Physical Chemistry - Introduction

Short lecture introducing physical chemistry.

Physical chemistry is the use of the laws of physics to develop insight into chemical systems. Physical chemistry it typically studied for 2 or 3 semesters by undergraduate chemistry students. Prerequisites include general chemistry, general physics, algebra, trigonometry, and calculus. Subdivisions of physical chemistry include quantum chemistry, spectroscopy, thermodynamics, kinetics, and statistical mechanics.

This channel includes courses on Quantum Chemistry and Spectroscopy, Chemical Thermodynamics and Kinetics, Computational Chemistry, and PChem Math, as well as review videos within each chapter and course.

--- About TMP Chem ---

All TMP Chem content is free for everyone, everywhere, and created independently by Trent Parker.

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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

[helenabell]

every chem major watching as many videos before they have to survive their first PChem class

[rahii]

I am screaming my gratitude to God rn!! 🙌🏽🙌🏽🙌🏽 I am so glad to have found your channel.

[glow]

I’m so glad this channel exist! Thank you for all the content you’ve uploaded, really helpful

[foodparadise]

I still have a year away from taking this class. I'd better start studying. This channel is a treasure trove for me. BIG THANKS

[daughteroftheking]

Wow heroes in disguise actually exist thank you. Will definitely use this for my undergraduate classes!

[notglouria]

Thank you so much for uploading this and all your other content!!
I love that you make education easy understand and free to access

[sccm]

I kind of want to watch videos on physical chemistry. It really draws my attention, but I feel like I wouldn't understand as much since I haven't taken physics yet. I'm only finishing general chemistry 2.

[TCXGamer]

Major : Chemical Engineering
and we have this course .

[UhoudAaMm]

hello...
could you please make videos about the physical chemistry comprehensive exam for Ph.D. students:
in how to prepare for the exam.. and a lot of exercises and problems...
If you have some examples of these exams, could you show us..

thank you...

[hfilipenk]

Extended and in-depth theory of metallic bonds.

The main problem is that, using X-rays, the types of crystal lattices of different metals were determined, and why they are so and not others is not yet known. For example, copper crystallizes in the fcc lattice, and iron in the bcc lattice, which when heated becomes fcc and this transition is used in heat treatment of steels.



Usually in the literature, the metallic bond is described as carried out through the socialization of the outer electrons of the atoms and does not have the property of directionality. Although there are attempts (see below) to explain the directional metal bond since the elements crystallize into a specific type of lattice. The main types of crystal lattices of metals are body-centered cubic; face-centered cubic; hexagonal close-packed.
It is still impossible in the general case to deduce the crystal structure of a metal from the electronic structure of the atom from quantum-mechanical calculations, although, for example, Ganzhorn and Delinger pointed out a possible connection between the presence of a cubic body-centered lattice in the subgroups of titanium, vanadium, chromium and the presence of valence d in the atoms of these metals -orbitals.
It is easy to see that the four hybrid orbitals are directed along the four solid diagonals of the cube and are well suited for bonding each atom with its 8 neighbors in a body-centered cubic lattice. In this case, the remaining orbitals are directed to the centers of the unit cell faces and, possibly, can take part in the bond of the atom with its six second neighbors. The first coordination number (K.Ch.1) \ "8 \" plus the second coordination number (C.Ch.2) \ "6 \" in total is \ "14 \".

Let us show that the metallic bond in the closest packing (HEC and FCC) between the centrally selected atom and its neighbors, in the general case, is presumably carried out through 9 (nine) directional bonds, in contrast to the number of neighbors equal to 12 (twelve) (coordination number).
In the literature, there are many factors affecting crystallization, so I decided to remove them as much as possible, and the metal model in the article, let's say, is ideal, i.e. all atoms are the same (pure metal), crystal lattices without inclusions, without interstices, without defects, etc. Using the Hall effect and other data on properties, as well as calculations by Ashcroft and Mermin, for me the main factor determining the type of lattice turned out to be the outer electrons of the core of an atom or ion, which resulted from the transfer of some of the electrons to the conduction band.


It turned out that the metallic bond is due not only to the sharing of electrons, but also to the outer electrons of the atomic cores, which determine the direction or type of the crystal lattice.

Let's try to connect the outer electrons of an atom of a given element with the structure of its crystal lattice, taking into account the need for directed bonds (chemistry) and the presence of socialized electrons (physics) responsible for galvanomagnetic properties.
see the main part of the work on p.
in Russian and in English


I consider the main achievement of my work that the real first coordination number for atoms in single crystals of pure metals (fcc and HEC crystal lattices) was determined equal to 9. This number was deduced from the physical and chemical properties of crystals.

[hairyasstruman]

I love P Chem. It wasn't always like that. The course seemed to be all over the place. Things didn't start to click until I was halfway through P Chem 2

[mariofigueroa]

I really wanted to take physical chemistry, but my university does not offers the class. I guess i'll just watch these videos for fun.

[austinb]

Was looking for a book at my college bookstore. Saw a physical chem textbook, so I decided to open it. I immediately closed it lmao

[aymmenbatool]

Are the concepts of spectroscopy and thermodynamics related to Is their origin physics

[Pak-otll]

i like the lecture clear and understandable just a friendly advice try adding a series of pics it helps the brain memorize it

[diya-pwtj]

It would be good if you put these information with the help of some pictures

[sleverlight]

Im planning to take minor in Chemistry

[JaredBroker]

Thanks for your work. This is awesome! #chemistry

[khanhttran]

Do we need to take orho before taking pchem?

[MissionSilo]

Thanks. Not sure how this would help a wanna be hobbist but thanks