Polar & Non-Polar Molecules: Crash Course Chemistry #23
ฝัง
- เผยแพร่เมื่อ 3 พ.ค. 2024
- Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and categorize them. One of the most important of those classifications is whether a molecule is polar or non-polar, which describes a kind of symmetry - not just of the molecule, but of the charge. In this edition of Crash Course Chemistry, Hank comes out for Team Polar and describes why these molecules are so interesting to him.
You'll learn that molecules need to have both charge asymmetry and geometric asymmetry to be polar, and that charge asymmetry is caused by a difference in electronegativities. You'll also learn how to notate a dipole moment (or charge separation) of a molecule, the physical mechanism behind like dissolves like, and why water is so dang good at fostering life on Earth.
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
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Table of Contents
Charge Asymmetry & Geometric Asymmetry 01:33
Difference in Electronegatives 01:49
Hank is Team Polar 00:33
Dipole Moment 03:49
Charge Separation of a Molecule 04:12
Like Dissolves Like 04:41
Water is Awesome 05:10
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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
Hank: "If electrons were teenage girls, flourine would be niall horan."
Me: it all makes sense now...
liked the video only for including niall horan
Too funny for the examiner. Dang this education system.
Amanda I see your spell check was not working. I wonder what kind of bread you can make with "FLOURine"?
cool
apparently im not a girl
Eminem: im the fastest rapper alive
Hank: hold my glasses
aiman bahrim beautiful
Busta Rhymes would be faster
LOL i've always thought he can probably say 100 words in 2 seconds if he tried.
@@catmouse2882 true
It should've been HOLD MY BOND
I feel like if more chemistry teachers referenced one direction I would understand everything so much more
Imagine dumping a bucket of water on someone and they just ...dissolve
Steve Anthony Teves the wicked with of the east
@@margueritechastain6093 i thought it was the west
I blinked and missed the whole video.
You blink for 10:45 minutes?
@@InvinciblePepe good one
Just adjust the speed to 0.75- thats what I did.
nobody is smart anymore, I'm doing college level chemistry and this is a good speed
Wow. Talk about a waste of your life.
Wish I could learn as fast as he talks.
I can....
Me, too...
1- says one direction
2- i think about them
3- i research about their break up
4- i finish my research
5- its time to go to sleep
Just STARTING to learn this... and this went SO fast - it was confusing. I think this is more for people who are SURE of a concept and just want to review before a test, than it is for those just learning about it and want to understand the concept from the beginning.
I'll be back after I'm SURE of the concept.
+Mc Kenna I use this for review. :P
Bob John
Exactly. As a review... not an intro
yeah, it is definitely helpful if you have some idea about the concept. me, fit example, am watching these videos to get a recap on what I wrote
+Mc Kenna I think Khan Academy does a better job of introducing you to new concepts, including this concept, because I found the Khan Academy one much easier to follow. There are no graphics.
AvatardShwag
The greatest Biology, Anatomy, & Physiology teaching videos I have found on You Tube are from a college asst professor out of California named Wendy Riggs. (Her channel is called Wendy Riggs) She explains things so clearly that I understand them MUCH better from her than with my college professor. Carrying a 98.4% in Anatomy and Physiology I this semester...and THAT miracle is pretty well because I found ;Wendy's channel... and, of course, LOTS of hard work.
Let me sum it up so you can let it sink in:
Polar molecules:
-do not have symmetry in their chemical formula
-may be bonded with Hydrogen
Nonpolar molecules:
-Have symmetry in their chemical formula
-may be composed of only 1 element
-may only be composed of Hydrogen and Carbon
too complicated, just gonna get that F tomorrow
omG lol
mood
same
Did u get a F
HighAnders same
For those who struggle with the speed of him talking try setting up the speed at 0.5 in the settings on the bar below the video + the bonus of Hank sounding vaguely drunk
Sasha S For some reason, my setup totally ignores that setting. Must be Android.
+Sasha S haha 0.5 is way too slow, i think they need a 0.75 option!
+Sasha S HAHAHA he does sound vaguely drunk! Hilarious!!! :D
+Emiss esp. the line "[...]polar is in my humble opinion[...]" xD
+Sasha S TRY TO SET THE SPEED AT 2.
I came here to escape one direction and focus on my exam WTF YO
+Mary ikr
BRUH SAME-
The 1D analogy was superb.
