Quantum Chemistry 0.1 - Introduction

Short lecture introducing quantum chemistry.
Quantum chemistry is the application of quantum mechanics to chemical systems. Quantum mechanics is the laws of physics for very very small and very very light objects, such as electrons and nuclei. Quantum mechanics is very different from classical mechanics. In QM, we solve the Schrodinger equation for the wavefunctions of our particles, giving information about the probability of measuring various values for its physical properties. QM is very non-intuitive, and only certain allowed states are observed.
This course covers the content of a one semester undergraduate physical chemistry course, including chapters on early quantum theory, classical waves, the Schrodinger equation, particle in a box, principles of quantum mechanics, harmonic oscillator, rigid rotor, hydrogen atom, approximation methods, many-electron atoms, diatomic molecules, polyatomic molecules, symmetry and group theory, nuclear magnetic resonance, and particle in a ring.
Notes Slide: imgur.com/QqkIP...
-- About TMP Chem --
All TMP Chem content is free for everyone, everywhere, and created independently by Trent Parker.
Email: [e-mail]
-- Video Links --
Course Playlist: • Quantum Chemistry and ...
Course Review: • Quantum Chemistry Chap...
Other Courses: • PChem Course Intros
Channel Info: • About TMP Chem
-- Quantum Chemistry And Spectroscopy Chapters --
1) Early Quantum Theory: • Early Quantum Theory
2) Classical Waves: • Classical Waves
3) Particle in a Box / Schrodinger Equation: • Particle in a Box / Sc...
4) Fundamentals of Quantum Mechanics: • Principles of Quantum ...
5) Harmonic Oscillator: • Harmonic Oscillator
6) Rigid Rotor: • Rigid Rotor
7) Hydrogen Atom: • Hydrogen Atom
8) Approximation Methods: • Approximation Methods
9) Many-Electron Atoms: • Many-Electron Atoms
10) Diatomic Molecules: • Diatomic Molecules
11) Polyatomic Bonding: • Polyatomic Molecules
12) Symmetry and Group Theory: • Symmetry and Group Theory
13) Nuclear Magnetic Resonance: • Nuclear Magnetic Reson...
14) Particle in a Ring: • Particle in a Ring
-- Social Links --
Facebook: / tmpchem
Twitter: / tmpchem
LinkedIn: / tmpchem
Imgur: tmpchem.imgur.com
GitHub: www.github.com...
-- Equipment --
Microphone: Blue Yeti USB Microphone
Drawing Tablet: Wacom Intuos Pen and Touch Small
Drawing Program: Autodesk Sketchbook Express
Screen Capture: Corel Visual Studio Pro X8

[@dutonic]

I cannot believe this playlist exists. Doctorate level material available for free online. I cannot wait to dig into this. I’m so frustrated by the hand waving that has taken place when it comes to chemistry and physics, this is the only path I can see to help that

[@daniellewright3219]

I'm a PhD student taking Physical Chemistry and these videos are a BLESSING!

[@TMPChem]

Glad to help, Danielle. Good luck with everything.

[@md.nournoby4523]

Hi can you help me some topic of physical chemistry?

[@skygurl212000]

SAME DUDE Masters in Chem and I am so thankful for youtube and this guy making time to do this. THANK YOU!

[@marioamayaflamenco]

I wish I had had them when I was a PhD student in chemistry at Princeton in 1980. I got a D in Quantum Chemistry. My work was in synthetic organic chemistry but I've always regretted that I couldn't follow the QC course.

[@iqbalahmedkhan18]

@@marioamayaflamenco hiiii sirr

[@KeenestObserver]

I love how this chemistry teacher is the best I could find at explaining what I'm learning as a physics student.

[@TMPChem]

Whether a topic is physical chemistry or chemical physics is often more a matter of context rather than content. There are a great number of concepts here covered by both kinds of courses / texts.

[@alexandersadamune9211]

Just wanted to say thank you very much for putting up this playlist! I'm trying to learn quantum chemistry basics for research purposes and it really helps to have the information presented in a clear and easy to understand manner! Major props for being able to organize and release such a vast amount of information.

