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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Health and medicine: Where do our nails and hair come from?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis9 minuten
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Chemistry: Keq derivation intuition
A more concrete attempt at showing how the probabilities of molecules reacting is related to their concentration. Not necessary to keep pro…
VideoGratis16 minuten
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Organic chemistry: E2 elimination: Stereospecificity
Stereospecificity of E2 elimination reactions. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basi…
VideoGratis12 minuten
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Biology: Second Law of Thermodynamics and entropy
Second Law of Thermodynamics and entropy: the entropy of the universe constantly increases. Biology Life is beautiful! From atoms to cells,…
VideoGratis9 minuten
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Chemistry: Acid-base properties of salts
Examples of different kinds of neutralization reactions, and analyzing the pH of the resulting salt solution. Chemistry Did you know that e…
VideoGratis8 minuten
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Biology: The cytoskeleton
Exploring the cell cytoskeleton, including microfilaments and microtubules (with a brief mention of intermediate filaments). Biology Life i…
VideoGratis7 minuten
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Health and medicine: Neurovascular bundle
The neurovascular bundles located underneath the ribs are small collections of blood vessels (veins and arteries) and nerves which supply t…
VideoGratis6 minuten
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Chemistry: Half-life of a second-order reaction
Deriving half-life equation of a second-order reaction starting from the integrated rate law. Chemistry Did you know that everything is mad…
VideoGratis7 minuten
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Chemistry: Free energy and cell potential
Relationship between Gibbs free energy and standard cell potential. Chemistry Did you know that everything is made out of chemicals? Chemis…
VideoGratis8 minuten
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Cosmology and astronomy: Why S-waves only travel in solids
Why S-Waves Only Travel in Solids Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll lea…
VideoGratis4 minuten
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Health and medicine: Iron deficiency and anemia of chronic disease treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis6 minuten
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Biology: Role of phagocytes in innate or nonspecific immunity
Role of phagocytes in innate or nonspecific immunity. Neutrophils, macrophages, and dendritic cells. MHC II. Biology Life is beautiful! Fro…
VideoGratis16 minuten
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Health and medicine: Polio epidemiology
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis5 minuten
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Cosmology and astronomy: Intro to Moon phases
An introduction to the size of the Moon, the distance to the Moon, the relation of the 28-day cycle of the Moon to a month and understandin…
VideoGratis6
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Cosmology and astronomy: Seismic waves
S-waves and P-waves Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the b…
VideoGratis9 minuten