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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Biology: Community ecology: Feel the love
Hank explores community ecology, the competitive exclusion principle, and how different species can coexist by occupying different niches. …
VideoGratis11 minuten
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Chemistry: Weak acid equilibrium
Quick overview of Ka and pKa. Example of calculating the pH of a weak acid solution. Chemistry Did you know that everything is made out of …
VideoGratis10 minuten
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Organic chemistry: Newman projections
Newman Projections Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic hig…
VideoGratis14 minuten
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Organic chemistry: Ortho-para directors I
Regiochemistry. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic high s…
VideoGratis13 minuten
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Organic chemistry: Stability of cycloalkanes
How to analyze the stability of cyclopropane, cyclobutane, cyclopentane, and cyclohexane Organic chemistry Sal and Jay cover topics covered…
VideoGratis8 minuten
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Cosmology and astronomy: Supernova (supernovae)
Supernova (Supernovae) Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about th…
VideoGratis12 minuten
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Organic chemistry: Using a pKa table
How to use a pKa table to determine relative acid strengths Organic chemistry Sal and Jay cover topics covered in college organic chemistry…
VideoGratis9 minuten
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Chemistry: Finding formula for ionic compounds
Finding formula from name of ionic compound, using example of calcium bromide. Chemistry Did you know that everything is made out of chemic…
VideoGratis3 minuten
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Biology: Introduction to evolution and natural selection
Introduction to how groups of organisms evolve and how natural selection can lead to evolution. Biology Life is beautiful! From atoms to ce…
VideoGratis18 minuten
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Biology: Great glands - Your endocrine system
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the blo…
VideoGratis11 minuten
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Organic chemistry: E2 elimination: Stereoselectivity
Stereoselectivity of E2 elimination reactions. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basi…
VideoGratis11 minuten
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High school biology: Introduction to lipids
Introduction to lipids like fats and phospholipids High school biology Biological macromolecules There's an old saying, "You are what you e…
VideoGratis6
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Organic chemistry: Meso compounds
How to identify meso compounds Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding …
VideoGratis10 minuten
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Chemistry: More on orbitals and electron configuration
How electron configuration is related to orbitals and the structure of the periodic table. Chemistry Did you know that everything is made o…
VideoGratis15 minuten
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Biology: Earth formation
Earth was formed approximately 4.6 billion years ago, likely as the result of a supernova (star explosion). The debris from this explosion…
VideoGratis10 minuten