[@TMPChem]

Thanks Alexander. This playlist should cover almost all the quantum chemistry topics an undergraduate student would see in their course work. Studying and working through the examples here should put you in a position to be similarly prepared for entering research in this area as most university chemistry students with a 4-year degree.

[@saffrown]

your videos are an absolute blessing

[@TMPChem]

Glad you thinks so, AL.

[@emilstrkr3776]

Thank you so much for making these videos available for everyone, pure gold! This playlist is so nice and smooth! Very well done!

[@TMPChem]

Thanks Emil. Glad you like it.

[@SomithanKamal-nv1yc]

I am in Sri Lankan sir we are so blessed because of your vedio you and your family have a wonderful life always

[@anvithashyam3261]

Very helpful vedio. I am a chemistry student and I was having very difficult in understanding all this quantum chemistry. Everything is well explained and could catch easily. thanks for this vedio.

[@abhisheknoba]

Thank you sir, I am preparing for civil services (INDIA) with chemistry as an optional subject and these videos are helping me a lot. Thank you so much.

[@TMPChem]

Best of luck with your studies, Abhishek. I hope your effort pays off.

[@khaled1988able]

We wouldn't appreciate it enough, no matter how much we say thank you 🙏

[@hmute1338]

I am a chemistry student and thanks to these videos I am learning quantum chemistry and I could pass the exam.

[@TMPChem]

Excellent. Happy to help.

[@sir_beon2277]

H Mute how do you find quantum chemistry?

[@tanvirsingh3613]

Great channel I am from India and I am 15 years old and I have very great interest in quantum mechanics you are a great explainer sir

[@cerimite7674]

I am a savant in the energy field and have worked in analytical chemistry for 30 + years (retired). I have had several dreams that, although I had never realized much in the quantum realm, physicists are making similar discoveries. The quantum chemistry, physics, and etc., that I am self teaching is extremely difficult. So, thank you for making these concepts a visualizations, as I understand all these machinations in picture forms.

[@cc-hl9yo]

nice man I am an idiot (not yet an idiot savant but im working on it) and i dont understand anything

[@kiloton1920]

My doctor was giving me a chemistry into today because he inspired me to become a doctor and I’m about to go to school soon. He was explaining these concepts and mentioned inside the nucleus the laws are not the same as they are for things outside the nucleus, on the inside the laws of quantum mechanics applies, and Vice versa.

[@FatimaEXOL]

I'm just an A-level student but i really love chemistry and i'm so interested and excited to know the different parts of chemistry and i came across quantum chemistry and wanted to know about it and i found this video i'll study this even though i'm not supposed to haha

[@TMPChem]

Well, if you've had an introductory chemistry and physics course (which it was I suppose A-level is for each), then you can probably keep up with the material here should you desire to do so. Good luck with your studies.

[@FatimaEXOL]

@@TMPChem Thank you, I do chemistry and physics as well as biology A-level, alongside that i do some research and watch videos like this in my free time because of curiousity (mostly about chemistry and biology)

[@simonsays3391]

Great intro, I hope the following videos keep me intrigued as well! Im not a student anymore, and I havent done science since highschool, but I would love to learn all of this. The problem is there are too many hurdles to teaching yourself which disengage me often times and I lose momentum.

[@TMPChem]

That is the primary challenge for students and self-studyers alike. Learning a challenging technical subject is not easy, and frequently requires patient, deliberate, diligent practice to overcome the mental obstacles as they occur. What separates the people who succeed from the people who fail is often not intrinsic intellectual ability, but an intense refusal to quit.

