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!
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.
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.
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 RUclips, I make sure to specify your channel! Thanks once again! A.H.A
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!
@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)
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!
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
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
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....
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.
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!
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.
I'm about to finish my first course in engineering and I have a chemistry final next week and a quiz tomorrow and guess who always saves me? ITS YOU !!! Thank you for helping me in this course 👍🏻👍🏻👍🏻
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".
English isn't my first language so sometimes it's hard for me to understand it but you explain so well though I still have to turn on the cc to understand some terms but your voice is clear and you saved me from failing chemistry last semester
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 :)
I wish I could find this channel earlier. I am a pharmacy student now I am revising the chemistry, biochemistry, Physiology and pharmacology. The university is closed due to Covid and the military coup. So your channel save my extra time
Chemistry class is confusing me, thanks for this. An actual visual for something and not just some terms thrown around like I'm supposed to get it. And also short and concise in a way that actually makes simple sense, not convoluted.
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!
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!
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!
My guy you are going to save me from my professor. You explained something in 10 minutes that they, doing a worksheet for 3 classes straight, couldn't. I'm coming back for the rest of the semester. :)
Inter molecular forces........what a wired lesson BEFORE I WATCH THIS VIDEO !!! now it's one of my favorite lesson.THANK YOU VERY MUCH PROFESSOR DAVE !!!
i've been trying to watch my lectures online but my gosh they are boring, you explained that beautifully and made me want to pay more attention. science should be fun and exciting
Wow I knew absolutely nothing after reading my book & after 10:15mins into the video I got all my answers correct 😁 this was a boost of confidence that I really needed while taking chem 2!
شكرا لك كثيرا على الشرح الاكثر من رائع (^_^) ، وشكرا ايضا لانك اضفت اللغة العربية لترجمة هذا الفيديو التي ساعدني بالفهم جيدا وهذا بسبب ان اللغة العربية هي لغتي الام ، 😊 استمر...
Thanks for another brilliant clearly explained video which taught me a lot. At 6.00 min you say everything is solid at absolute zero. Helium is (predicted) to be liquid at absolute zero (at atmospheric pressure) because of quantum zero point motion. It requires about 25 atmospheres of pressure to force the liquid into the solid phase at absolute zero. For the same reason, monoatomic hydrogen is a gas down to absolute zero.
Literally in masters and I have Soft matter physics as my interdisciplinary research subject in a biology based curriculum. I really needed thede to solidify my basics again.
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 😰
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!
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.
Thanks for an amazing video. Just a small suggestion, "heat energy" is not a property. It should be called "thermal energy" instead. Heat is just a transit phenomena which occur at system boundary due to temperature difference.
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.
Boy, your videos are always so clear! And the examples you use and the way you build from one example to the next adds to the comprehension. You should really investigate or offer your services to people that produce text books. Their work is lousy compared to your illustrations! thx!!!
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!
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.
No matter.All is well.I was just confused.Thankyou for recognizing ur mistake.
As(to err is man).
u are my role model
Also can I ask does ion-ion isnt intramolecular interaction? I mean ionic bond and ion-ion isnt the same thing?
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.
Thank you chemistry jesus.
I can't begin to describe how accurate this is.
ArkTheGreat You mean Cesare Borgia.
your comment made me cry
Amen
test in 5 minutes wish me luck
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 RUclips, I make sure to specify your channel! Thanks once again!
A.H.A
Mee tooo
@@joshpatra Thanks Josh, will do! I already do that for a few topics so...
@@Metal_Master_YT Oh lmao that's nice... I'm in twelfth right now, this was some time ago :)
@@Metal_Master_YT Thank you. Same to you, and all the best :)
its been 3 years how are you doing now
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!
woohoo! happy to help!
i feel ya (eureka moments) 😂😁
EuSciEu How did you revise for your A Levels?
@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)
yeaa, ridiculously good.
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!
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
Professor Dave, I do believe you just saved all of my AP Chemistry students.
+Brandon Fontenot happy to be of service! if you could ask them all to subscribe that's all the thanks i need!
