PBS
Why Is 1/137 One of the Greatest Unsolved Problems In Physics?
The Fine Structure Constant is one the strangest numbers in all of physics. It’s the job of physicists to worry about numbers, but there’s one number that physicists have stressed about more than any other. That number is 0.00729735256 -...
Bozeman Science
The Bohr Atom
In this video Paul Andersen describes the major parts of an atom and explains how the Bohr Model more accurately represents the location of electrons around the nucleus. Niels Bohr refined the Rutherford model to account for spectra.
Bozeman Science
Atomic Models
In this video Paul Andersen explains how the atomic model has changed over time. A model is simply a theoretical construct of phenomenon and so when we receive new data we may have to refine our model. Ionization energy data resulted in...
Curated Video
Negative Energy: Understanding Hydrogen's Electron
In a hydrogen atom, the electron is bound to the nucleus, so its energy is negative. This shows that it is in a bound state. When there is negative energy, it means that the electron is stable. It is inside the atom because its negative...
Curated Video
What is an atom made of
What is an atom? And what is it made of? In this video, I will be introducing you to the atom. We will also look at concepts like atomic mass, elements and isotopes.
Curated Video
Why does chemistry happen?! Element Stability and the Octet Rule!
Why does chemistry happen?? Why do ions form?? Why do elements bond together?? These are all important questions and the answer comes back to one very important principle in chemistry and that is element stability. Elements are stable...
Curated Video
Coulomb's Law Explained!
Coulomb’s Law is one of the most important laws when it comes to atomic structure and being able to understand and explain atomic properties. It helps to relate the force between two charged particles and can be represented by the...
Curated Video
Periodic Trend - Atomic Size (Radius) Explained!
The periodic trend for atomic size is that the size of the atom gets bigger as you go down the periodic table and from right to left across the periodic table. This trend is sometimes referred to as atomic radius as there is a direct...
Curated Video
Charges in Atoms, Atomic Models, and Quantum Numbers
This video explains how the different particles in an atom have charges, how the different particles affect the overall charges of an atom, and how atomic models are created.
Mazz Media
Models
This live-action video program is about the word models. The program is designed to reinforce and support a student's comprehension and retention of the word models through use of video footage, photographs, diagrams and colorful,...
Professor Dave Explains
IIT/JEE Chemistry Practice #12: Atomic Structure
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Catalyst University
Quantum Mechanics | The Hydrogen Line Spectrum
Introductory video to the hydrogen line spectrum, which in part led to the initial development of quantum mechanics.
Professor Dave Explains
IIT/JEE Chemistry Practice #13: Atomic Orbitals/Quantum Numbers
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Practice Problem: The Bohr Model and Photon Wavelength
With the Bohr model we start to get a better sense of the nature of matter, particularly the way light interacts with atomic matter such that we can see it. But how do we do calculations regarding these interactions? Let's practice now!
Flipping Physics
Determining the Speed of the Electron in the Bohr Model of the Hydrogen Atom
Assuming a circular orbit of the electron about the nuclear proton in the Bohr model of the hydrogen atom, determine the speed of the electron.
Professor Dave Explains
Quantization of Energy Part 2: Photons, Electrons, and Wave-Particle Duality
So Max Planck kicked things off, but how does the story of modern physics continue? With none other than your favorite scientist and mine, Albert Einstein! He did more than just stick his tongue out and have crazy hair. He elucidated the...
Catalyst University
Quantum Mechanics | The Bohr Model of the Atom
What are the issues with the Bohr model of the atom (Neils Bohr)? Some issues with this mode helped early physicists invent and develop the discipline of quantum mechanics.
Professor Dave Explains
Bohr Model of the Hydrogen Atom
Why don't protons and electrons just slam into each other and explode? Why do different elements emit light of different colors? Niels Bohr knew why. And now you will too!
Mazz Media
Molecular Clocks
Through real world footage and animated graphics, this video explains what molecular clocks are and how they are used. The program discusses molecular clocks' calibration and their reliability. In addition, students are provided with...
Curated OER
Bohr Model of the Atom
Your fifth graders will totally get atomic structure after viewing this clip. The Bohr Model of the Atom is defined by its parts, mass, and function. Each part of the atom is personified to help learners remember what they are and how...
Khan Academy
Khan Academy: Chemistry of Life: Electron Shells and Orbitals
A video lecture explaining the movement of the electrons around the nucleus in orbitals. Video describes the orbital's energy shell and shape. Also discussed is the connection of the location of the electrons to the periodic table. [13:37]
Khan Academy
Khan Academy: Heisenberg Uncertainty Principle
An explanation of Heisenberg's Uncertainty Principle. [10:18]
Khan Academy
Khan Academy: Orbitals
A video introducing orbitals and how electrons "get" to orbital levels. [13:37]
Khan Academy
Khan Academy: Bohr Model Radii
An explanation that uses physics to derive the Bohr model radii. [10:52]