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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Cosmology and astronomy: Scale of earth and sun
Scale of Earth and Sun Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about th…
VideoGratis10 minuten
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Biology: Species
What a species is and isn't. Ligers, tiglons, mule, hinnies, and dogs. Biology Life is beautiful! From atoms to cells, from genes to protei…
VideoGratis9 minuten
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Organic chemistry: Elimination vs substitution: primary substrate
Figuring out if a primary substrate will undergo substitution or elimination. Organic chemistry Sal and Jay cover topics covered in college…
VideoGratis7 minuten
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Chemistry: Redox titration
A redox titration example: titrating an Fe(II) solution with potassium permanganate. Chemistry Did you know that everything is made out of …
VideoGratis8 minuten
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Chemistry: Plotting data for a second-order reaction
Example of graphing second order rate data to see a linear relationship, and calculating rate constant k from the slope. Chemistry Did you …
VideoGratis8 minuten
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Organic chemistry: Conformational analysis of propane
How to analyze the staggered and eclipsed conformations of propane Organic chemistry Sal and Jay cover topics covered in college organic ch…
VideoGratis8 minuten
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Chemistry: Electron affinity: period trend
Electron affinity is the change in energy when a neutral atom in its gaseous form gains an electron to form a negative ion. For example, wh…
VideoGratis13 minuten
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Organic chemistry: Hydration of alkynes
Reaction between a terminal alkyne, a strong acid, and mercury (II) sulfate. Using Mark's rule to determine the regiochemistry of addition,…
VideoGratis8 minuten
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Organic chemistry: Sn1 mechanism: carbocation rearrangement
Examples of Sn1 reactions involving carbocation rearrangements. Organic chemistry Sal and Jay cover topics covered in college organic chemi…
VideoGratis8 minuten
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Organic chemistry: More functional groups
An overview of the carbonyl-containing functional groups Organic chemistry Sal and Jay cover topics covered in college organic chemistry co…
VideoGratis9 minuten
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Organic chemistry: Formation of nitrate esters
Formation of a nitrate ester from reaction of an alcohol with nitric acid. Organic chemistry Sal and Jay cover topics covered in college or…
VideoGratis6 minuten
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Organic chemistry: Formal charge on oxygen
How to calculate the formal charge on oxygen Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic …
VideoGratis10 minuten
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Biology: The carbon cycle
Overview of how carbon is recycled through our biosphere in the carbon cycle. Biology Life is beautiful! From atoms to cells, from genes to…
VideoGratis9 minuten
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Biology: Eutrophication and dead zones
How eutrophication, caused by extra nutrients in runoff, can lead to dead zones. Biology Life is beautiful! From atoms to cells, from genes…
VideoGratis7 minuten
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Organic chemistry: Synthesis of alcohols using Grignard reagents II
Working backwards from a particular alcohol and determining what Grignard reagent you would need to synthesize it. Organic chemistry Sal an…
VideoGratis12 minuten