Extremely
To those who are having trouble keeping up,(I am not making fun of I simply comment to offer advice), turning on the captions can help with absorbing all of the information. Also, get used to the fact that your not going to always get the concept the with the first explanation,(Especially with Chemistry and the b**ch particle, AKA the electron) and that is why the rewind feature should be used often. Another thing to remember is that this is meant to be an overview meant for consultation, not for in depth learning of the concept being taught in its entirety. I hope this helped.
Here again I came here thinking of studying
And there's One Direction!Great wish me luck I have an exam.
so i stopped focusing on 1d to figure out what my chem homework was about and apparently i can't escape them help
+Kalley Laso so ur an asian luver i see
+JC Lopez what???
Kalley Laso u luv asians judging by your picture
+JC Lopez that doesn't necessarily mean i love Asians, i could just love the one guy
Kalley Laso nah u luv asians
Accurate. Thanks Jan.
Sorry for the mix-up everyone, we will try to be more diligent in our proofing in the future.
Killers: Using weapons
Me, an intellectual: *Dissolves my enemies with water*
2:44 The two elements that are highlighted when talking about chlorine and bromine were not actually chlorine and bromine they were carbon and boron the symbol for chlorine is Cl bromine Br boron B and carbon C
was just gonna say this
As corny as it sounds, I want to thank crash course a lot for chemistry because it helped me get through my chemistry exam when I was having a tough time studying on my own. They made it easier to understand and made it seem more enjoyable, thank yall so much
A ton of people would disagree with you, saying 'He speaks too fast'.
It helped me a lot too. I love CrashCourse!
Bryan Cotto You can slow down/speed up the video on the computers
Yo in the future you can do that on mobile too! 😁
@@leannekennedy6724 in the future 😂😂
MY DIRECTIONER'S HEART 💜💘💖💞💗💕💘 *gotta love chem after this*
i love how hank mentions the boys in so many videos, you can try escaping but hank is the electron to the 1d atom that will attract u. SHOOK
I actually like how he talks fast... It means I can learn more within a limited time space.
When you're trying to focus on the video but MITAM ad keeps popping out on the side then suddenly Niall Horan came out of nowhere
+Johmaelein Hazel um.. nah m9
samee!!
I think a correction is needed at minute 10:00.
Green shoul've said: A molecule needs to have both charge asymmetry and geometric asymmetry to be **POLAR**
Please certify if I am right
I discovered this channel a few days ago and I love it, but I feel there may have been a couple of fairly significant slip-ups in this video. Correct me if I'm wrong, but Hank says water is able to dissolve virtually anything remotely non-polar. Should he not have said that water is able to dissolve virtually anything remotely *polar*?
Honestly, people may find this confusing... but it helped so much more than my actual chemistry teacher. I leave class not knowing wtf is going on. CrashCourse helps put things into perspective for me
I greatly admire the meticulousness of the animators to animate even the reflection of the flag pole against the desk.
These videos explain some concepts that I just couldn't fully wrap my head around by reading about it in the textbook. Thank you so much for clearing things up with this informative and funny video!
Put your hand up if you're more confused now for having watched this video.
kinda
😭
yeah :(
hahan9 lolol
I kinds get it now but no thanks to this video
I am watching this in 2019 and realizing how irrelevant and unrelatable the 1 direction references are even though they were the sensation of the time at the time of this video(5.5-6 years ago)
dumb comment in 2020. totally irrelevant
Should have stuck to References of the Beatles, cant go wrong there.
@Olivia Saklofsky you are absolutely correct
Who?
LOL.
People a year ago would have never knew corona would be here to save us from school
yup. small mix-up with thoughtcafe! we've annotated to point at the right elements
I love the metaphor with Niall. lol
The polar bears made me sad :'(
You sir, increased my passion for chemistry even more and more! This was highly enjoyable, thank you!
Please do crash courses of physics! You're so helpful with everything else: pretty please?
+Tejal Singh they're starting one!!
+Hannah Barth On January 29, 2016, the Crash Course Tumblr confirmed that the Physics course will debut in late March, hosted by Dr. Shini Somara.
+Tejal Singh Its up now, if you didnt know. :)
+TwoTacosForPaco Thanks
Annotated to point at the correct elements. Had a small mix up with the graphics team!
The speed is challenging, but it pushes me to understand more thoroughly/quickly (even if I have to pause it to digest 3 seconds of info). I never really took Chemistry in high school, so these CrashCourse videos are saving my college butt! Thank you!
