Khan Academy: 2757 producten
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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Organic chemistry: Nucleophilic acyl substitution
The general mechanism of nucleophilic acyl substitution (and leaving group stability). Organic chemistry Sal and Jay cover topics covered i…
VideoGratis9 minuten
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Chemistry: Solubility and intermolecular forces
Solubility of salt and gas solutes in liquid solvent. Chemistry Did you know that everything is made out of chemicals? Chemistry is the stu…
VideoGratis13 minuten
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Chemistry: 2015 AP Chemistry free response 1b and c
What happens to the cell potential when there is less oxygen in a zinc-air cell. From 2015 AP Chemistry free response 1b and 1c. Chemistry …
VideoGratis7 minuten
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Organic chemistry: Sn2 mechanism: kinetics and substrate
The mechanism, rate law, and stereochemistry of Sn2 reactions. How the sterics of the alkyl halide affect the reaction rate. Organic chemis…
VideoGratis7 minuten
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Organic chemistry: Diels-Alder: endo rule
How to draw the endo product for a Diels-Alder reaction Organic chemistry Sal and Jay cover topics covered in college organic chemistry cou…
VideoGratis10 minuten
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Biology: Cellular respiration introduction
Introduction to cellular respiration, including glycolysis, the Krebs Cycle, and the electron transport chain. Biology Life is beautiful! F…
VideoGratis14 minuten
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Chemistry: Electron configurations for the second period
Writes out quantum numbers for all elements of the second period. Introduces Hund's rule, and connects blocks in periodic table with electr…
VideoGratis12 minuten
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Chemistry: Calculating the equilibrium constant from the standard cell potential
Example problem for calculating the equilibrium constant K using the standard cell potential. Chemistry Did you know that everything is mad…
VideoGratis10 minuten
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Chemistry: More on the dot structure for sulfur dioxide
How to analyze different ways to draw the dot structure for sulfur dioxide Chemistry Did you know that everything is made out of chemicals?…
VideoGratis4 minuten
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Biology: Natural Selection
Hank guides us through the process of natural selection, the key mechanism of evolution. Biology Life is beautiful! From atoms to cells, fr…
VideoGratis12 minuten
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Biology: Evolution: It's a Thing
Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive ge…
VideoGratis11 minuten
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Organic chemistry: Introduction to proton NMR
The basic physical principles underlying proton NMR spectroscopy. Organic chemistry Sal and Jay cover topics covered in college organic che…
VideoGratis10 minuten
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Biology: Enzymes
Enzymes as catalysts for reactions in biological systems; discussion of substrates, active sites, induced fit, and activation energy. Biolo…
VideoGratis8 minuten
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Organic chemistry: Proton NMR practice 1
Practice determining the structure of a molecule from the molecular formula, hydrogen deficiency index, and proton NMR spectrum. Uses examp…
VideoGratis12 minuten
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Organic chemistry: Diamagnetic anisotropy
Explanation of diamagnetic anisotropy. How it affects chemical shift in proton NMR. Organic chemistry Sal and Jay cover topics covered in c…
VideoGratis9 minuten