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 …
check_box_outline_blank
Health and medicine: Lung cancer staging
Health professionals use special terminology referred to as stages to concisely communicate the progression of cancer disease. Learn how ca…
VideoGratis6 minuten
check_box_outline_blank
Biology: Functional groups
Hydroxyl, sulfhydryl, carbonyl, carboxyl, amino and phosphate groups. Alcohols and thiols. Biology Life is beautiful! From atoms to cells, …
VideoGratis10 minuten
check_box_outline_blank
Health and medicine: Membrane potentials - part 1
Find out how a cell that is permeable to one ion can become charged (either positive or negative) if there is permeability and a concentrat…
VideoGratis8 minuten
check_box_outline_blank
Health and medicine: Why do some people but not others develop substance use problems?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoGratis4 minuten
check_box_outline_blank
Health and medicine: Hyperplasia in colon tissue
Dr. Andy Connolly from Stanford Medical School shows Sal what hyperplasia in colon tissue looks like Health and medicine The medical world …
VideoGratis5 minuten
check_box_outline_blank
Chemistry: Nickel-cadmium battery
Balancing the redox reaction (in base) that occurs in a nickel-cadmium battery. Chemistry Did you know that everything is made out of chemi…
VideoGratis11 minuten
check_box_outline_blank
Health and medicine: Teeth
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis8 minuten
check_box_outline_blank
Health and medicine: Alveolar gas equation - part 2
Find out how to calculate exactly how much oxygen is deep down inside your lungs! Rishi is a pediatric infectious disease physician and wor…
VideoGratis7 minuten
check_box_outline_blank
Chemistry: Titration introduction
Introduction to acid-base titrations using example of titrating 20.0 mL of HCl of unknown concentration with 0.100 M NaOH. Covers indicator…
VideoGratis9 minuten
check_box_outline_blank
Organic chemistry: Newman projection practice 1
How to use Newman projections to determine the most and least stable conformations of a compound Organic chemistry Sal and Jay cover topics…
VideoGratis14 minuten
check_box_outline_blank
Chemistry: Balancing chemical equation with substitution
Using the substitution method to balance a reaction where a reactant and product have a polyatomic ion in common. Chemistry Did you know th…
VideoGratis4 minuten
check_box_outline_blank
Health and medicine: Control of the GI tract
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis10 minuten
check_box_outline_blank
Organic chemistry: Mixed (crossed) aldol condensation
How to find the product of a mixed (crossed) aldol condensation. Organic chemistry Sal and Jay cover topics covered in college organic chem…
VideoGratis9 minuten
check_box_outline_blank
Chemistry: Weak base equilibrium
Quick overview of Kb and pKb. Examples of calculating the pH of a weak base solution. Chemistry Did you know that everything is made out of…
VideoGratis11 minuten
check_box_outline_blank
Chemistry: Covalent networks, metallic crystals, and ionic crystals
Covalent networks, metallic crystals, and ionic crystals: Some of the strongest molecular structures. Chemistry Did you know that everythin…
VideoGratis9 minuten