Cis-trans isomerism | Alkenes and Alkynes | Organic chemistry | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now! www.khanacademy.org/science/o...
Cis-trans notation can be used to describe the configuration of a double bond with exactly two substituents and two hydrogens. If the two substituents are on the same side of the double bond, the configuration of the bond is cis. If the two substituents are on opposite sides of the double bond, the configuration of the bond is trans.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
Donate or volunteer today! Donate here: www.khanacademy.org/donate?ut...
Volunteer here: www.khanacademy.org/contribut...

[@SaucyNight]

I have had this explained to me before but i can say with certainty that this video is most responsible for making this a concrete idea in my head, THANK YOU!

[@hinaziqbal8116]

You guys have the best videos out there. Perfect and on point.

[@ibrahimmahfouz5710]

i feel like a boss after this video hhhhhhhhh

[@Morrowindur]

Thank you a lot!!! I got an A because of this video- thank you a bunch!!

[@ryanagar1114]

Did you just assume this chemicals formula?

[@m.r.d4550]

very simple! thank you so much

[@_tatusha244]

Great presentation! Thanks a lot :)

[@reemq4646]

thank you .. this video is really help me 👏👏👍😙

[@sardemari]

Nice, I think I got it now ! Thank you

[@sandrozernicki]

In the minute 3:50 the last alkene is not appropriate to use Cis-trans connotation. It is (E) because when you have different groups, we use the pre log ing connotation and is more appropriate for this example.

[@anaseshmela8512]

Yes, I'm confused about that one. Isn't the propyl group is stronger than the ethyl, and the other ethyl is indeed stronger than the methyl. But it seems he's only considering cis to be 2 identical groups on same side.

[@SHocKW4vE949]

thanks man!

[@irgd]

That’s was so helpful! Thank you Dr 💕

[@user-we2ch9eh3q]

You make chemistry So amazing

[@PonzooonTheGreat]

So how come if we have a Cl and Br on one side of the DB and and H and Cl on the other side it is called Z??

[@sudarsan.r5985]

vera leval

[@hamps9285]

0:29 it’s but 2 ene

[@Camerz]

both are correct.

[@emsci]

2-butene is old iupac pre-revision whilst but-2-ene is post revision

[@grandtheo]

I feel like a chemist after this vid

[@ivanduy5275]

+Theo Tidiane I don't think so .

[@mila8252]

lol Ikr!

[@genuinegames3478]

How do u know if it's ethyl or methyl?

[@lukeshsundar]

Methyl has only one carbon and three hydrogens, whereas ethyl has two carbons and five hydrogens. Meth means one. Eth means two.

[@utkarshmishra4082]

0:40 I think it will be but-2-ene

[@mk-uv5lk]

Doesn’t matter either one works

[@ED1THMAX]

nic

[@muhammedali6941]

Wouldnt the first compound be but-2-ene?

[@bad8592]

its the same

[@hamps9285]

Bad no it’s not, number before word root is used for prefix not for suffix

[@shafikabdulkarim8442]

[@rjames76]

Cis and trans sounds like SJW talk lol

[@Captain_JackSparrow..]

Any Indians

[@7modXx]

did you just assume the butene's gender?!

[@tonyisgonetomorrow]

talk quieter, this video is way too loud

[@lucasm4299]

tonyisgonetomorrow
Lower your volume