[@simonsays3391]

@@TMPChem That certainly helps to keep things in perspective and I wholeheartedly agree with you. When I say this I don't speak of your channel, but I would generally enjoy the process so much more if educators (in person and online) would offload much of that effort and reduce the hurdles as they go along by decompressing jargon and all concepts with relatable examples, presenting the material in a more simplistic manner, and injecting their lectures with some entertainment value. I know it is a lot to ask, especially of free content (which is much appreciated regardless), but it is also difficult to sit and muster the willpower to study difficult concepts for 3 hours after a full day of work. It would be so enjoyable to be able to sit through hours of streamlined lectures and them intuitively clicking without having to pause, rewind dozens of times, Googling, and reading excessive supplementary material. For example, the PBS physics are animated incredibly well, however their script and delivery is just terrible for the audience they're trying to reach which is just a shame. I am not trying to burden you in any way with this, only sharing a perspective and appreciating your feedback. Cheers!

[@brandoncashin8317]

You're helping me through this quarantine semester a lot thank you!

[@yashodhanbhatawdekar5175]

I’m learning this in my first year of engineering. This is great! Thank you so much for making these videos.

[@arsalking8085]

you are illustrating this very easily and clearly thanks alot for these videos and keep it up sir

[@franciscomorales8102]

Thank you very much!!! I haven’t done chemistry in decades!!! I need all the help I can get!!

[@TMPChem]

Welcome back. Glad to have you here.

[@AhedAlmalla]

these videos are the best in the quantum world thanks from the heart ,

[@TMPChem]

Thanks Ahed. Doing what I can.

[@rimsharana2782]

Thank you so much! You have made my life so much easier!

[@SunMai93]

Thank you so much to provide this video! Really nice and easy to understand

[@TMPChem]

Thanks Sun.

[@giriff8398]

Very nice intro❤❤❤

[@whisperingsquid5630]

Ty for the content this is a great help and is very easy to digest

[@maryamkbaig7004]

Thank you a lot 💖🥺 solved my problem, wish you best of luck

[@MEGANALMACHANI]

I am extremely greatful to you for making these vedios....

[@lucascsrs2581]

Absolutely awesome content.

[@estefaniarojas5489]

I'm just in love of your videos, thank you 💕, really, you are just helping me a lot putring all the maths and chemist meaning together

[@nichikoxd2510]

Hahah ur play list is so good, our prof reccomends us go watch u.

[@TMPChem]

Your prof is wise. 10/10.

[@guri__mann]

you are an amazing person. Thanks for this! I will definately go through all of your videos.

[@TMPChem]

I am happy there are amazing students who are dedicated to the process of learning and becoming productive contributors to the expansion of the collective knowledge base of our civilization.

[@guri__mann]

TMP Chem, I couldn't agree more. Quantum mechanics is such an intresting subject and there is a lot to know about it and be fascinated with it's brilliance. Also, since my research area is computational chemistry, i find these set of lectures along with the computational series very useful and stimulating. Thanks! :)

[@koreboredom4302]

Wow this is a real thing? I literally just slapped two sciency words together and this popped up.

[@sahenasalam4797]

Thank you so much for this great work.❤

[@larbio.4885]

Thank you so much !!

[@thanseelaak1161]

Pls upload more waiting for your classes..pls come back soon

[@jeronimosj16]

So much to thank you my friend, I'm learning

[@TMPChem]

Happy studies, Jeronimo.

[@denisbartko6012]

Man great job with this simple explanation of quantum, but you should consider swapping intuitive and non-intuitive in that Classical vs Quantum columns. I am pretty sure you are mistaken in this and if you need further insight into the problem I can give you explanation. Thanks

[@denisbartko6012]

