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: 2015 AP Chemistry free response 5
Kinetics of bleaching food coloring. From 2015 AP Chemistry free response 5. Chemistry Did you know that everything is made out of chemical…
VideoFree10 minutes
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Chemistry: Electron configurations in the 3d orbitals
Reviews electron configuration and orbital notation for K, Ca. Works through electron configuration and orbital notation for Ca 2+ cation a…
VideoFree13 minutes
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Chemistry: Boiling points of organic compounds
How to analyze the different boiling points of organic compounds using intermolecular forces Chemistry Did you know that everything is made…
VideoFree11 minutes
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Chemistry: Comparing Q vs K example
A worked example using reaction quotient Q to predict how concentrations will shift so the reaction can get to equilibrium. Chemistry Did y…
VideoFree6 minutes
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Organic chemistry: Intramolecular aldol condensation
How to determine the product of an intramolecular aldol condensation. Organic chemistry Sal and Jay cover topics covered in college organic…
VideoFree12 minutes
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Organic chemistry: Properties of ethers and crown ethers
Physical properties of ethers. Crown ethers, which are large, ring-shaped molecules with multiple ether groups. Organic chemistry Sal and J…
VideoFree10 minutes
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Organic chemistry: Identifying nucleophilic and electrophilic centers
The definition of nucleophiles and electrophiles. Identifying nucleophilic and electrophilic centers in a molecule. Organic chemistry Sal a…
VideoFree7 minutes
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Cosmology and astronomy: Accreting mass due to gravity simulation
Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-bending vastnes…
VideoFree4 minutes
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Organic chemistry: Markovnikov's rule and carbocations
Markovnikov's Rule and Carbocations. Figuring out which addition reaction is more likely. Organic chemistry Sal and Jay cover topics covere…
VideoFree9 minutes
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Cosmology and astronomy: Hubble's law
Hubble's Law Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-be…
VideoFree11 minutes
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Biology: Taxonomy and the tree of life
The science of taxonomy and where humans fit into the tree of life. Biology Life is beautiful! From atoms to cells, from genes to proteins,…
VideoFree13 minutes
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Organic chemistry: Carbocation stability and rearrangement introduction
Representing carbocations using Lewis structures and model showing the empty p orbital. Hyperconjugation and rearrangements to form more st…
VideoFree10 minutes
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Biology: Ecosystems and ecological networks
Flow of energy and matter through ecosystems. What happens if an ecosystem is disrupted. Video by California Academy of Sciences. Biology L…
VideoFree9 minutes
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Cosmology and astronomy: Quasar correction
Quasar Correction Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the bra…
VideoFree2 minutes
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Biology: Electrochemical gradients and secondary active transport
How a cell can use a molecule's electrochemical gradient to power secondary active transport. Biology Life is beautiful! From atoms to cell…
VideoFree5 minutes