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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Organic chemistry: Diels-Alder: stereochemistry of diene
How to analyze the stereochemistry of the diene in a Diels-Alder reaction Organic chemistry Sal and Jay cover topics covered in college org…
VideoGratis11 minuten
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Chemistry: 2015 AP Chemistry free response 3d
Calculating the pH at the half-equivalence point for the titration of a weak base with HCl. From 2015 AP Chemistry free response 3d. Chemis…
VideoGratis4 minuten
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Cosmology and astronomy: Plates moving due to convection in mantle
Plates Moving Due to Convection in Mantle Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, yo…
VideoGratis6 minuten
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Biology: Bacteria
Introduction to bacteria. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology i…
VideoGratis18 minuten
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Biology: Chromosomes, chromatids and chromatin
Overview of DNA transcription, translation, and replication during mitosis and meiosis. Learn about chromosomes, chromatids, and chromatin.…
VideoGratis18 minuten
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Chemistry: Le Chatelier's principle: Worked example
A worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. Example includes chan…
VideoGratis8 minuten
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Organic chemistry: Signal characteristics - intensity
How dipole moment determines the intensity of a signal in an IR spectrum. Organic chemistry Sal and Jay cover topics covered in college org…
VideoGratis6 minuten
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Biology: Biodiversity and natural selection
Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. Vi…
VideoGratis9 minuten
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Chemistry: Entropy: Embrace the chaos
Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged i…
VideoGratis13 minuten
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Chemistry: Introduction to redox reactions
Finding the half reactions in a combustion reaction, and identifying what is getting oxidized and reduced. Chemistry Did you know that ever…
VideoGratis11 minuten
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Organic chemistry: Triple bonds cause linear configurations
Linear geometry of a triple bond. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understandi…
VideoGratis1 minuut
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Biology: First living things on land clarification
First living things on land clarification (This video copyrighted under Create Commons Attribution and Share-Alike CC-BY-SA license) Biolog…
VideoGratis6 minuten
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Biology: Animal development: We're just tubes
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Biology Life is beautif…
VideoGratis11 minuten
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Chemistry: Second-order reaction example
Example of using integrated rate law to solve for concentration, and calculating the half life for a second-order reaction. Chemistry Did y…
VideoGratis8 minuten
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Biology: B lymphocytes (B cells)
Overview of B cells (B lymphocytes) and how they are activated and produce antibodies. Biology Life is beautiful! From atoms to cells, from…
VideoGratis14 minuten