I personally think Professor Dave videos are better than Crash Course. Crash Course is distracting and fast, while Professor Dave explains and reviews. Thanks Dave!
Professor Dave should have my professor's salary. My prof would not teach this to us and would say we should have known this already because it was taught in high school even though it was not.
@@abdirizaqmohamed344 They probably learn things that you don't learn in highschool tho. I am learning this in highschool as well but there's really no point in bringing that up.
I'm finding this video suuuuper helpful for my chem midterm tomorrow. It's also posted on my birthday four years ago heheheheh :D That must mean good luck. Thx Professor Dave!!!
i have scoured my lecture notes, textbook, ACS guide, and watched probably 30 videos on molecular/electronic geometry. all were missing something important and this video ties it all together. particularly the electron density explaining the spd hybridization. PROFESSOR DAVE YOU ROCK!!!
Professor Dave you are literally the best chemistry teacher! I had this topic in many hours either in school or now in university and i watch this and it makes just sense! UNBELIVABLE!
your videos are literally the best source of information, and best explanation of chem concepts that I have found. They are detailed, yet not overwhelming, and the comprehension checks at the end are Au!
Just when i thought all hope was lost, in an attempt at a last minute cram session at 3:56 in the morning before finals chem jesus blessed my mind with weeks of knowledge in a 6 minute video. Praise be!!!
I've always learned and have been taught the the lone pair repel more than shared pairs which accounts for the difference in the molecular geometry from the electron geometry. Not because the lone pairs take up less space. But a good job explaining electron geometry.
i have a really important 70 marks chem exam tomorrow and this 6 min video helped me understand this better than 6 hours of actual chem class. Thank you so much, Mr.Dave. Please wish me luck.
Hi Prof. Dave! Your explanations are lucid, thorough, and your voice is gentle yet confident- making the whole combo extremely useful and pleasant. I can go watching/learning from your videos for hours. I am going to support you on Patreon. Also, would you please make some videos on music theory? I am sure like me many, many people would love to watch and learn music from you.
sp Hybridized = linear| no of electron domains-2 sp2 Hybridized = trigonal planar(120)|no of electron domains-3 sp3 Hybridized = tetrahedral(109.5)|no of electron domains-4 sp3d Hybridized = trigonal bipyramidal(90 and 120)|no of electron domains-5 sp3d2 Hybridized = octahedral(90)|no of electron domains-6
I watched this video an hour before my chemistry final, and there was a question on the exact example you showed about carbon and its different hybridizations. THANK YOU!!!!!
Oh my goodness, this lesson helped me so much! I was really struggling with this topic in my chem class, but now it makes a whole lot more sense! Thanks Professor Dave!
Hi Dave at 3:48 you have said the lone pair does not take up as much space as a bonding pair. From my reading and own reasoning I would have thought the lone pair would sit closer to the nucleus of the central atom and, consequently exert a greater repulsive force on the other electrons pairs compared to a bonding pair. Therefore, bond angles in a trigonal pyramidal substance would be tighter (107 o) then in tetrahedral (109.5o). What are your thoughts on this?
Yes what you're stating about bond angles is absolutely correct, I was more closely implying that the lone pair takes up "less space" than the bonding pair of electrons plus the atom on the other side of the bond, as sort of a way of describing these ball and stick models where we remove atoms to get the different molecular geometries within an electron-domain geometry. Don't worry, the way you are thinking about it is accurate!
I swear this hybridisation topic has been going on in my class since 2-3 weeks, I learnt everything in this 6 minutes video that they were teaching since weeks.
This is a great video but I noticed a BIG MISTAKE at 3:45 - Professor Dave says that the lone pair will take up LESS space than a bond to another atom, when he should say it takes up MORE space. The bond angle in NH3 ammonia is 107º, whereas the bond angle in CH4 methane is 109.5º. The bond angle in NH4+ (ammonium) likewise is 109.5º. So clearly, the lone pair in NH3 is taking up MORE space than a bonded atom, NOT LESS, which is why the bond angle is smaller in NH3 than in CH4 and NH4+.
aaaa tysm professor david ! I didnt knew the "count the number of domain electrons" trick for hybridization and it helped sooo much !! Thank youu! Stay healthy n safe!
