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: Healing after a heart attack (myocardial infarction)
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: Groups of the periodic table
What is a group in the periodic table, and what do elements in a group have in common? Chemistry Did you know that everything is made out o…
VideoFree8 minutes
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Biology: Ecological succession: Change is good
Hank examines how ecological communities change after a disturbance. Biology Life is beautiful! From atoms to cells, from genes to proteins…
VideoFree9 minutes
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Organic chemistry: Reactivity of carboxylic acid derivatives
How to analyze the reactivity of the carboxylic acid derivatives using induction and resonance effects. Organic chemistry Sal and Jay cover…
VideoFree9 minutes
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Health and medicine: Acute complications of diabetes - Hyperosmolar hyperglycemic nonketotic state
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree10 minutes
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Health and medicine: Action potential patterns
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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Health and medicine: Overview of Sensation and Meissner's Corpuscle
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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Organic chemistry: Hydroboration-oxidation of alkynes
Two-step reaction in which an alkene is converted to an alkene with a hydroxyl substituent (which may tauromerize to a carbonyl). Organic c…
VideoFree9 minutes
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Health and medicine: Intro to neurodevelopment milestones
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree10 minutes
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Organic chemistry: Resonance structures
Introduction to resonance structures, when they are used, and how they are drawn. Organic chemistry Sal and Jay cover topics covered in col…
VideoFree9 minutes
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Chemistry: Common polyatomic ions
Reviewing the common polyatomic ions, and explaining common suffixes and prefixes to help remember the formulas. Chemistry Did you know tha…
VideoFree6 minutes
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Chemistry: Atomic weight and atomic mass
Atomic mass is the total mass of protons and neutrons in an individual atom or isotope. Atomic weight is the average mass of all of the nat…
VideoFree9 minutes
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Organic chemistry: Preparation of alkynes
Note that if a terminal alkyne is produced, the strong base will deprotonate the alkyne to form an alkynide anion. A proton source (like H2…
VideoFree7 minutes
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Health and medicine: Fetal hemoglobin and hematocrit
Although mom controls the oxygen source, the fetus has a couple of clever tricks to get the most oxygen possible! Rishi is a pediatric infe…
VideoFree15 minutes
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Organic chemistry: Signal characteristics - shape
How hydrogen bonding affects the shape of an IR signal (causing it to become broader and less sharp). Organic chemistry Sal and Jay cover t…
VideoFree9 minutes