I will explain anyways but first lets replace "non-intuitive" with "logical" so it makes more sense. Everything (maybe except smell and taste?) has to have its opposite side to exist. The duality... Love-fear light-dark good-evil happy-sad jin-jang matter-antimatter positive-negative hot-cold ... Imagine the earth, the world, the whole universe but without life. Nothing is alive in this universe, life has never existed and will never be created. What is death in this universe? It cannot exist. Now great example is with a baby because it helps to discover the difference between intuitive and subconscious. When you are born you have like no consciousness and almost empty subconsciousness. It means you are not familiar with ANY laws of physics and you are not able to do logic things like calculations and measurements. As a baby, maths and physics is non-intuitive for you because it is logical and you lack logic. It is only later on in life that your subconsciousness learns them physical laws which become HABITS the same way as driving skills. Lets say you just celebrated your 6th birthday. You are already used to gravity and can predict how it will affect future despite the fact you don't understand or have consciously learned anything about it. It's just simple - push glass off table, it will fall on the ground. It may get little tricky here but it is your subconscious logic, not intuition what makes you predict that the glass will fall. On the other hand what was intuitive for you after birth was that feeling of safety while in your mothers arms. What drives the car while you are talking to your seatmate is your subconsciousness. Intuition is that what gives you feeling "I don't know why, I have no reason to, but this time I don't FEEL comfortable using the road I usually drive to get to job". To summarize... Logic counts and measures matter, shows you numbers. It gives you determinate exact outcome that should be true. In case of no failures, mistakes or misinterpretations it shows you the future as it will be. Intuition somehow counts and measures energy, the result is feeling. It only gives you probabilities of possible outcomes. If you want to predict future, it is possible to do so logicaly by calculating / following patterns (no random events) or intuitively by feeling (randomness). When making your next decisions, please, use your whole brain instead of just one hemisphere and listen to both your logic and intuition. -If they are in harmony both telling you the same thing, your decision is good. -If they say something different, it means one must be false, but you can choose between them according to which side of duality concept "logical/intuitive" the situation fits better. Its due to randomness that many times it is better to use intuition instead of logic although it seems using logic is better option. -If you listen to only one hemisphere at a time, you probably have troubles making good decisions in some aspects of your life. You simply don't solve "How much will I pay for 420 bananas if package of 20 costs 6.89 crowns?" by intuition or apply much logic to love.

[@16baad]

I can't thank you enough. Thank you.

[@TMPChem]

You just did. You're welcome.

[@seisoxaba3243]

He makes the most complex science concepts to sound as easy as ABC 🙏🏿🤌🏿🤌🏿

[@kiloton1920]

Thanks this is fascinating stuff

[@eliaderenda2041]

Man, you are the best!

[@mark0032]

Dropped out of school at 15. May as well give this a whack in lock down. Bring it on!

[@TMPChem]

Hi Mark. IMO people heavily over-value traditional academic credentials and heavily under-value what can be achieved by a highly-motivated bright person in the absence of any traditional instruction. In the physical chemistry (i.e. the general channel overall) intro, I discuss that the typical knowledge needed for success in PChem includes algebra, calculus, and general chemistry. But even without those, if you just look things up and spend the time to figure it out whenever something is discussed that you have no idea about, I don't see any reason why a motivated, bright person of any background couldn't make it through this course given enough time and effort.

[@mark0032]

@@TMPChem Thank you for the reply, I was just being goofy. I did infact leave school at 15 but returned to college later. I done chem 1 and 2 along with further study in organic chemistry, did calculas 1 and 2. I was very surprised of how much of what I thought was outside my ablity just wasn't. Thank you for the words of support.

[@JessieJussMessy]

Wow nice stuff. Thank you!

[@Nirvaga]

thanks for this.

[@brendansmith670]

Hello TMP,When will the quantum 2.0 videos be released? Will they be in a different section or would inserted in as a replacement for the quantum 1.0 videos? And as always, these videos are really the best free source of physical chemistry on the web. At the very least, they are by far the best value. The amount fo truth per unit time in these videos results in a very favorable number for viewers!

[@TMPChem]

Hi Brendan. Quantum 2.0 is complete. You are commenting on the first video of 2.0. The videos have replaced the old versions in the Quantum Chemistry and Spectroscopy Playlist on this channel (kzbin.info/aero/PLm8ZSArAXicL3jKr_0nHHs5TwfhdkMFhh). Version 1 videos now have a title suffix "(old)" now. Version 2 videos have the same (or a very similar) title without that suffix. The annotations and links within version 2 videos will always take you to another version 2 video.

[@brendansmith670]

Ok great, thank you!

[@Durzo1259]

Maybe it's just me, but I came on here to find out what the heck quantum chemistry is and all I got was a basic rundown of what quantum physics is. I wanted to know how it applies to chemistry....

