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: Naming alkanes with alkyl groups
Naming linear alkanes with branching starting from the structure, and drawing the structures based on the name. Organic chemistry Sal and J…
VideoGratis11 minuten
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Health and medicine: Uterine inversion
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis7 minuten
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Biology: Animal behavior
Hank and his cat Cameo help teach us about animal behavior and how we can discover why animals do the things they do. Biology Life is beaut…
VideoGratis10 minuten
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Biology: Overview of animal and plant cells
Overview of animal and plant cells. Topics include cell walls, vacuoles, chloroplasts, peroxisomes, lysosomes, mitochondria, etc. Biology L…
VideoGratis9 minuten
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Biology: Professional antigen presenting cells (APC) and MHC II complexes
Professional antigen presenting cells (APCs) are immune cells that specialize in presenting an antigen to a T-cell. The main types of profe…
VideoGratis12 minuten
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Biology: Scale of cells
Thinking about how large a cell is compared to viruses, proteins and simple molecules. Biology Life is beautiful! From atoms to cells, from…
VideoGratis7 minuten
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High school biology: Ligaments, tendons, and joints
High school biology The musculoskeletal system Topic: Science Learn about all the sciences, from physics, chemistry and biology, to cosmolo…
VideoGratis3 minuten
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Chemistry: Complete ionic and net ionic equations
The difference between molecular equations, complete ionic equations and net ionic equations. How to identify spectator ions. Chemistry Did…
VideoGratis6
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Cosmology and astronomy: Plate tectonics: Difference between crust and lithosphere
Plate Tectonics Introduction and Difference between crust and lithosphere Cosmology and astronomy It's a great, big universe out there. In …
VideoGratis8 minuten
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Organic chemistry: Keto-enol tautomerization (by Jay)
Mechanisms for acid and base catalyzed keto-enol tautomerization. Organic chemistry Sal and Jay cover topics covered in college organic che…
VideoGratis11 minuten
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Biology: Circulatory & respiratory systems
Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxid…
VideoGratis11 minuten
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Organic chemistry: Organic chemistry naming examples 2
Organic chemistry naming examples involving branching and rings. Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoGratis10 minuten
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Organic chemistry: Absorption in the visible region
Physical basis of our perception of color. Example of beta-carotene, the molecule that makes carrots orange. Organic chemistry Sal and Jay …
VideoGratis5 minuten
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Chemistry: Chilling water problem
How much ice at -10 degrees C is necessary to get 500 g of water down to 0 degrees C? Chemistry Did you know that everything is made out of…
VideoGratis11 minuten
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Chemistry: Empirical, molecular, and structural formulas
Examples to demonstrate the difference between empirical, structural, and molecular formulas Chemistry Did you know that everything is made…
VideoGratis7 minuten