Whoa! TYSM! LOVE it! With your 6:30 mins explanations, I finally understand the 3 one hour of miserable chem lectures! :) I don't know chem without you, Prof. Dave! ^_^
i simply don't get why many teachers make learning things complicated.it takes them many classes to explain this.am happy to know that iv found a way out of reading huge books............thanks dave.#just found this before exam
Thanks for this excellent video. There is a slight error at 3:46. The lone pair on N in NH₃ takes up *more* space than a bonded pair, not less. This is why the bond angles in NH₃ are 107° rather than the ideal 109.45°.
Yo I legit watched this video the day before my big test in chem. I got the highest score in the class literally just because of this and many other videos of his.
My teacher take 6 days to explain me but then also I'd didn't understand. But when I watch your 6 min lecture I've become topper of my school,thanks professor Dave and please keep creating those videos. And also please create a video about Tension force
I'm teaching this to my high school honors chem class right now, and I was looking for the best video that would illustrate this concept in a really concise manner (since we've gone over orbitals and electron configs already). I think this video will be helpful!
hmm, well tetrahedral implies four electron domains around a center, while pyramidal implies three, so i think bipryamidal makes more sense, but i suppose names are a little bit arbitrary
@@ProfessorDaveExplains I guess I got confused because I was looking at the outward planes of the structure, and I saw a triangular base rather than a square one, and therefore I thought "tetrahedral". My mistake. Thank you for your reply, Professor Dave.
3:45 Isn't it precisely the opposite, that lone pairs take up more space than the covalent bonds of a molecule which is why H2O for example has a bond angle of less than your normal 109.5°?
Dave neglects mentioning that the bonds themselves have different entropical (endothermic or exothermic) properties that allow a rxn to break or be set off by the laws of thermodynamics which of themselves have their respective laws and equations (their bond strength as learned about from the periodic table, and the heat of physics transferred in the empty space between bonds and elements that is heat itself, particularly important with enzyme catalyzed reactions and the biological function of microorganisms who rely on H2O’s relative coolness to maintain their lifespan) but this video helps connect these advanced level concepts with the basic concept of geometrical rxn initiation! Great video, 💯/10 would watch again
All you're videos are very good, but imo opinion this one is incredible. It seems to pack in a ton of information and the learning tools illustrate the material so well.
I need to solve this mystery: Why do I understand you but not my teacher T_T ?? If I pass this class it'll be because of you :( Please make more videos plsssssss!!
Yes we have a group where I told everyone. They were relieved to find it! I was thinking about telling the teacher but she might get offensive that why don't I understand her :P idk I'll try tho. Seriously, you explain really really well. Thank you for existing (bows)
Ok not even lying, i saw a meme about him being a chemistry Jesus and I came here because I got a chem 30 test tomorrow thinking what do I have to lose. Little did I know that he has FIVE VIDEOS OF WHAT WE ARE LEARNING THANK YOU CHEMISTRY JESUS
Your 6 minute video taught me more than 6 hours of lecture.
Same here. Amazing video !!
the same here also
Same here also...
maybe because you are not paying attention
Pay attention in class
I personally think Professor Dave videos are better than Crash Course.
Crash Course is distracting and fast, while Professor Dave explains and reviews.
Thanks Dave!
in my opion they are both good and different Dave is better at giving details while crash course is better at giving summerys.
@@erikburzinski8248 i agree
I think crash course is good if you have time to waste. Or if your way of learning is by story
I would say crash course is more for entertainment, not for revision.
its called crash course for a reason you know, most people use it for review or to get an idea of what they'll be doing.
Professor Dave should have my professor's salary. My prof would not teach this to us and would say we should have known this already because it was taught in high school even though it was not.
Miss Milka I’m pretty sure Professor Dave makes more. If he doesn’t, I declare bullshit on every college.
the education system in the uk is much different we learn this in high school
@@abdirizaqmohamed344 They probably learn things that you don't learn in highschool tho. I am learning this in highschool as well but there's really no point in bringing that up.
@@kaos7012 True...
out of topic, but is that lia
it’s time for finals again so you know what that means! binge watching professor dave’s videos!
I might pass my chemistry final tomorrow thanks to u Dave. Thanks u!!!!
Definitely not passing English though.
@@BB-gr7ug oh my god im rolling☠😭
I know this four years ago but did you pass
@@rudbergalitzine lol yes i did !
@@kristynpaige4151 lets geddit congrats!
Exam tomorrow🗣🗣
OMFG I GET THIS THE NIGHT BEFORE FINALS!! THANK YOU!!!!!!