[@ObsessedWithHotness]

Thank you so much....

[@ik4rus816]

Hello. TMP instructor. I am Korean student majoring in chemistry. You helped me a lot(last semester I got A0 in Physical Chemistry), so I want to make these style video in Korean. Would you tell me how I make video like these lecture(what program do you use)? Thank you.

[@TMPChem]

Hi Joshua. The description under each video contains information on the hardware and software programs I use in the creation of these videos. Wishing you the best.

[@sanaishere18]

I am a chemistry/materials science major and my physical chemistry 1 professor was amazing but just started physical chemistry 2 and we are learning quantum chemistry and my professor is so bad :( He’s so bad at explaining concepts. I already feel like your 6 and half minute video has taught me more than his 2 days of lecturing on this subject lmao.

[@inhkynguyen3792]

Tks sir, that's great to learn from Viet Nam high school

[@inhkynguyen3792]

I am really love that

[@inhkynguyen3792]

@ROHIT RANA oh don't misunderstand. I engaged in National Competition, so I have to study that, not for all students in VN

[@inhkynguyen3792]

@ROHIT RANA many tks sir UwU

[@anilsharma-ev2my]

Wormholes are eating up like termites Whole cosmos and it becomes coral cosmos which further gives support to life Chayavit is properly defined this situation

[@msliyanage8411]

Thank you sir 🌻

[@kiloton1920]

Could you not theoretically create new forms of artificial life by using this kind of quantum chemistry, possibly in combination with some nuclear stuff too? (sorry if this is a dumb question is just came to mind and I don’t know all that much yet)

[@sinagholamimalek5569]

great

[@thevoicenote5666]

Thank you sir ...it's awesome....

[@TMPChem]

Thanks for stopping by, Souvik.

[@thevoicenote5666]

@@TMPChem welcome 💖

[@kitymaurya3102]

Very nice video sir

[@TMPChem]

Thanks Kity

[@demetrio6159]

You should have more subscribers Thank you

[@jeevanlal324]

very useful videos

[@TMPChem]

Thanks Jeevan.

[@brianl3156]

If it’s possible to replace settings of quantum particles, what would be the study of such?

[@brianl3156]

That is the study of arranging such settings.

[@brianl3156]

I am referencing the hardon particles.

[@TMPChem]

Hi Brian. Not sure what you're referring to. Sounds like that would be a particle physics concept. In quantum chemistry we're primarily concerned with electrons, which are fermions.

[@djffkdldkrdfffk1872]

Thank u sir

[@TMPChem]

Thanks for watching, user name without vowels.

[@KacemAmineJa]

Great Job Trent (y) Thank you

[@TMPChem]

Thanks as always, Kacem.

[@josephlau13d77]

Hey nice intro. What do you think about QM=GR and ER=EPR? Entangled black holes are connected by an Einstein Rosen Bridge, so general relativity and quantum mechanics are indeed connected. This can also lead to the holographic principle which is quite intriguing, thoughts?

[@franciscomorales8102]

So, are there is 0.1, or you go straight to 1.1? I’m ready to learn from all your videos!

[@TMPChem]

Hi Francisco. 0.1 are typically intro videos, and the only video of 0.X where X > 0. The first non-intro video in the course will always be 1.1. For each chapter, X.0 is a review video, which contains a short summary of all the videos in the chapter, and would typically be most helpful after viewing an entire chapter. Also, each course has a 0.0 which is a short review of all the chapters of the course. Each course also has an associated playlist where all course videos appear in order. Search "quantum chemistry and spectroscopy playlist" to find it for this course. See the channel page for all available courses.

[@koby9340]

hello there, can anyone please tell me what are the prerequisites for this playlist

[@ayushyadavayushyadav4655]

Thanks sir please sir all lesson videos serial vice video apdate

[@TMPChem]

Not sure what that means.

[@sourodipghoshdastidar1559]

you say that classical mechanics is continuous versus quantum mechanics being discrete/quantised. However in classical mechanics, when we solve Ordinary differential equations, we use an infinitesimally small step dx for example, so in that scenario, wouldn't quantum mechanics be applicable at that infinitesimal dx level ?

