9.4 Sigma Bonds and Pi Bonds | General Chemistry

Chad provides a brief lesson comparing and contrasting sigma bonds and pi bonds. The lesson begins with how to identify sigma and pi bonds in Lewis structures and thereby how to calculate the number of sigma and pi bonds in a molecule. All single bonds are sigma bonds, a double bond has 1 sigma bond and 1 pi bond, and a triple bond has 1 sigma bond and 2 pi bonds. Chad then shows how bonds are formed due to the overlap of atomic orbitals, and then expounds on sigma overlap and pi overlap. Sigma bonds result from sigma overlap, the end-to-end overlap of atomic orbitals (s, p, or hybrid orbitals), whereas pi bonds result from pi overlap, the side-to-side overlap of p orbitals. The lesson concludes with a description of the sigma and pi bonds in ethylene as well as a description of which atomic orbitals are involved in the overlap.

00:00 Lesson Introduction
00:40 How to Calculate the Number of Sigma & Pi Bonds in a Molecule
01:41 Sigma Overlap
03:21 Pi Overlap
04:37 Identifying Overlapping Atomic Orbitals in Sigma Bonds
07:10 Sigma and Pi Bonds in Ethylene

[BellaStevenson]

i can't believe this video only has 922 views. His explanation is so clear! I feel bad for all the Chem students out there who did not discover this channel yet.

[arash]

You explain better than 10 textbooks. Thanks

[yuu.kun]

No one explains as simple as you teacher. As incredible as always! Thank you.

[srikaryalam]

Thank you so much for this video. I really feel like I found a hidden gem with this channel!

[juliaislas]

Thank you so much sir, your videos are incredibly helpful, I'm currently in my first year of A level chemistry and found this topic impossible to understand when it was explained to me in school, truly appreciate it!

[cheesecakeboy]

i've been watching you since day 1 in gen chem and it's because of you that i've gotten As in all my tests so far. My finals this friday but i'm pretty confident that i'm gonna do well because of you and your amazing content. god bless you

[jesslynprawira]

sir chadd i cant express how much I'm thankful for uu I've watched a lot of videos but i still didnt understand, thank God i found your 9.3 and 9.4 videos to revise! you really teach things from the basics and make sure we understand thank you!!! def recommending u to my friends who r struggling in the class too

[mowwygp]

You're a bloody magician sir, Thank you!

[weezermeister]

thank gawwd for you sir! I keep getting the same unrelatable videos until I found this channel which is immensely helpful.

[MetaPera]

You teach chemistry very well and deserve millions of subscribers and millions of views. Thank you for your hard work!"

[dmath]

Woww God bless you brother this video helped me so much! The only reason I knew you were Christian was bc I was looking at your shirt and had to search it up because it definitely seemed like Christian apparel and it was haha! Thank you so much and keep shining for His glory through these videos and teaching!

[anthonybwalya]

Whenever I am looking for any chemistry explanation. I look up for you first. Only if that content doesn’t pop up from your channel do I go look elsewhere.
I can’t believe you’re this good. 💪

[ianwong]

I can't express how much this video helped 🥺I couldn't understand any of this in class, but it just makes so much more sense here

[benjaminadams]

liked and subscribed sir! I have my Gen chem final tomorrow, and you just explained this much better in 11:00 minutes then my professor did in 1 week. Thank you!

[BayuKervin]

Sir it was really impressive. You're so blessed with God's wisdom and intelligence. It had been my toughest topic until i found your videos. So thankful to you 🙏

[carlafernan]

This has helped me so much thank you!!! Quick question: Does having a lone pair count as an electron domain?

[rainbowtoblack]

i have a BS in biochemistry, and have never understood sigma and pi bonds as well as I do now, thanks to this video!

[AbbyPreston-ygjb]

amazing video! using it to study for my chem final

[PesterNester]

Very succinct explanation. Thanks so much.

[pgm]

I could watch your chem videos all day for fun!!! sad my che teacher cant do the same though :(