Chemistry - in-depth

Study the substances that form the various matters in the world. Investigate the properties and reactions the different substances and delve into the processes required to form new substances. Created by Khan Academy.

Average Course Length

30 hours

Skill Level


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1: Elements and Atoms
2: Introduction to the atom
3: Orbitals
4: More on orbitals and electron configuration
5: Electron Configurations
6: Electron Configurations 2
7: Valence Electrons
8: Groups of the Periodic Table
9: Periodic Table Trends: Ionization Energy
10: Other Periodic Table Trends
11: Ionic, Covalent, and Metallic Bonds
12: Molecular and Empirical Formulas
13: The Mole and Avogadro's Number
14: Formula from Mass Composition
15: Another mass composition problem
16: Balancing Chemical Equations
17: Stoichiometry
18: Stoichiometry: Limiting Reagent
19: Ideal Gas Equation: PV=nRT
20: Ideal Gas Equation Example 1
21: Ideal Gas Equation Example 2
22: Ideal Gas Equation Example 3
23: Ideal Gas Example 4
24: Partial Pressure
25: States of Matter
26: States of Matter Follow-Up
27: Specific Heat, Heat of Fusion and Vaporization
28: Chilling Water Problem
29: Phase Diagrams
30: Van Der Waals Forces
31: Covalent Networks, Metallic, and Ionic Crystals
32: Vapor Pressure
33: Suspensions, Colloids and Solutions
34: Solubility
35: Boiling Point Elevation and Freezing Point Supression
36: Introduction to Kinetics
37: Reactions in Equilibrium
38: Mini-Video on Ion Size
39: Keq Intuition (mathy and not necessary to progress)
40: Keq derivation intuition (can skip; bit mathy)
41: Heterogenous Equilibrium
42: Le Chatelier's Principle
43: Introduction to pH, pOH, and pKw
44: Acid Base Introduction
45: pH, pOH of Strong Acids and Bases
46: pH of a Weak Acid
47: pH of a Weak Base
48: Conjugate Acids and Bases
49: pKa and pKb Relationship
50: Buffers and Hendersen-Hasselbalch
51: Strong Acid Titration
52: Weak Acid Titration
53: Private video
54: Titration Roundup
55: Introduction to Oxidation States
56: More on Oxidation States
57: Hydrogen Peroxide Correction
58: Redox Reactions
59: Galvanic Cells
60: Types of Decay
61: Half-Life
62: Exponential Decay Formula Proof (can skip, involves Calculus)
63: Introduction to Exponential Decay
64: More Exponential Decay Examples
65: Macrostates and Microstates
66: Quasistatic and Reversible Processes
67: First Law of Thermodynamics/ Internal Energy
68: More on Internal Energy
69: Work from Expansion
70: PV-diagrams and Expansion Work
71: Proof: U=(3/2)PV or U=(3/2)nRT
72: Work Done by Isothermic Process
73: Carnot Cycle and Carnot Engine
74: Proof: Volume Ratios in a Carnot Cycle
75: Proof: S (or Entropy) is a valid state variable
76: Thermodynamic Entropy Definition Clarification
77: Reconciling Thermodynamic and State Definitions of Entropy
78: Entropy Intuition
79: Maxwell's Demon
80: More on Entropy
81: Efficiency of a Carnot Engine
82: Carnot Efficiency 2: Reversing the Cycle
83: Carnot Efficiency 3: Proving that it is the most efficient
84: Enthalpy
85: Heat of Formation
86: Hess's Law and Reaction Enthalpy Change
87: Gibbs Free Energy and Spontaneity
88: Gibbs Free Energy Example
89: More rigorous Gibbs Free Energy/ Spontaneity Relationship
90: A look at a seductive but wrong Gibbs/Spontaneity Proof
91: Stoichiometry Example Problem 1
92: Stoichiometry Example Problem 2
93: Limiting Reactant Example Problem 1
94: Empirical and Molecular Formulas from Stoichiometry
95: Example of Finding Reactant Empirical Formula
96: Stoichiometry of a Reaction in Solution
97: Another Stoichiometry Example in a Solution
98: Molecular and Empirical Forumlas from Percent Composition
99: Acid Base Titration
100: Spectrophotometry Introduction
101: Spectrophotometry Example
102: Hess's Law Example
103: Vapor Pressure Example
104: Change of State Example