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: Defining AIDS and AIDS defining illnesses
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis8 minuten
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Health and medicine: What is pulmonary hypertension?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis4 minuten
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Organic chemistry: Preparation of acid anhydrides
How to prepare acid anhydrides from carboxylic acids. Organic chemistry Sal and Jay cover topics covered in college organic chemistry cours…
VideoGratis7 minuten
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Biology: Ecology introduction
Ecology is the study of how living things interact with each other and their environment. This includes living things (biotic factors) and …
VideoGratis10 minuten
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Organic chemistry: Protection of alcohols
Use of protecting groups to "hide" alcohols while other groups in a molecule react. Organic chemistry Sal and Jay cover topics covered in c…
VideoGratis8 minuten
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High school biology: Cartilage
High school biology The musculoskeletal system Topic: Science Learn about all the sciences, from physics, chemistry and biology, to cosmolo…
VideoGratis4 minuten
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Health and medicine: Osteoarthritis vs rheumatoid arthritis treatments
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis8 minuten
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Chemistry: Common ion effect and buffers
The common ion effect describes the effect on equilibrium that occurs when a common ion (an ion that is already contained in the solution)…
VideoGratis13 minuten
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High school biology: Biogeography: Where life lives
As our planet has coughed up new oceanic islands and ripped its land masses apart, organisms have found themselves stranded in new environm…
VideoGratis2
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Chemistry: Buffer solution pH calculations
Example of calculating the pH of a buffer solution using the Henderson-Hasselbalch equation, including the pH of the buffer solution after …
VideoGratis12 minuten
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Health and medicine: Visual cues
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis8 minuten
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Chemistry: Atomic radius trends on periodic table
How atomic radius is defined, and trends across a period and down a group. Chemistry Did you know that everything is made out of chemicals?…
VideoGratis10 minuten
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Health and medicine: Inflammatory bowel disease: Treatment
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis12 minuten
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Health and medicine: Units for common medical lab values
Figure out how to interpret the units in common medical labs including the CBC, Chem 10, and LFTs. Rishi is a pediatric infectious disease …
VideoGratis11 minuten
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Health and medicine: Lung cancer metastasis
Metastasis is the spread of cancer cells from one area of the body (such as an organ) to another. As cancerous cells multiply, some cells m…
VideoGratis5 minuten