Intermolecular Forces and Boiling Points

Рет қаралды 2,257,640

8 жыл бұрын

Why do different liquids boil at different temperatures? It has to do with how strongly the molecules interact with each other through intermolecular forces. Find out all the different ways, and how to use them to make predictions about matter!
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Пікірлер: 1 100

@ProfessorDaveExplains 5 жыл бұрын

Guys, listen! In this video, I state that Van der Waals forces and London Dispersion forces are interchangeable, that's actually incorrect! Dispersion forces are momentary dipole-induced dipole interactions, the weakest, whereas Van der Waals interactions are an umbrella term that includes dispersion forces as well as any other interactions involving dipoles, just not interactions involving formal charges. Sorry, my fault!

@biologistsnotebook6892 5 жыл бұрын

Yeah! I was a bit confused when you say that.. But , thanks you've recognized your mistake. No one is perfect, though. In general , your videos are the best.

@afnansaqib8345 5 жыл бұрын

No matter.All is well.I was just confused.Thankyou for recognizing ur mistake. As(to err is man).

@maxomax9039 5 жыл бұрын

u are my role model

@MrFrezeeTr 5 жыл бұрын

Also can I ask does ion-ion isnt intramolecular interaction? I mean ionic bond and ion-ion isnt the same thing?

@ProfessorDaveExplains 5 жыл бұрын

when discussing ion-ion interactions, we are referring to the interactions within a lattice of many repeating formula units, so we would call this intermolecular, as there are not really any molecules to speak of.

@jackquinn9933 3 жыл бұрын

POV: You have an exam today

@woeisme-mi9fr 3 жыл бұрын

(sigh)... You are correct

@marieviola7691 3 жыл бұрын

POV: you still dont understand

@mingdishang8409 3 жыл бұрын

remove the camera in my home

@Sam-dr6nj 3 жыл бұрын

Sadly tomorrow I am going to kill my self

@user-md3is4dq2d 3 жыл бұрын

@@Sam-dr6nj done it yet?

@ArkTheGreat 7 жыл бұрын

Thank you chemistry jesus.

@frogsincorporated 7 жыл бұрын

I can't begin to describe how accurate this is.

@easygoing_1956 7 жыл бұрын

ArkTheGreat You mean Cesare Borgia.

@sabrinaakababrina 6 жыл бұрын

your comment made me cry

@evanarcangel3974 6 жыл бұрын

Amen

@bittachowdhury4242 6 жыл бұрын

test in 5 minutes wish me luck

@euscieu4246 7 жыл бұрын

I wish I found you when I was in high school. I'm a medical student now reviewing my chemistry to strengthen my knowledge of biochemistry and man are you great at teaching! Some concepts were not that clear before, yet you explain them so clearly. I've had so many eureka moments 😂 Thank you so very much!

@ProfessorDaveExplains 7 жыл бұрын

woohoo! happy to help!

@aryasinghthakur2554 5 жыл бұрын

i feel ya (eureka moments) 😂😁

@Ferb747 5 жыл бұрын

EuSciEu How did you revise for your A Levels?

@sonicx254shere3 Жыл бұрын

@Anonymous oh thats the dipole, a sorta interaction(or force) that develops when one of the participating atoms attracts the electrons to itself more than the other atoms This happens when its electronegativity(how much an atom attracts electrons) exceeds the other atoms by a significant amount, thus causing a sort of net force to develop due to the uneven attraction Where, and why(more importantly why not) it occurs in certain molecules over others is already covered in the vid, but i hoped i heloed!(and was right in all that i said)

@offthepathworks9171 4 ай бұрын

yeaa, ridiculously good.

@aadithyahrudhay2269 5 жыл бұрын

Hi Professor Dave. As a ninth grader, it's very hard for me to find what happens at a molecular levels- be it for such chemical bonding or even physical phenomena such as refraction. This is because frankly people don't care and make the effort to understand; or because some explanations are too complex and beyond my level. Hence, I'd like to sincerely thank you for uploading these helpful videos. Without all the glam and hype, you explain concepts in such an easy to understand manner. In fact, I'm really surprised that not many people know you. Whenever I search for a concept in KZfaq, I make sure to specify your channel! Thanks once again! A.H.A

@abdulghafoor6610 4 жыл бұрын

Mee tooo

@aadithyahrudhay2269 3 жыл бұрын

@@joshpatra Thanks Josh, will do! I already do that for a few topics so...