1. electronegativity difference 0.5-1.6
2. geometrical asymmetry
ukyee I thought it was 0.5- 1.9
ukyee waaaait our teacher says 0.5-1.7 hmm………?
Frick I have to answer this question too
People talking about “too fast”....it is a CRASH course, goddamn it; not a “Che-M-istry for Dummies” book.
you so mean Q.Q
I watch this with the speed of 2 -_-
Sacya Sayaca 2 what? mention the unit man!
shut up
Mehveen Hussain 2x the normal playback speed! The unit is 2 sec per 1 sec of video time, for example.
Change speed to .5 for best results.
how so you so this?
Hilarious- well played, Dallas.
CHM MOOC lol he sounds drunk right?
i finally understand what he's saying now.
i had no idea you could do this! so many potentially comical moments unlocked!
I just needed to finish my chem hw and finally tore myself out of the 1D videos and guess what? Niall is back. Jesus help me. WHyyyyyyyy all I wanTED Was to fiNish my HW.
my boys were mentioned. Who knew that Chemistry would be so awesome!
This guy has helped me through biology and chemistry for years!! HE IS MY SAVIOR!!!
Love the way he incorporated one direction into this. Hhha!
Didn't see that coming. Thanks.
ONE DIRECTION AND NIALL HORAN REFERENCES. I CAN'T. YOU'RE THE BEST HANK.
I was really struggling with polarity in my Ap course but this finally made it click, thanks! :D
I rewatched this is it makes sense again. You retain some material from the first time watching, but a second time it is easier to understand. Thanks hank!!!! Saved my grade
NIALL HORAN OMG. i love you hank.
These chemistry videos are great but real confusing because he is too fast
Change speed to .5 or .25
I can't concentrate when its on .5, it's like he's a drunk chemist it's hilarious
Ruchelle B lol so true
Ruchelle B do it on 2 omfg
Epicness168 watch it on 2, and then 1 doesn't seem so fast.
When i was watching this chemistry crash course back years ago, hank had only a hunder thousand views and i thought people should appreciate this crash course more. Im so happy each cc chemistry videos has more than a million views now.
This is a lifesaver. I have my Gen Chem I exam today, but reading doesn't let the information sink in for me. As soon as you started to explain, everything started to click together while still being fun to watch! It's a great way to review things that you studied, but don't quite get.
This is like a million percent awesome. The polarity of molecules and how they basically shape our biological lives is just. so. cool. DFBTA :)
This helped me soooo much. So much easier to understand than the way my teacher describes it. Thanks :)
Thanks Hank! I always read my textbook and take notes and then watch your videos on the same topic. They tend to line up really well and that's extremely helpful. While your videos don't go as in depth as a textbook does, they do help set a good foundation and a summary so I can build upon it. DFTBA!
This is awesome. I love your personality, it makes this all easier to listen to and UNDERSTAND.
And yes, I had to watch it like six times before I got everything dialed in my brain.
Great, your better than my professor but you explain too fast I wish you can take it a bit slow. The speed is challenging though it makes me listen attentively. But seriously your awesome it's really a big help. Thank you so much. :)
I came here for one and one reason only. One direction reference. I don't even have Chemistry.
I actually love this guy. He makes studying so much more fun and easy to understand. Thank you!!
These videos are a great addition to my academic course! I love listening at 1/2 speed, slows down the material enough to really take in the information and a bonus it's no longer "crash course" more like "drunk science" ;)
I think you should go over that H-Bonds can only form between H bonded to N, O, or F and nothing else
+Rsaramallac Good point
I love Crash Course Chemistry. You guys seem to be picking topics that I'm currently studying at school, like in the last two weeks. Best exam revision ever :)
Oh my gosh! These videos are a great find just before my exams. Hank, I think you may have just saved my chemistry grade with these great, easy to follow videos!
You just made me fall in love with chemistry. Great job! You're videos are truly awesome!
Chemistry, I think, is the most beautiful study, because it's study of everything. Hank made it to me even more beautiful.
No, you're wrong. Physics is the most beautiful area of science, as it is the science that can explain everything, even Chemistry.
I like both, chemistry and physics, but for me they aren't so different. I like to think that chemistry is just a little part of The Greatest Science, called physics. And this part (plus quantum mechanics) is what I like in physics.
MagisterJake
Actually I think you mean math (and I'm saying that as a Chemist).
gtd3765 Math is the logic of something, whether it's real or not.
MagisterJake nice try sheldon cooper.
