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: Elimination vs substitution: tertiary substrate
Determining if a tertiary substrate will undergo E1, E2, or Sn1. Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoFree13 minutes
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Biology: Breaking down photosynthesis stages
Breaking down photosynthesis into light dependent reactions and Calvin cycle. Biology Life is beautiful! From atoms to cells, from genes to…
VideoFree5 minutes
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Health and medicine: Health care costs in US vs Europe
A discussion about US health care costs Health and medicine The medical world can be a confusing place. Patients, their families, and even …
VideoFree15 minutes
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Health and medicine: Autonomic nervous system
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree11 minutes
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Biology: Variation in a species
How variation can be introduced into a species. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to…
VideoFree20 minutes
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Health and medicine: Stages of hypertension
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
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Health and medicine: Inflammatory bowel disease: Diagnosis
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree14 minutes
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Biology: Mitosis: Splitting up is complicated
Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies. Biology Life is …
VideoFree10 minutes
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Cosmology and astronomy: Random predictions for 2060
Sal's random predictions for the year 2060 Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, y…
VideoFree11 minutes
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Chemistry: Specific heat, heat of fusion and vaporization example
Specific heat and phase changes: Calculating how much heat is needed to convert 200 g of ice at -10 degrees C to 110 degree steam. Chemistr…
VideoFree15 minutes
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Chemistry: Counting valence electrons for main group elements
How to determine the number of valence electrons and draw Lewis structures for main group elements starting from the electron configuration…
VideoFree8 minutes
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Biology: Speciation
Learn about speciation, including allopatric and sympatric speciation and mechanisms of reproductive isolation. Biology Life is beautiful! …
VideoFree11 minutes
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Health and medicine: Immune reconstitution inflammatory syndrome (IRIS) in AIDS
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree8 minutes
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Chemistry: Spontaneity and redox reactions
Using standard cell potential to predict whether a redox reaction will be spontaneous under standard conditions. Chemistry Did you know tha…
VideoFree12 minutes
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Chemistry: Worked example: Atomic weight calculation
How to calculate atomic weight from atomic mass and percent abundance of carbon isotopes. Chemistry Did you know that everything is made ou…
VideoFree4 minutes