@aadithyahrudhay2269 3 жыл бұрын

@@Metal_Master_YT Oh lmao that's nice... I'm in twelfth right now, this was some time ago :)

@aadithyahrudhay2269 3 жыл бұрын

@@Metal_Master_YT Thank you. Same to you, and all the best :)

@excelery3125 Жыл бұрын

its been 3 years how are you doing now

@brandonfontenot3406 8 жыл бұрын

Professor Dave, I do believe you just saved all of my AP Chemistry students.

@ProfessorDaveExplains 8 жыл бұрын

+Brandon Fontenot happy to be of service! if you could ask them all to subscribe that's all the thanks i need!

@ethanjordan6914 8 жыл бұрын

+Brandon Fontenot if thats the case brandon then you need to quit your fucking job

@donnywalker6068 7 жыл бұрын

lmao

@pankajtopre148 6 жыл бұрын

amen .

@maxmocs5008 4 жыл бұрын

@@ethanjordan6914 I like how this reply has the exact same number of likes as the original comment

@khoale7554 2 жыл бұрын

I swear just ten minutes listening to you is just somehow much more helpful than two 45-lmin lectures combined, just to demonstrate a SINGLE POINT. Thanks a lot, professor!

@olive_1a 8 ай бұрын

no seriously.....my chem teacher just uses materials from another teacher...and just wanna say thank you for making these videos :") so straight to the point yet understandable! i have a quiz tomorrow, and this is really helping currently. hope you know you saved so many students' grades making educational videos like this

@zulanova1209 Жыл бұрын

Chapters: <a href="#" class="seekto" data-time="34">0:34</a> Ion-Ion <a href="#" class="seekto" data-time="48">0:48</a> Ion-dipole <a href="#" class="seekto" data-time="116">1:56</a> Dipole Dipole <a href="#" class="seekto" data-time="186">3:06</a> Van der Waals / Londen Dispersion (LDF)

@yellowbacon69 8 ай бұрын

Thank you very much

@orderingfoodwgoogledoxesu3113 5 жыл бұрын

Most underrated Channel on youtube! Thank you Dave, you got me through college (I am a verbal and visual learner), I am doing analytical chemistry now, working on HPLC-MS analysis of oil samples in the Arctic environment.

@ProfessorDaveExplains 5 жыл бұрын

rock on!

@kaumadinagahawatte9237 Жыл бұрын

Hai Prof Dave, Im a teacher/ lecturer in chemistry and currently doing my chemistry education masters as well. Thank you so much or your videos. We use ur videos to understand concepts much easier also it helps me in teaching school level students too. Mainly because u touch the fundamentals which even most of the chemistry teachers does not explains. So thank you for helping me to improve my knowledge in chem as well as to be a good teacher in chem. God bless you....

@69bitboy 7 жыл бұрын

I have checked out different IMF's videos, and yours is the best! It was extremely coherent in the way you connected everything. Plus the review at the end was super helpful. Thanks, Professor!

@stevensteven6091 9 ай бұрын

Bro Mr. Professor here is saving so many generations. I see past comments of him saving students, he just saved me. Who reading in the future has perhaps just gotten saved even if it's not this specific video. We appreciate you so much

@nyluong5427 4 жыл бұрын

I love listening to your videos while driving. I spend 2 hours commuting between home and school everyday, so studying while driving is a good way to save time. Your lessons are so detail and clear that I can understand without looking at the videos. (Unlike Crash Course, too fast and overwhelming) Thank you!

@marcorojas7875 7 жыл бұрын

Professor I have my AP Chemistry Semester Final in a few weeks and I am going to be binge watching your videos. You're awesome. :D

@big_e_3 4 жыл бұрын

How'd it go?

@JakeOgle1994 8 жыл бұрын

My text book makes these simple concepts so complicated. Thank you for the simplification! New Subscription!