+Brandon Fontenot if thats the case brandon then you need to quit your fucking job
lmao
amen .
@@ethanjordan6914 I like how this reply has the exact same number of likes as the original comment
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
Reading your comment a year later. You're absoloutely right
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....
POV: You have an exam today
(sigh)...
You are correct
POV: you still dont understand
remove the camera in my home
Sadly tomorrow I am going to kill my self
@@Sam-dr6nj done it yet?
Chapters:
0:34 Ion-Ion
0:48 Ion-dipole
1:56 Dipole Dipole
3:06 Van der Waals / Londen Dispersion (LDF)
Thank you very much
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.
rock on!
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!
I honestly respect you for making the videos while you may or may not also be teaching classes-
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.
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
How'd it go?
chemistry is FON! way to remember hydrogen bonds
it does. example : chloral hydrate is one of the only vicinal diols that exist. that is due to chellation only
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
Lindsay G. Please don't.
ohh yeaa
Or F NO.
My Professor recommended this video in his material on Thermochemistry.
You should know what that means 👏🏾
I'm about to finish my first course in engineering and I have a chemistry final next week and a quiz tomorrow and guess who always saves me? ITS YOU !!! Thank you for helping me in this course 👍🏻👍🏻👍🏻
woohoo! happy to help!
This is the most articulate professor I have ever experienced. Great
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".
i didn't know russel brand new chemistry
JEEESSUUUUS
I'm a middle school science teacher and your content is incredible
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!
Being a university teacher and researcher, these basic concepts helps me alot ..... Thanks Dave
Chem test tmw... thank you chemistry jesus. You have once again explained this better than my teacher
English isn't my first language so sometimes it's hard for me to understand it but you explain so well though I still have to turn on the cc to understand some terms but your voice is clear and you saved me from failing chemistry last semester
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 :)
you can do it!
how did u do
Thank you Prof. Dave. I am learning Chemistry for the first time.
My text book makes these simple concepts so complicated. Thank you for the simplification! New Subscription!
I wish I could find this channel earlier. I am a pharmacy student now I am revising the chemistry, biochemistry, Physiology and pharmacology. The university is closed due to Covid and the military coup. So your channel save my extra time
Your intro is the meaning of life😆
what a lovely compliment :)
This guy can explain things crazily clear , appreciate very much
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
This is our 9th grade chemistry lesson : P
@@jlyn7468 believe it or not but people study the same thing in college but more in depth
Chemistry class is confusing me, thanks for this. An actual visual for something and not just some terms thrown around like I'm supposed to get it. And also short and concise in a way that actually makes simple sense, not convoluted.
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!
gotta take care of those subscribers!
I think you are the best chemestry teacher on this earth!
0:04 best intro ever.
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!
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
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.
How did you guys do?
I went an enter term not understanding this work,but in 10 minutes I finally understand it!THANK you!
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!
My guy you are going to save me from my professor. You explained something in 10 minutes that they, doing a worksheet for 3 classes straight, couldn't. I'm coming back for the rest of the semester. :)
thank you so much for explaining the concept, better than my textbook
Inter molecular forces........what a wired lesson BEFORE I WATCH THIS VIDEO !!! now it's one of my favorite lesson.THANK YOU VERY MUCH PROFESSOR DAVE !!!
you just saved my engineering chem grade. God bless.
i've been trying to watch my lectures online but my gosh they are boring, you explained that beautifully and made me want to pay more attention. science should be fun and exciting
Your videos made me a chemistry genius. Thanks you so much and I can't express how helpful your videos are for me
Wow I knew absolutely nothing after reading my book & after 10:15mins into the video I got all my answers correct 😁 this was a boost of confidence that I really needed while taking chem 2!
Mabuhay from Philippines. Thank you so much..
I almost failed AP chemistry, but I watched your videos and my GPA is above 3.2. Thank you so much
You deserve more than 1 million subscribers
tell all your friends and help me get there!!
