Khan Academy
Khan Academy: Chemistry: Valence Electrons
Using information about electron configuration to determine elements react with other elements. [15:23]
Khan Academy
Khan Academy: Chemistry: Introduction to P H, P Oh, and P Kw
A description of the autoionization of water. [18:09]
Khan Academy
Khan Academy: Chemistry: Groups of the Periodic Table
An explanation of the families, or groups, of the periodic table. [11:51]
Khan Academy
Khan Academy: Chemistry: Electron Configurations
How to determine electron configurations. [10:04]
Khan Academy
Khan Academy: Chemistry: Periodic Table Trends: Ionization Energy
The energy to remove an electron, or ionization energy, is explained. [12:13]
Khan Academy
Khan Academy: Chemistry: Types of Decay
The various ways a nucleus can decay, including Alpha, Beta and Gamma decay as well as positron emission. [17:02]
Khan Academy
Khan Academy: Chemistry: Half Life
A video lecture discussing radioactive decay and half lives. Understand how half life and the mass of the compound remaining is calculated by following the examples given in the lecture. [12:31]
Khan Academy
Khan Academy: Chemistry: Titration Roundup
An explanation of how pH changes during various acid-base titrations. [11:02]
Khan Academy
Khan Academy: Chemistry: Orbitals and Electron Configuration
A detailed look at orbitals and an introduction to electron configuration. [14:31]
Khan Academy
Khan Academy: Chemistry: Elements and Atoms
Learn about the relationship between elements and atoms in this video lecture. Understand the basics of how protons, electrons, and neutrons make up an atom and how elements relate to atoms. [13:09]
Khan Academy
Khan Academy: Chemistry: Spectrophotometry Introduction
A video lecture describing how spectrophotometry works in terms of absorbance and transmittance. All terms are defined using examples and detailed explanations. Also explored is how the Beer-Lambert law can be applied to find an unknown...
Khan Academy
Khan Academy: Chemistry: Gibbs Free Energy Example
An explanation of how to determine whether or not a reaction is spontaneous based on the change in Gibbs free energy. [9:57]
Khan Academy
Khan Academy: Chemistry: Orbitals
A detailed discussion of the probability functions around the nuclei of atoms, otherwise known as orbitals. [13:37]
Khan Academy
Khan Academy: Chemistry: Electron Configurations 2
Determining electron configurations for d-block elements. [10:18]
Khan Academy
Khan Academy: Chemistry: The Mole and Avogadro's Number
An introduction to the number mole, or 6.02 times 10 to the 23rd degree, also known as Avogadro's Number. [9:44]
Khan Academy
Khan Academy: Chemistry: Another Stoichiometry Example in a Solution
A video lecture showing a procedure for completing a stoichiometry problem where the reaction is occuring inside a solution. The problem is a standard problem found in a textbook and a step by step explanation is given for solving it....
Khan Academy
Khan Academy: Chemistry: Macrostates and Microstates
A video lecture exploring the difference between macrostates, microstates, and thermodynamic equilibrium. Understand how macrostates is best defined when the system is in thermal equilibrium and describes pressure, temperature, and...
Khan Academy
Khan Academy: Chemistry: Example of Finding Reactant Empirical Formula
A video lecture solving a problem to find the empirical formula based on a chemical reaction. To find the empirical formula the video gives a step-by-step procedure to figure out the equation, molar mass, and the empirical formula. [17:41]
Khan Academy
Khan Academy: Chemistry: More Rigorous Gibb's Free Energy
A video lecture that derives the Gibb's free energy equation. The video starts by reviewing what a irreversible and reversible process is with explanations and diagrams. While describing irreversible and spontaneous process the formula...
Khan Academy
Khan Academy: Chemistry: Hess's Law Example
A video lecture showing a step by step procedure for solving a Hess's law problem from a textbook. The problem instructs students to find the enthalpy change using the heat of formation. [12:08]
Khan Academy
Khan Academy: Chemistry: Carnot Cycle and Carnot Engine
A video lecture discussing the four processes of the Carnot cycle. Each step of the process is described and illustrated relating the temperature change and whether heat was absorbed or released. Also explained is the P-V diagram for the...
Khan Academy
Khan Academy: Chemistry: Maxwell's Demon
A video lecture explaining that the Maxwell's "demon" does not contradict the second law of thermodynamics. Video begins by reviewing the second law of thermodynamics which states that the universe tends to move towards more entropy....
Khan Academy
Khan Academy: Chemistry: More on Internal Energy
A video lecture that explores internal energy and how to calculate how much heat is transferred to or from the system. Lecture gives examples to help your understanding of the concepts. [13:45]