1 year later here I am doing the same lol
same lol
Same lmao
Same haha
sane bhuga
I'm finding this video suuuuper helpful for my chem midterm tomorrow. It's also posted on my birthday four years ago heheheheh :D That must mean good luck. Thx Professor Dave!!!
Is that a frrranky reference
I never understood this topic in the class but now my concepts are getting crystal clear.
Thank you very much Professor Dave.
You are honestly one of the best teachers for chemistry I have ever come across. Thanks so much!
i have scoured my lecture notes, textbook, ACS guide, and watched probably 30 videos on molecular/electronic geometry. all were missing something important and this video ties it all together. particularly the electron density explaining the spd hybridization. PROFESSOR DAVE YOU ROCK!!!
Sorry to break it you but nah then u r just dumb
Professor Dave you are literally the best chemistry teacher! I had this topic in many hours either in school or now in university and i watch this and it makes just sense! UNBELIVABLE!
your videos are literally the best source of information, and best explanation of chem concepts that I have found. They are detailed, yet not overwhelming, and the comprehension checks at the end are Au!
Thank you. Your explanations click in my head and I get it!
Just when i thought all hope was lost, in an attempt at a last minute cram session at 3:56 in the morning before finals chem jesus blessed my mind with weeks of knowledge in a 6 minute video. Praise be!!!
chem jesus lmao
HAHAHAHAHHAHAHAHAHAHA
@@peterroberts7832 The only god I praise😉.
I am a long term sub that got handed a chemistry class, you are totally teaching me so I can teach them. I love you videos!
I've always learned and have been taught the the lone pair repel more than shared pairs which accounts for the difference in the molecular geometry from the electron geometry. Not because the lone pairs take up less space.
But a good job explaining electron geometry.
My book of university chemistry says lone pair takes most of the space of central atom thus repulsion between lone pair is more
I've been in hours of lectures and been studying this all day today, and this is the only video that made me finally understand it.
thank you professor Dave, this was really helpful for a student trying to get in a medical school via NEET (med entrance exam in india)
heyy are his videos helpful and enough for neet chemistry?
@@zake9793no
My teacher doesnt even teach us, makes us teach ourselves it out of an outdated text book. You taught me more than he has in a whole unit. THANKS!!!
This is amazing! I understood the lesson better by watching Professor Dave's videos rather than reading our learning module. Thanks, Professor!
i have a really important 70 marks chem exam tomorrow and this 6 min video helped me understand this better than 6 hours of actual chem class. Thank you so much, Mr.Dave. Please wish me luck.
Hi Prof. Dave! Your explanations are lucid, thorough, and your voice is gentle yet confident- making the whole combo extremely useful and pleasant. I can go watching/learning from your videos for hours.
I am going to support you on Patreon.
Also, would you please make some videos on music theory? I am sure like me many, many people would love to watch and learn music from you.
Thanks in advance for the support! Yes absolutely, music theory is on the list!
sp Hybridized = linear| no of electron domains-2
sp2 Hybridized = trigonal planar(120)|no of electron domains-3
sp3 Hybridized = tetrahedral(109.5)|no of electron domains-4
sp3d Hybridized = trigonal bipyramidal(90 and 120)|no of electron domains-5
sp3d2 Hybridized = octahedral(90)|no of electron domains-6
I sincerely wish I would've found you earlier this year....
I watched this video an hour before my chemistry final, and there was a question on the exact example you showed about carbon and its different hybridizations. THANK YOU!!!!!
Oh my goodness, this lesson helped me so much! I was really struggling with this topic in my chem class, but now it makes a whole lot more sense! Thanks Professor Dave!
Hi Dave at 3:48 you have said the lone pair does not take up as much space as a bonding pair. From my reading and own reasoning I would have thought the lone pair would sit closer to the nucleus of the central atom and, consequently exert a greater repulsive force on the other electrons pairs compared to a bonding pair. Therefore, bond angles in a trigonal pyramidal substance would be tighter (107 o) then in tetrahedral (109.5o). What are your thoughts on this?
Yes what you're stating about bond angles is absolutely correct, I was more closely implying that the lone pair takes up "less space" than the bonding pair of electrons plus the atom on the other side of the bond, as sort of a way of describing these ball and stick models where we remove atoms to get the different molecular geometries within an electron-domain geometry. Don't worry, the way you are thinking about it is accurate!
I swear this hybridisation topic has been going on in my class since 2-3 weeks, I learnt everything in this 6 minutes video that they were teaching since weeks.