@d76doc 7 жыл бұрын

i didn't know russel brand new chemistry

@hiddens2346 5 жыл бұрын

JEEESSUUUUS

@sahithikadari187 Жыл бұрын

I honestly respect you for making the videos while you may or may not also be teaching classes-

@ukkomies100 7 жыл бұрын

Your intro is the meaning of life😆

@ProfessorDaveExplains 7 жыл бұрын

what a lovely compliment :)

@greywolfxx1 7 жыл бұрын

chemistry is FON! way to remember hydrogen bonds

@raghavgarg1747 7 жыл бұрын

it does. example : chloral hydrate is one of the only vicinal diols that exist. that is due to chellation only

@venkatachalamviswanathan3950 6 жыл бұрын

mmm ppp it's charge to volume ratio isn't as high as fluorine, oxygen or nitrogen so the charge is spread out and effectively diluted

@rabijamali6321 5 жыл бұрын

Lindsay G. Please don't.

@Adriel_HD 5 жыл бұрын

ohh yeaa

@nickb9731 5 жыл бұрын

Or F NO.

@kentezekielomega 3 жыл бұрын

POV: You watched this many times but you still don't understand it

@bullseye3054 3 жыл бұрын

😂😂

@xtraxearthling 3 жыл бұрын

Maybe start slow and touch up on key terms first like dipoles and covalent bonds, etc. SOOO much fancy science vocab! but you can do it!! :D

@Drforeverok 7 ай бұрын

lmaoo this shit pisses me off watching this guy

@anvi8189 2 жыл бұрын

As always great work Dave, thank you so much

@lakep7798 Жыл бұрын

This was FANTASTIC! Super clear. Thanks, Professor Dave!

@caloz.3656 3 жыл бұрын

these videos are so perfectly well explained it's carrying me through ap chemistry. thanks a lot!

@beaubarrett1355 4 жыл бұрын

i appreciate these videos so much! You're helping me survive CE Chem!! thank you a thousand times!

@fariborzshokoofh2090 7 жыл бұрын

This is the most articulate professor I have ever experienced. Great

@StudyWithM3E46 6 жыл бұрын

subscribed because of how clearly you explain concepts and the fact that you comment on here! Great way to show youre active and you read comments and open to feedback. thank you!

@ProfessorDaveExplains 6 жыл бұрын

gotta take care of those subscribers!

@maximgorgan9416 2 жыл бұрын

Thank you, professor Dave! The visuals really help grasp the topic!

@josephcourtade9833 4 жыл бұрын

Thank you Professor Dave, my chem teacher is not the best and you are doing a wonderful job filling in for her failing. I would be failing without you.

@prodigygaming802 5 жыл бұрын

<a href="#" class="seekto" data-time="4">0:04</a> best intro ever.

@newmoonprincess 5 жыл бұрын

THANKS SO MUCH and the little quiz at the end was tremendous help!

@andreahenry838 7 жыл бұрын

Thank you Prof. Dave. I am learning Chemistry for the first time.

@connorwallis8884 7 жыл бұрын

Really cool to see someone help others like this on their own👍

@amanrubey 7 жыл бұрын

love you !! I loved the last part (comprehension) green and black colour just won my heart

@paupausings1269 Жыл бұрын

This helped me review for my Chemistry 11 finals and I actually had so much confusion with this topic. Watching this video made everything clear. Thanks so much, Professor Dave!

@jennlarsen6119 2 жыл бұрын

Love your video, I am working on a project on boiling point for geochemistry and you helped put the pieces together. Thank you so much

@MegaCodeman420 6 жыл бұрын

These videos are great. Thank you so much chem 112 is kicking my butt especially molecular orbital Diagrams

@julianmiguel6496 7 жыл бұрын

Bless your heart for saving my life in chemistry! Thank you!

@KathleenLouisseQAchas Жыл бұрын

You just made me understood these concepts better than my in-person class. Thank you for uploading this!

@alexandrmxox 2 жыл бұрын

Seriously thank you so much for these videos, I have been basically teaching myself Chem and I have learned more from your videos in one day then the entire month and a half I have been in school! Thank you!

@lucapetrescu6990 6 жыл бұрын

Chem test tmw... thank you chemistry jesus. You have once again explained this better than my teacher

@avreeuey2567 3 жыл бұрын

trying to cram random info for my chem test and uhhhh i think I'm about to fail this like what is this man sayingggg

@siesie7074 3 жыл бұрын

same haha i missed like three days of school and in covid times that's like nine days of lessons so praying I don't flunk my bonding test soon.

@ropey1663 Жыл бұрын

How did you guys do?

@Supernyv 5 жыл бұрын

Nicely and smartly summarized, thank you so much!

