Khan Academy
Khan Academy: Chemistry: Introduction to Oxidation States
Using water as an example this video module explores how oxidation numbers are assigned. Also explained is the concept of oxidation states with one elements being oxidized and the other being reduced. Trends of oxidization states are...
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Khan Academy: Chemistry: Introduction to Stoichiometry
Work through balancing equations with this video module. As equations are worked suggestions and steps are given to help students develop techniques to balance chemical equations. [14:28]
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Khan Academy: Chemistry: Formula From Mass Composition
Learn how to calculate the empirical formula of a compound by knowing the mass composition. The video gives two step-by-step examples of how to figure out the empirical formula. [12:58]
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Khan Academy: Chemistry: Other Periodic Table Trends
A video lecture discussing the trends on the periodic table dealing with ionization energy, electronegativity, metallic nature, and atomic radius size. The video shows how electronegativity increases to the top right of the periodic...
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Khan Academy: Chemistry: Redox Reactions
Study redox reactions in this video. Several examples of reactions are given showing how to determine a compound's oxidation state and whether it was reduced or oxidized. Also students will understand how to determine whether the...
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Khan Academy: Chemistry: Hydrogen Peroxide Correction
A follow up to an error made in a previous video( Khan Academy: Chemistry: More on Oxidation States) where the oxidation state of oxygen in hydrogen peroxide was shown incorrectly. This video explains the correct oxidation state for...
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Khan Academy: Chemistry: Ideal Gas Equation Example 3
A video lecture giving an example of how to solve for the number of grams of a substance using the ideal gas law. The video shows step-by-step how to solve the problem. [5:46]
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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]
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Khan Academy: Chemistry: Ionic, Covalent, and Metallic Bonds
A video lecture investigating the basics of chemical bonding. The video shows how bonds are formed by giving up or taking an electron, sharing electrons, and between metals. Examples of each type (ionic, metallic, and covalent) are...
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Khan Academy: Chemistry: Ideal Gas Equation Example 2
A video lecture giving examples of how to solve for pressure, temperature, and volume using the ideal gas law. The video shows step-by-step how to solve the problems. [13:01]
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Khan Academy: Chemistry: Ideal Gas Equation Example 4
Need some more examples of how to solve problems using the ideal gas law? Here is a video lecture that does just that! In this video, a problem is worked step-by-step to solve for the molar mass of an unknown molecule at STP. [5:03]
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Khan Academy: Chemistry: Keq Derivation Intuition
A video lecture showing how the equilibrium constant was derived. Follow the derviation using the Haber process as an example. [15:05]
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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...
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Khan Academy: Chemistry: Phase Diagrams
Need help reading those phase diagrams given in chemistry class? This video module provides a good review of how to read the diagrams which show the different states of matter and when they transition to another state according to...
Khan Academy
Khan Academy: Chemistry: Introduction to Stoichiometry
A video lecture giving examples of how to complete stoichiometry problems. The video shows how to calculate the number of grams of each reactant needed to complete the reaction. Also shown is how to determine the limiting reactant in the...
Khan Academy
Khan Academy: Chemistry: Another Mass Composition Problem
A follow-up to a previous module, this module gives a more complicated example of how to compute the empirical formula using mass composition. The video is a step-by-step review of the process of how to use the mass composition to find...
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Khan Academy: Chemistry: Change of State Example
A video lecture solving a specific heat and heat of vaporization problem found in a chemistry textbook. The video shows how to calculate the energy needed to raise the temperature and vaporize the liquid. [7:38]
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Khan Academy: Chemistry: States of Matter Follow Up
Ever wondered how lightning forms or what stars are composed of? These answers can be found in this video lecture about the fourth state of matter, plasma. This video lecture is a follow-up to a states of matter and bonding lectures....
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Khan Academy: Chemistry: Boiling Point Elevation and Freezing Point Depression
A video lecture explaining how adding solute particles to a solution can lower the melting point and raise the boiling point of the solution. The concept is explored with illustrations and a video demonstrations. Also included is an...
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Khan Academy: Chemistry: Le Chatelier's Principle
A video lecture explaining Le Chatelier's Principle. The video shows how a reaction will favor one side of the reaction when stressed. [14:43]
Khan Academy
Khan Academy: Chemistry: Ideal Gas Equation Example 1
A video lecture applying the ideal gas equation to solve for the number of moles contained in a balloon. [10:08]
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Khan Academy: Chemistry: Vapor Pressure
A video lecture explaining that vapor pressure is the pressure exerted by a vapor in equilibrium. Also explained is how kinetic energy relates to temperature and vapor pressure. The video also explores how evaporation plays a role in...
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Khan Academy: Chemistry: Stoichiometry: Limiting Reagent
A video lecture giving an example of how to complete stoichiometry problems to find the limiting reagent. The video shows how to calculate the number of grams of each reactant needed to complete the reaction. Also investigated is how to...
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Khan Academy: Chemistry: Heterogeneous Equilibrium
A video lecture explaining that heterogeneous equilibrium occurs when the chemical reaction contains molecules with different states of matter. Students will learn how set-up finding the equilibrium constant by ignoring the solvent and...