This is a great video but I noticed a BIG MISTAKE at 3:45 - Professor Dave says that the lone pair will take up LESS space than a bond to another atom, when he should say it takes up MORE space. The bond angle in NH3 ammonia is 107º, whereas the bond angle in CH4 methane is 109.5º.
The bond angle in NH4+ (ammonium) likewise is 109.5º.
So clearly, the lone pair in NH3 is taking up MORE space than a bonded atom, NOT LESS, which is why the bond angle is smaller in NH3 than in CH4 and NH4+.
no, it takes up less space, which is why it's closer to the nucleus, which is what produces the enhanced repulsive effect
@@ProfessorDaveExplainshello
We need a teacher like you!
aaaa tysm professor david ! I didnt knew the "count the number of domain electrons" trick for hybridization and it helped sooo much !! Thank youu! Stay healthy n safe!
Whoa! TYSM! LOVE it! With your 6:30 mins explanations, I finally understand the 3 one hour of miserable chem lectures! :) I don't know chem without you, Prof. Dave! ^_^
Your 6 minutes video made me grasp and understand the lecture of 5 hours
Anyone watching it on 2024
I got a test tomorrow
Yessir
Yeah for class lmao
Hall yeah
Yep got the test in 20 minutes
12:23 AM I just finished watching this video and it has helped me tremendously, THANK YOU SO MUCH!
And here comes the next wave of Chemistry students before finals! Thank you so much!
lyrics for whoever wants to sing along with the intro :
"He knows a lot about the science stuff,
professor Dave Explains!!"
🎵🎶✨
I wish that I found ur videos before tomorrow is my exam but I still appreciated cause i found them 😍😍😍😍😍❤️
i simply don't get why many teachers make learning things complicated.it takes them many classes to explain this.am happy to know that iv found a way out of reading huge books............thanks dave.#just found this before exam
THANK YOUUUUU! I wish you were my Chem teacher!
This guys the only person I know who can actually teach me things
I think that you just summarized a month worth of classes in just six minutes. Thanks so much!
Always good to know you're there, Dave 🎉
OMG FINALLY SOMETHING THAT HELPS. THANK YOU.
Professor Dave helped me with Italian, and now he’s saving me in Chem much respect
well done
Excellent method of teaching
You're awesome! I'm METU student and I have difficulty in understanding this topic, now that's all clarified thanks to you
I'm constantly sharing your channel with everyone. Thank you so so so much!!
Thanks for this excellent video. There is a slight error at 3:46. The lone pair on N in NH₃ takes up *more* space than a bonded pair, not less. This is why the bond angles in NH₃ are 107° rather than the ideal 109.45°.
Yeah, on my AP chem textbook it stated that lone pairs require more room than bonding pairs
and tend to compress the angles between the bonding pairs.
one minute in I'm just like so grateful this is great, do you have an orbital video?
I found it thanks!
Now I know I am going to ace my grade 12 chem exam tomorrow!
omg, i finally got it! when my teacher was going through this, i was so confused about what’s going on, thank you for this video!
That electron domain trick really simplified molecular geometry for me! Thank you so much!!
amazing explanation professor 🌷
You don't even know... My teacher taught this to us in a day and is expecting us to know this by the next class!! Super helped a TON!!!
time to leave school and join professor dave membership
I love you man xD , Its badly explained/organized in the book, and I used to sleep in all the lectures, now I finally understand it.
Yo I legit watched this video the day before my big test in chem. I got the highest score in the class literally just because of this and many other videos of his.
Thank you for this video. I have been spending hours reading my textbook and looking at other videos and this one finally helped me get this.
just like everyone else below, my professor didn't quite explain it right, but you connected the dots on my mind. Thanks professor dave!
EVERYTHING IN THE COURSE MATERIAL PROVIDED BY OUR PROF MAKES NO SENSE. YOUR VIDEO IS A LIFESAVER. THANKS FOR THIS
My teacher take 6 days to explain me but then also I'd didn't understand. But when I watch your 6 min lecture I've become topper of my school,thanks professor Dave and please keep creating those videos. And also please create a video about Tension force
I really don't know what I would do without you
Professor Dave you da real MVP
sir u have explained the big concept that too in a very short period of time. It is really amazing.
it's so inspiring made me realize how electrons gives space for one another.
My Chem Professor makes everything complicated. You make it so much simpler
This actually makes sense, thank you!!
I'm teaching this to my high school honors chem class right now, and I was looking for the best video that would illustrate this concept in a really concise manner (since we've gone over orbitals and electron configs already). I think this video will be helpful!