@annelr.9466 4 жыл бұрын

Thank you for the video. This was truly helpful for the course that I am currently taking. My teacher explained it one way but it is always good to learn from other perspectives. Much appreciated.

@RedSoxfan95 7 жыл бұрын

thank you so much for explaining the concept, better than my textbook

@call.me_dadx4516 Жыл бұрын

POV: you missed one lesson and now you’re a term behind

@yeongkx2005 5 жыл бұрын

You're so much better than my school lecturers!! Subscribed :))

@orfeassiozos1575 4 жыл бұрын

Thank you so much professor Dave! Understood everything much better after your video!

@kripashankarshukla4073 6 жыл бұрын

Merry Christmas sir! I hope you are celebrating Christmas well!

@kripashankarshukla4073 7 жыл бұрын

Your videos made me a chemistry genius. Thanks you so much and I can't express how helpful your videos are for me

@siesie7074 3 жыл бұрын

This was so much more helpful than my chem teacher explaining it. Am in grade eleven doing so many lessons a day with covid so this really helped!

@felixsahlen1836 Жыл бұрын

Just really good and informative. I'm impressed!

@rittenbrake1613 6 жыл бұрын

This guy can explain things crazily clear , appreciate very much

@eduardogaldino3670 5 жыл бұрын

You know a lot, and superb explanations,thank you Mr Dave!

@kattirivinius5625 5 жыл бұрын

You have been so helpful! I have a college Chemistry exam today and I am struggling with this particular aspect. It is much more clear now. Thank you

@jlyn7468 4 жыл бұрын

This is our 9th grade chemistry lesson : P

@ewyes5935 2 жыл бұрын

@@jlyn7468 believe it or not but people study the same thing in college but more in depth

@dominicestebanrice7460 2 жыл бұрын

You make EVERY SENTENCE COUNT and the prep. work that takes is much appreciated. It reminds me of a quip by that great orator Winston Churchill; he apologized to the members of House of Commons for making them sit through a long speech because he "didn't have time to write a short one".

@muhdsyahir9416 5 жыл бұрын

Helps a lot. Thanks for the video. And also thanks for the knowledge.

@yeeyeehaaw 6 жыл бұрын

Totally acing my chemistry mid-term test a few weeks ago, thanks to your videos sir! Now on my way to my final term test and watching your videos to strengthen my comprehension. Wish me luck :)

@ProfessorDaveExplains 6 жыл бұрын

you can do it!

@thatoneveryfunnychannel2482 Жыл бұрын

how did u do

@madnad4284 6 жыл бұрын

Thank you so much, you helped me a lot! :)

@DavidGonzalez-le9lx 8 жыл бұрын

Great video and channel! Good luck in your future.

@ComandaKronikk 7 жыл бұрын

wow man so helpful! this is exactly what i was unsure about, i am now a bit more confident the big chem test on monday will go smoothly!

@ismailnurudeen 3 жыл бұрын

My Professor recommended this video in his material on Thermochemistry. You should know what that means 👏🏾

@suzettebalboa4701 7 жыл бұрын

Mabuhay from Philippines. Thank you so much..

@abdulazizmemesh2791 5 жыл бұрын

Keep on going, I like your videos and I like your selection of words. Every time I see your videos, I learn the content on top of new vocab words

@atheermmadlool2862 5 жыл бұрын

I do appresiate your method in illustrating information. I am really grateful for you prof. Dave

@patientno1797 7 жыл бұрын

i'm here for his intro tbh

@subomiyusuf7894 4 жыл бұрын

i disliked just so you can see the like count

@samost7352 5 жыл бұрын

My God, I love your videos, thank you for explaining so well, what my professor can't.

@alias40anon 5 жыл бұрын

Very good video, short with enmphasis on the essential theoretical points and explanatory with nice and simple example

@PostMortemix 4 ай бұрын

Thank you for this wonderful video!

@mariasantamaria2364 7 жыл бұрын

YOU ARE A CHEMISTRY JESUS

@Syiepherze 6 жыл бұрын

Maria Santa Maria holy crap you're right

@ss-gc1ri 5 жыл бұрын

HAHAHAHAHAHAHAHA

@aniawo5119 5 жыл бұрын

😂 yep. Mine too

@sophieandreaz984 3 жыл бұрын

becareful with what you say!

