Quantum Mechanics

The particle nature of light

Blackbody Radiation and Planck's Law The Photoelectric Effect X-ray Spectra The Compton Effect

The wave nature of matter

Matter Waves (de Broglie Waves) - Things Taken for Particles Have a Wavelength Too The Electron Double Slit - Fringes Appear Even When Sent One at a Time The Uncertainty Principle - Narrowing the Position Spreads the Momentum

Energy levels of atoms

The Bohr Model - Only Orbits Holding a Whole Number of Waves Remain The Hydrogen Spectrum - Level Differences Become the Positions of the Lines The Franck-Hertz Experiment - Checking That the Levels Are Discrete Without Using Light

The Schrödinger equation

The Potential Well - A Trapped Wave Becomes a Standing Wave, and the Energy Comes Out Discrete Quantum Tunneling - A Wave Gets Through a Barrier It Cannot Climb The Schrödinger Equation - The Conditions Placed by Hand Come Out of the Equation Itself The Harmonic Oscillator - Evenly Spaced Levels, and What Planck Assumed Comes Out of the Equation

Angular momentum and the hydrogen atom

Quantization of Angular Momentum The Schrödinger Equation for the Hydrogen Atom The Shapes of Atomic Orbitals

Spin and the periodic table

The Stern-Gerlach Experiment The Pauli Exclusion Principle The Periodic Table and Electron Configurations

Molecules and solids

The Hydrogen Molecular Ion and the Covalent Bond Periodic Potentials and Energy Bands Metals, Insulators and Semiconductors

Entanglement

Two Entangled Spins and the Correlations Between Their Results Bell's Inequality and the Experiments That Violate It