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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Organic chemistry: Aldol reaction
Introduction to the mechanism for the aldol reaction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry cours…
VideoFree12 minutes
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Chemistry: Phase diagrams
Understanding and interpreting phase diagrams Chemistry Did you know that everything is made out of chemicals? Chemistry is the study of ma…
VideoFree13 minutes
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Organic chemistry: R,S (Cahn-Ingold-Prelog) naming system example 2
R,S (Cahn-Ingold-Prelog) Naming System Example 2 Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Ba…
VideoFree11 minutes
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Health and medicine: Ventricular septal defect
An ventricular septal defect is a hole between the two ventricles of the heart. Normally this hole is present at birth but closes within a …
VideoFree6 minutes
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Health and medicine: Other types of dementia
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree5 minutes
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Chemistry: VSEPR for 5 electron clouds (continued)
Part II of using VSEPR for five electron clouds including examples for T-shaped and linear molecules. Chemistry Did you know that everythin…
VideoFree11 minutes
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Organic chemistry: Correction - 2-propylheptane should never be the name!
Correction - 2-Propylheptane should never be the name! Organic chemistry Sal and Jay cover topics covered in college organic chemistry cour…
VideoFree3 minutes
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Biology: Cell theory
Introduction to cell theory. Roles of Hooke, Leeuwenhoek and others in its development. Biology Life is beautiful! From atoms to cells, fro…
VideoFree8 minutes
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Health and medicine: From terpenes to steroids part 2: Squalene, cholesterol, and steroids
After learning about terpenes, lets see how are body uses them to eventually make all the steroid hormones of our body. By Ryan Patton. Hea…
VideoFree4 minutes
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Health and medicine: Total anomalous pulmonary venous return
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree4 minutes
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Biology: Steps of glycolysis
Introduction to glycolysis. Role of glycolysis in producing ATPs and NADHs and converting glucose to pyruvates. Biology Life is beautiful! …
VideoFree12 minutes
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Biology: Facilitated diffusion
Understanding how channel proteins and carrier proteins can facilitate diffusion across a cell membrane (passive transport). Biology Life i…
VideoFree7 minutes
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Cosmology and astronomy: Precession causing perihelion to happen later
Clarifying the effect of axial precession on the calendar and the date of perihelion and aphelion Cosmology and astronomy It's a great, big…
VideoFree12 minutes
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Organic chemistry: Sn1 vs Sn2: Solvent effects
Which types of solvents favor Sn1 and Sn2 reactions. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course…
VideoFree8 minutes
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Biology: ATP: Adenosine triphosphate
Learn more about ATP: how it stores energy, and how that energy is released when it's converted to ADP and phosphate. Biology Life is beaut…
VideoFree6 minutes