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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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…
VideoFree9 minutes
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Organic chemistry: Comparing formal charges to oxidation states
How formal charges and oxidation states are both ways of counting electrons Organic chemistry Sal and Jay cover topics covered in college o…
VideoFree6 minutes
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Health and medicine: Heart failure diagnosis
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: Cystic fibrosis diagnosis
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree5 minutes
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Organic chemistry: Identifying chirality centers
How to determine which atoms in a molecule are chirality centers. Organic chemistry Sal and Jay cover topics covered in college organic che…
VideoFree8 minutes
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Health and medicine: Skeletal endocrine control
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
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Chemistry: Enthalpy
Understanding why enthalpy can be viewed as "heat content" in a constant pressure system. Chemistry Did you know that everything is made ou…
VideoFree15 minutes
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Organic chemistry: Conformational analysis of ethane
How to analyze the staggered and eclipsed conformations of ethane Organic chemistry Sal and Jay cover topics covered in college organic che…
VideoFree6 minutes
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Health and medicine: Changing the heart rate - chronotropic effect
Find out exactly how your autonomic nervous system has a chronotropic effect (i.e. timing) that changes speed of your heartbeat! Rishi is a…
VideoFree12 minutes
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Chemistry: Finding units of rate constant k
How to find the units for the rate constant k for a zero, first, or second order reaction. Chemistry Did you know that everything is made o…
VideoFree5 minutes
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Organic chemistry: Formal charge on nitrogen
How to calculate the formal charge on nitrogen Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basi…
VideoFree9 minutes
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Cosmology and astronomy: Seasons aren't dictated by closeness to sun
Why our closeness to the sun does not dictate the seasons Cosmology and astronomy It's a great, big universe out there. In this section of …
VideoFree5 minutes
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Health and medicine: Hypertension and blood vessel damage
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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Organic chemistry: Aromatic stability IV
Aromaticity of the cyclopentadienyl anion and cycloheptatrienyl cation. Organic chemistry Sal and Jay cover topics covered in college organ…
VideoFree11 minutes
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Cosmology and astronomy: Supernova clarification
Supernova clarification Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about t…
VideoFree2 minutes