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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High school biology: Intro to the endocrine system
Basic overview of hormones and the endocrine system High school biology The nervous and endocrine systems Topic: Science Learn about all th…
VideoGratis10 minuten
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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…
VideoGratis9 minuten
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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…
VideoGratis15 minuten
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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…
VideoGratis7 minuten
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Biology: Ecology - Rules for living on earth
Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks …
VideoGratis10 minuten
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Health and medicine: Hypovolemic shock
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis10 minuten
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Organic chemistry: Epoxide formation and anti dihydroxylation
Adding two hydroxyls to opposite faces of an alkene double bond via an epoxide intermediate. Organic chemistry Sal and Jay cover topics cov…
VideoGratis12 minuten
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Health and medicine: Dilated cardiomyopathy: Pathophysiology and diagnosis
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis10 minuten
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Health and medicine: Cardiogenic shock
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis11 minuten
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Biology: Fungi: Death Becomes Them
Death is what fungi are all about. By feasting on the deceased remains of almost all organisms on the planet, converting the organic matter…
VideoGratis11 minuten
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Biology: Diffusion and osmosis
Learn about diffusion, osmosis, and concentration gradients and why these are important to cells. Biology Life is beautiful! From atoms to …
VideoGratis19 minuten
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Organic chemistry: Birch reduction II
The effect of electron-withdrawing and electron-donating groups. Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoGratis12 minuten
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Chemistry: Suspensions, colloids and solutions
A suspension is a heterogenous mixture containing large particles that will settle on standing. Sand in water is an example of a suspension…
VideoGratis14 minuten
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Biology: Zygote differentiating into somatic and germ cells
Learn how a zygote, the single cell produced by fertilization, divides by mitosis to produce all the tissues of the human body (including g…
VideoGratis10 minuten
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Chemistry: Mechanisms and the rate-determining step
An introduction to mechanisms and the rate determining step. Example of finding rate law of multistep reaction with initial slow step. Chem…
VideoGratis9 minuten