Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Chemistry: Stoichiometry example problem 1
Figuring out grams of reactants and product produced from reaction of phosphorous and chlorine. Chemistry Did you know that everything is m…
VideoFree14 minutes
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Chemistry: 2015 AP Chemistry free response 3e
Sketching a titration curve based on half-equivalence and equivalence points. From 2015 AP Chemistry free response 3e. Chemistry Did you kn…
VideoFree3 minutes
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Organic chemistry: Carboxylic acid nomenclature and properties
Naming carboxylic acids and analyzing their physical properties. Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoFree9 minutes
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Biology: Gibbs free energy and spontaneous reactions
Gibbs free energy and spontaneous reactions. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ec…
VideoFree9 minutes
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Organic chemistry: Reduction of alkynes
Different methods for reducing alkynes to alkenes or alkynes. Organic chemistry Sal and Jay cover topics covered in college organic chemist…
VideoFree10 minutes
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Chemistry: Ionic bonds and Coulombs law
Introduction to how the strength of ionic bonds is related to Coulomb's law. Example of using Coulomb's law to explain differences in melti…
VideoFree8 minutes
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Biology: Cell signaling in yeast reproduction
Yeast can reproduce sexually through a signaling pathway known as the mating factor pathway. In this process, two haploid yeast cells combi…
VideoFree8 minutes
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Organic chemistry: Nuclear shielding
Nuclear shielding by electrons and how it shifts a proton NMR signal. Organic chemistry Sal and Jay cover topics covered in college organic…
VideoFree10 minutes
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Organic chemistry: Enantiomers and diastereomers
How to tell the difference between enantiomers and diastereomers Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoFree8 minutes
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Biology: Overview of cell signaling
Overview of cell signaling. Autocrine, paracrine and endocrine signaling. Biology Life is beautiful! From atoms to cells, from genes to pro…
VideoFree9 minutes
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Chemistry: Introduction to galvanic/voltaic cells
How to use a redox reaction to construct a galvanic/voltaic cell to produce a flow of current.. Shows the flow of electrons and ions, and e…
VideoFree6 minutes
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Cosmology and astronomy: Radius of observable universe (correction)
(Correction) Radius of Observable Universe Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, y…
VideoFree2 minutes
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Organic chemistry: Electrophilic aromatic substitution
Electrophilic aromatic substitution. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understa…
VideoFree11 minutes
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Organic chemistry: Friedel crafts acylation addendum
Friedel-Crafts acylation addendum. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understand…
VideoFree1 minute
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Organic chemistry: Preparation of mesylates and tosylates
How to convert an alcohol into a mesylate or tosylate, making it a good leaving group. Organic chemistry Sal and Jay cover topics covered i…
VideoFree9 minutes