Electron Energy Levels and Photons - IB Physics

I explain electron energy levels, what it means for electron energy to be quantized, what must happen for an electron to jump to a different energy level, how to find the possible energies of photons emitted and absorbed by atoms based on their energy levels.

Lecture video on photons and energy: https://www.youtube.com/watch?v=3T8T7...

0:00 Negative Energy
2:06 Electrons and Negative Energy
4:23 Vocabulary
5:41 Quantized Energy
6:35 Notation for Energy Levels
7:14 Photons and Electron Energy
9:32 Finding Possible Photon Energy
12:36 Frequency and Wavelength
12:57 Example 1: Frequency and Wavelength
14:55 Example 2: Proportional Reasoning
16:38 Example 3: Absorbing a Photon
17:10 Example 4: Calculating Energy Levels
18:25 Extra Notes