Professor Dave u really resemble the BOLLYWOOD actor RANBIR Kapoor🙂
Yes he look like him i also commented same thing😂
finals are next week and I just now understand this thanks to you
You're my hero! Thank you for your tutorials prof, they helped me so much
it's my great pleasure! good luck with your studies!
Shouldn't the trigonal bipyramidal shape that is shown at 3:04 be described instead as trigonal bitetrahedral? I'm confused by this.
hmm, well tetrahedral implies four electron domains around a center, while pyramidal implies three, so i think bipryamidal makes more sense, but i suppose names are a little bit arbitrary
@@ProfessorDaveExplains I guess I got confused because I was looking at the outward planes of the structure, and I saw a triangular base rather than a square one, and therefore I thought "tetrahedral". My mistake. Thank you for your reply, Professor Dave.
Thank you so much professor! that helps a lot !
i tried to study it for 1 year almost never understood , but know i solved all these questions thanks!!!
thank you so so so much. my chem professor didn't make any sense, but you make it all click!
3:45 Isn't it precisely the opposite, that lone pairs take up more space than the covalent bonds of a molecule which is why H2O for example has a bond angle of less than your normal 109.5°?
they produce more repulsion because they're closer to the central atom
Thank you!! I finally understand this.
Dave neglects mentioning that the bonds themselves have different entropical (endothermic or exothermic) properties that allow a rxn to break or be set off by the laws of thermodynamics which of themselves have their respective laws and equations (their bond strength as learned about from the periodic table, and the heat of physics transferred in the empty space between bonds and elements that is heat itself, particularly important with enzyme catalyzed reactions and the biological function of microorganisms who rely on H2O’s relative coolness to maintain their lifespan) but this video helps connect these advanced level concepts with the basic concept of geometrical rxn initiation! Great video, 💯/10 would watch again
Yikes, most of that was gibberish, please watch the rest of this chemistry series for a review of thermodynamics and related concepts.
@@dororo2597 Yes you must look at the central atom.
my life makes sense now ... i can live again!
Thank you!
+steve alapatt i've never saved a life before! this will go on a list of quotes on my press page if such a thing ever exists.
@@ProfessorDaveExplains you saved my life also
All you're videos are very good, but imo opinion this one is incredible. It seems to pack in a ton of information and the learning tools illustrate the material so well.
thank you!!! now i’m getting a 65 on my final instead of a 60
How'd you end up doing on it
How did you do on your finals, siytz?
You are amazing and have your different and special way for explaining! Thanks a lot professor you are the best!!💙💙💙💙💙💙
Thanks, for what you are doing, your videos helped me a lot.
Omg! THANK YOU THANK YOU THANK YOU. You explained it so much more easier. I am now subscribed 👍🏾
Why does it look like Squidward at 3:03
the first 10 seconds of your video taught me more than all of university combined
I need to solve this mystery: Why do I understand you but not my teacher T_T ?? If I pass this class it'll be because of you :( Please make more videos plsssssss!!
everyone has a different capacity for explaining things! just tell your teacher about my channel and perhaps they will show my stuff in class!
Yes we have a group where I told everyone. They were relieved to find it! I was thinking about telling the teacher but she might get offensive that why don't I understand her :P idk I'll try tho.
Seriously, you explain really really well. Thank you for existing (bows)
Miki Falls or tell your teacher to record his lectures for his class so that you can watch them asynchronously at your own leisure.
Ok not even lying, i saw a meme about him being a chemistry Jesus and I came here because I got a chem 30 test tomorrow thinking what do I have to lose. Little did I know that he has FIVE VIDEOS OF WHAT WE ARE LEARNING THANK YOU CHEMISTRY JESUS
Me: Hear us O Lord for we call out Your name.
*ProfessorDaveappears*
Every chemistry and AP chem students shud watch this video what a blessing and summary tysm
When you have an AP test in 5 minutes so double speed is key.
Lmao your general chem playlist teaches me more in 30 mins than 3 weeks of class, you are the sole reason I’m passing chem
Anyone else taking finals soon?
Where were you when I needed you last year?????? This helped me so much!!!!
So helpful!!!!!!!!!
4:58 THANK YOU FOR THIS AMAZING TABLE OMG
5:00 literally saved my Chem grade haha
+Aslan Gossett happy to help!
Thanks so much, what I should have learned over the course of 2 days I learned in 6 minutes.