Sir I have told all my friends about your channel and they have also subscribed you
شكرا لك كثيرا على الشرح الاكثر من رائع (^_^) ، وشكرا ايضا لانك اضفت اللغة العربية لترجمة هذا الفيديو التي ساعدني بالفهم جيدا وهذا بسبب ان اللغة العربية هي لغتي الام ، 😊 استمر...
i'm here for his intro tbh
i disliked just so you can see the like count
Thanks for another brilliant clearly explained video which taught me a lot. At 6.00 min you say everything is solid at absolute zero. Helium is (predicted) to be liquid at absolute zero (at atmospheric pressure) because of quantum zero point motion. It requires about 25 atmospheres of pressure to force the liquid into the solid phase at absolute zero. For the same reason, monoatomic hydrogen is a gas down to absolute zero.
These videos are great. Thank you so much chem 112 is kicking my butt especially molecular orbital Diagrams
Just watched this right before an exam. I finally get it now
Really cool to see someone help others like this on their own👍
You just made me understood these concepts better than my in-person class. Thank you for uploading this!
i appreciate these videos so much! You're helping me survive CE Chem!! thank you a thousand times!
you are literally teaching god, i don't think there is a teacher greater than you
As always great work Dave, thank you so much
BEST TEACHER EVER!!!!!! YOU SIR ARE A LIFE SAVER!!
You're so much better than my school lecturers!! Subscribed :))
I just want to say, thanks to you I have a chance to pass the chemistry exam.
Thanks man.
Watching this before my a level test tomorrow 😭😭😭
Literally in masters and I have Soft matter physics as my interdisciplinary research subject in a biology based curriculum. I really needed thede to solidify my basics again.
Whenever me and my friends are struggling with chem in class we are like Jesus will help us at home
Thanks
The best video ever made on this concept in youtube
YOU ARE A CHEMISTRY JESUS
Maria Santa Maria holy crap you're right
HAHAHAHAHAHAHAHA
😂 yep. Mine too
becareful with what you say!
Man I gotta tell you. This dude is super helpful.
My God, I love your videos, thank you for explaining so well, what my professor can't.
You are better than my teacher who used 4 to 5 lesson to explain these things
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
i just can't keep my opinions to myself!
Great way to allow students to find your channel
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 😰
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!
I knew it thanks bro, dedicated fan now 💪💪💪
Professor Dave I'm so glad that you have such a clear accent. I really didn't wanted to use captions.
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.
Istg this man deserves more! 😭 Probably the best teacher throughout the youtube
love you !!
I loved the last part (comprehension) green and black colour just won my heart
Thanks for an amazing video.
Just a small suggestion, "heat energy" is not a property. It should be called "thermal energy" instead. Heat is just a transit phenomena which occur at system boundary due to temperature difference.
POV: You watched this many times but you still don't understand it
😂😂
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
lmaoo this shit pisses me off watching this guy
My lecturer linked this video to our course outline 😅.
Bless your heart for saving my life in chemistry! Thank you!
I have an A level Chemistry exam in 2 days. This is really helpful :))
TBH I didn't understand a thing you said. I think I'm failing my Chemistry Test. 💀💀
I love the way he says 'precisely'
SO hard for me to understand intermolecular forces. This helped a lot!!
might just ace my test tomorrow. thanks all the way from south Africa
You know a lot, and superb explanations,thank you Mr Dave!
dear chemistry jesus, you just made things much much much clearer. may your father bless you.
Thank you so much, you helped me a lot! :)
Best explaination sir
Very clearly highlights the concepts
Thank you very much
better than my textbook
Ur simplicity of explaining is great...
POV: you’re in chem class
Thank God I found you my chemistry professor sucks at explaining this.
very rich information thanks alot
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!
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.
Stem ka sis?
Sir after seeing your videos, now I am fond of chemistry and thanks a lot
Sir thsnks for teaching this topic i wad finding a great video which i think i have found 🙃🙃😌😌
Boy, your videos are always so clear! And the examples you use and the way you build from one example to
the next adds to the comprehension. You should really investigate or offer your services to people that produce
text books. Their work is lousy compared to your illustrations! thx!!!