@reko6262 8 жыл бұрын

very rich information thanks alot

@mehdisaffar 6 жыл бұрын

Very clear and helpful explanation. Thank you very much

@pjs1164 5 жыл бұрын

Great video man this helped me so much for preparing for my quiz tomorrow thank u👍👍

@iBOSSHOG 7 жыл бұрын

Bro, I started dying when you said that Van der Waals was the consolation prize of the inter-molecular forces. Also, thank you for the vids, saving my grades.

@haileymoehlmann9198 4 жыл бұрын

you just saved my engineering chem grade. God bless.

@anchalkumari9573 3 жыл бұрын

Thank you for making such video it's really explained the topic clearly

@Nazra_Chemist Жыл бұрын

Being a university teacher and researcher, these basic concepts helps me alot ..... Thanks Dave

@souravmahanty7025 4 жыл бұрын

That moment when the AP Chem quiz is tomorrow but you haven't done a single page of homework, so you find yourself here at 2 AM struggling to find the will to survive.

@hnng1439 4 жыл бұрын

Stem ka sis?

@bhaskarp20 3 жыл бұрын

POV: you’re in chem class

@KairuVTCh 2 жыл бұрын

TYSMMMM ive been reviewing for my NMAT and this really helped me alot!

@sophiafang2845 4 жыл бұрын

Your video is so helpful. Thank you.

@ninaaq5688 3 жыл бұрын

Watching this before my a level test tomorrow 😭😭😭

@kripashankarshukla4073 6 жыл бұрын

You deserve more than 1 million subscribers

@ProfessorDaveExplains 6 жыл бұрын

tell all your friends and help me get there!!

@kripashankarshukla4073 6 жыл бұрын

Sir I have told all my friends about your channel and they have also subscribed you

@reandranisbet1361 7 жыл бұрын

I went an enter term not understanding this work,but in 10 minutes I finally understand it!THANK you!

@caroljackson767 4 жыл бұрын

Thank you Professor Dave! Amazing!

@rademaxwell3436 5 жыл бұрын

Whenever me and my friends are struggling with chem in class we are like Jesus will help us at home Thanks

@Sangamdeepsingh23 5 жыл бұрын

Sir thsnks for teaching this topic i wad finding a great video which i think i have found 🙃🙃😌😌

@Guidus125 4 жыл бұрын

Fantastic video. You deserve so much more views

@ashleyann7205 7 жыл бұрын

your videos are really good and helpful! :)

@privateconfessions7821 7 жыл бұрын

I love how you comment on other peoples videos, I found your channel that way. I think it was a comment on a Khan Academy video

@ProfessorDaveExplains 7 жыл бұрын

i just can't keep my opinions to myself!

@privateconfessions7821 7 жыл бұрын

Great way to allow students to find your channel

@privateconfessions7821 7 жыл бұрын

My textbook say electrical conductivity is ability to conduct electric current due to free electrons with changing composition of the substance. Is this correct the with changing substance part, I hope it's not spelling mistake and actually without 😰

@ProfessorDaveExplains 7 жыл бұрын

oh, no i would say it's without, metals conduct electricity because electrons are able to flow freely through the network of covalent bonds, so the substance doesn't change its composition, unless one counts the flow of electrons as changing composition. i would think that its without!

@privateconfessions7821 7 жыл бұрын

I knew it thanks bro, dedicated fan now 💪💪💪

@stephenjmatthews 8 жыл бұрын

Professor Dave, I have been loving your videos; thank you. I am a physics teacher and have picked up IB High Level Chemistry so I am having to brush up on a lot of concepts. I have a question about van der Vaals forces. Your video classifies only the London Dispersion forces as van der Waals forces, however, according to my textbook and goldbook.iupac.org/V06597.html, van der Waals also includes permanent dipole-dipole and dipole induced dipole interactions. Is this a common discrepancy of classification?

@ProfessorDaveExplains 8 жыл бұрын

it's true, i have seen van der waals mentioned as including dipole-dipole interactions of all varieties, whether momentary/induced or permanent, this is not what i was initially taught, but to be safest it may be easy to refer to them as dipole-dipole interactions when the dipole is permanent and dispersion forces when temporary, just to be most specific. sorry for the confusion!

@stephenjmatthews 8 жыл бұрын

Thanks, keep up the great videos