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: Condensed structures
How to go from Lewis dot structures to partially condensed structures to condensed structures Organic chemistry Sal and Jay cover topics co…
VideoGratis7 minuten
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Organic chemistry: R,S system practice
How to assign a configuration to a chirality center using the R,S system Organic chemistry Sal and Jay cover topics covered in college orga…
VideoGratis9 minuten
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Chemistry: 2015 AP Chemistry free response 5a: Finding order of reaction
Finding the order of reaction based on graphs of absorbance, ln(absorbance) and 1/(absorbance) vs. time for kinetics of bleaching food colo…
VideoGratis7 minuten
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Chemistry: Paramagnetism and diamagnetism
Chemistry Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactiv…
VideoGratis8 minuten
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Chemistry: First Law of Thermodynamics introduction
Energy cannot be created or destroyed. It can only be transferred or converted from one form to another. Chemistry Did you know that everyt…
VideoGratis9 minuten
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Chemistry: Galvanic cells and changes in free energy
Relationship between Gibbs free energy, reaction quotient Q, and cell voltage. Chemistry Did you know that everything is made out of chemic…
VideoGratis13 minuten
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Organic chemistry: Elimination vs substitution: reagent
How to figure out if a reagent will act as a strong or weak base or a nucleophile in a reaction. Organic chemistry Sal and Jay cover topics…
VideoGratis8 minuten
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Cosmology and astronomy: Collective learning
How symbolic language drives collective learning and how this is one of the truly differentiating aspects of human beings relative to the r…
VideoGratis13 minuten
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Biology: Cancer
An introduction to what cancer is and how it is the by-product of broken DNA replication. Biology Life is beautiful! From atoms to cells, f…
VideoGratis13 minuten
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Organic chemistry: Monosubstituted cyclohexane
How to draw and analyze the two chair conformations for a monosubstituted cyclohexane Organic chemistry Sal and Jay cover topics covered in…
VideoGratis8 minuten
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Health and medicine: What is laryngitis ?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis7 minuten
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Biology: DNA
Learn about DNA (deoxyribonucleic acid). Overview of DNA bases, complementary base pairing, and the structure of the double helix. Biology …
VideoGratis13 minuten
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Chemistry: Stoichiometry
Stoichiometry expresses the quantitative relationship between reactants and products in a chemical equation. Stoichiometric coefficients in…
VideoGratis10 minuten
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Health and medicine: Cellular structure of bone
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoGratis7 minuten
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Chemistry: Dipole moment
Predicting the molecular dipole moment based on the molecular geometry. Chemistry Did you know that everything is made out of chemicals? Ch…
VideoGratis9 minuten