I survive off of these videos to learn things that my teacher fails to teach (basically all of it). I find the speed perfectly funny and it isn't a problem for me to simply pause the video, write a couple notes and continue on my way. Thankyou for making these! I watch a lot of crash course simply for the fun and interesting topics, or like now, to survive yet another year of school.
Honestly, changing the speed is so helpful for these videos. Some of them I can watch at 1.5 or even 2 if it's something I'm familiar with and just watching for anything unfamiliar. For the ones I'm less familiar with, I usually watch at normal speed but keep my hand on the space bar to pause as soon as he says something new. Good luck to everyone! :)
I have had this lesson in various years of school and each time, I return to this video. Great video
I'm not zoned out or anything and I still don't understand what he's saying.
This really should be used in schools. Crash course is the new Bill Nye for me. :)
This helpped me so much and wasnt a boring video that I would fall asleep watching. Nice! Loved it
This was VERY informative thank you!!!
Wait a minute candy bars, you know candy bars, they usually come in a wrapper, just like you wrap a Christmas present and Christmas happens when it is cold, cold as in Alaska and in Alaska there are Polar Bears....polar.. Polar Bears... Po... Polarity. Yesss.....I understood now.
9:32 "that's better"
Me : 'Nooo, that's butter' 😂😂
I found that pausing the video and writing down main words with his fun descriptions has been a super good way of solidifying parts I was previously very confused about. Thanks again Crash Course! \o/
Thanks Hank!! This was incredibly useful for my upcoming bonding test!
Still sounds like he's speaking another language.
Chemistry IS another language. I hella tripped when a tutor told me that its like we are learning another language. Totally changed my approach in how to study. I stopped trying to figure out why it is what it is, it just is. 🙄
2:13
hehe... id id. 1D
Great video man! Learnt a lot from it despite the quick talking speed. Gotta pause and replay a few times, but worth since its so funny to watch at the same time also.
Thank you so much!!!! I'm trying to study this part recently and this really helps >
Thanks Hank, you're a saviour
0:33 I lol'd.
But wouldn't it have become polar once the left head moved? It's no longer symmetrical!
I understood it and it was perfect. Thank u HANK
u r totally awesome sir ... u make things so quick and clear that a person never lose his or her interest ... keep it up . just love to watch ur videos
Learning chemistry makes me feel like Heisenberg.
Are you certain?
I have an uncertainty towards your statement.
You're goddamn right!
I'm glad a ton of people got the joke lol
uncertainty principle ayyy
I started this last week and I still am super confused.... HEY AND THE TESTS IN TWO DAYS YAYYY
*throws science book out window* *jumps out a minute later*
i didn't understand much of it the first time had to slow it down, so much is taught in one video awesome.
And now I understand the last 5 classes of my Advanced Chem course. Thank you Crash Course!
He's all over the internet..... I always happen to stun upon him...
He really is
stumble**
It's called a crash course for a reason: it's not slow
i think the speed of how u talk is fine, it helped alot and im pretty sure now the info in my brain is covalent, and i wont be forgetting anytime soon
I love your videos they really help me to understand chemistry concepts keep doing what your doing :D
It actually helped despite all the comments saying otherwise. Good for me ig
Debería tener subtitulos buenos en español, están muy bien explicados sus vídeos :(
This is so helpful. My teacher isn't very good, and this cleared basically everything up. Thank you!
I like these. Even the speed. I prefer that you cram a lot of info into one segment than everyone else who takes forever to get to the point.
"It's pretty easy to see when you're just looking ATOM!" Anyone else catch that at the start?
Jessica Lindly what did the gold atom say to the silver atom? Aye you! (Au) see that? I, too, can be clever PERIODICALLY! Somebody stop me
+Christopher T Ross J Thanks 4 that pickup line buddy:D
Pravin Pandey linear banter dialogues(one liners) I'm positively good atom loL
damn you're good! teach me mate
Pravin Pandey I'd tell you to sub but I'm too busy shedding the light of clever comedy to post anything of interest...except If you type my name in the search bar, you could see a barely viewed video of me doing some pretty sweet gymnastics tricks in poor quality (due to the video being ancient, shot by a phone too old to remember) but nothing comical loL
4:17 oh my god did not know this why is my chemistry teacher so bad she didn't teach us this!!!
This is brilliant; really really good. My students find this most helpful. Maybe have podcasts that I can barrage with them on social media?
Fun video! I love the crash course videos, even though I’m used to them as history videos.