2 as a branch?
having difficulty visualizing tans cyclooctene...plz help with a detalied structure...models are highly appreciated(provide link please)
How to give name if the other one of double bond is ethanol?
Wow 💝💝💝
thank you
i like this. niceeeeeee
Do you just have to mention cis and trans when you have an alkene?
Zussamen 😂😎 finally something is named in my mother tongue
Are they structural isomers ?
@Badushaz sal can! cgp books are good too
love your German
V nice.
Both correct, however but-2-ene is currently the IUPAC standard.
@dirtypritithings Same thing, some people write them in different ways.
haha oh my gosh how cute Sal pronounce the german words .. :D
the correct translation would be "opposite site"
so the single based hydrongen atached to the main chain is ignored
great explanation but wht is the use of german weird words
"Entgegen" means opposite of smt in this case
suammen so cute
The way you pronounced ''Zusammen'', it should be written like this ''Susamen''
1:06 "Hey Sal that's also but-2-ene!" :-)
do we call them diastereomers?
entgegen means opposite ^^
Why does the isomers behave differently chemically
Repeat after me... entGAYgen. No joke.
you spelled "zusammen" wrongly XD
Nice video bruh!
if i did it would have been funny
hahaha xD youre right, my mistake