[@miloradowicz]

Differentials and integrals don't work on discontinuous functions. Also quants are not infinitsimally small.

[@anshulkapila7572]

Is it sufficient ????? Means 160 videos to understand quantum chemistry ?

[@TMPChem]

If you thoroughly studied the content presented in these 160 videos you'd have a similar level of understanding of quantum chemistry as some of the better graduates of good US universities. Of course that wouldn't be sufficient to start publishing peer-reviewed research without supervision, but it's a good start to being able to use these concepts in your own work, research, or further study. There is a strange thing that happens as one learns more and more about a topic: you learn how much more there is to know about a topic than what you currently know, and that horizon expands much faster than the speed at which you learn, thus becoming and expert on a topic is the process of realizing just how little you know about it. There are certainly a large number of more advanced topics in quantum chemistry, but this course represents the undergraduate-level fundamentals.

[@ronin6158]

subscribed and liked, hope u toob is getting you some cash flow. You deserve it for the amount of work you put into all this content!

[@anilsharma-ev2my]

Schreudinger cat 🐱 ion an ion Wow it's both at a single time How curiosity kills the cat It may be electrocuted 😝😝😝

[@danv8718]

Could I hire you to read my favorite novels? :)

[@minkway522]

Should have clicked your videos earlier.... you saved me!

[@TMPChem]

The apt phrase here is the old cliche, "you can lead a horse to water, but you can't make it drink." No matter how many resources of whatever quality are available to individuals of any aspiration, all such tools are useless without the individual's aspiration to improve themselves. Others can assist you in finding the path, but you will save yourself through your own efforts.

[@Jiteshprabhu23]

#Inspiring

[@25kiloperhour]

hallelujah

[@TMPChem]

So they say.

[@jenniferlaflora3293]

Careless whispers on the good front 5:59

[@kekero540]

Time for me to develop another unhealthy hyperfixation for the next few months.

[@anilyadab3587]

all video in hindi for quantum chemistry

[@rubixcubesolve]

no

[@aabhasrai303]

I am from IIT , we have the same lectures ! Lol ! who is copying ?

[@TMPChem]

Hmmm...or maybe we both copied the same person? I guess we'll never know.

[@amanrubey]

Which IIT!!

[@amanrubey]

So you use these videos??

[@Astro-X]

This is pretty much solely a quantum physics course so why not just call it Quantum Physics rather than Quantum Chemistry... Also it would be pretty good if you can display each of the info as a slide and not everything on one page. Apart from that, excellent.

[@TMPChem]

Hi Astro. Well it's a quantum chemistry course because the applications it focuses on are...chemistry. Is there a significant degree of overlap between the two topics? Yes. Would having an expert level knowledge of one lead you to have a stellar performance in the final exam for the other? No. They start off quite similar for the first 4 chapters or so, but by chapter 9 we're doing things that most physics students have never heard of. I am also very strongly opposed to having more than one full slide of notes per video, both for aesthetic / ease of use reasons, as well as the focus and precision of scope it necessitates.

[@Astro-X]

Fair enough on the quantum chemistry. But I think you misunderstood me on the notes. Instead of having the notes all ready on one slide, maybe you can write it as you explain it. Or have one line of working for each slide. Anyways I'm doing a 3rd year quantum physics course and this playlist is really helping me out understand material I cannot in class.

[@TMPChem]

Understood. That is some people's preference, and is the way it was during the first version of these courses (which you can still find in the corresponding (Old Version) of each video). The benefits to doing it pre-prepared are: my handwriting is *much* better, I make far fewer typos, I don't have to divert my attention from the screen and focus solely on the slide while talking, videos take ~30% less time when all the writing time is cut out, the slide has a much better / more aesthetic design, and pausing at any time allows you to search through / write notes / read any of the text from the entire video.

[@DarthVader-hl8ro]

TMP Chem Agreed with your point. I really prefer prepared slides over spending so much time writing in videos, which is the reason I can't ever stand watching Khan Academy videos.