Khan Academy: 2757 products
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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Chemistry: Titration of a strong acid with a strong base (continued)
Calculating the pH at and after the equivalence point for titration of strong acid, hydrochloric acid, with strong base, NaOH. Chemistry Di…
VideoFree10 minutes
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Chemistry: Electronegativity and bonding
Electronegativity differences in bonding using the Pauling scale. Classifying bonds as covalent, polar covalent, or ionic. Chemistry Did yo…
VideoFree12 minutes
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Physics: Electrolyte (temperature test)
Here we experiment with hot vs. cold vinegar as our electrolyte. Does the deflection in our galvanometer depend on temperature? Why? Physic…
VideoFree2 minutes
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Organic chemistry: Electrophilic aromatic substitution mechanism
The general reaction and mechanism of electrophilic aromatic substitution. Organic chemistry Sal and Jay cover topics covered in college or…
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: Surface Tension and Adhesion (Hindi)
Ram explains the concepts of surface tension, cohesion, and adhesion. Class 11 Physics (India) - Hindi To help students who prefer to learn…
VideoFree7
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Class 12 Physics (India): Deriving prism formula
What makes the 22 degrees halo, 22 degrees? Let's derive an expression for the angle of minimum deviation. Class 12 Physics (India) It is n…
VideoFree15
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Organic chemistry: Drawing chair conformations
How to draw both chair conformations of cyclohexane Organic chemistry Sal and Jay cover topics covered in college organic chemistry course.…
VideoFree11 minutes
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Class 12 Physics (India): Polarization of light, linear and circular
This is the underlying physics behind 3D glasses Class 12 Physics (India) It is now time to dive deeper into the world of physics with topi…
VideoFree15 minutes
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Physics: Battery meter (galvanometer)
Simple device which we can use to measure our homemade batteries. You can test it with any household battery first. What does this deflecti…
VideoFree1 minute
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Organic chemistry: Preparation of acyl (acid) chlorides
How to prepare acyl (acid) chlorides using thionyl chloride. Organic chemistry Sal and Jay cover topics covered in college organic chemistr…
VideoFree10 minutes
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Organic chemistry: Common mistakes when drawing resonance structures
How to avoid common mistakes when drawing resonance structures Organic chemistry Sal and Jay cover topics covered in college organic chemis…
VideoFree8 minutes
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Class 12 Physics (India): Proof: Field from infinite plate (part 2)
We see that the infinite, uniformly charged plate generates a constant electric field (independent of the height above the plate) Class 12 …
VideoFree11 minutes
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Class 12 Physics (India): Cartesian sign conventions mirrors
Let's explore how we can generalize the mirror formula by introducing cartesian sign conventions. Class 12 Physics (India) It is now time t…
VideoFree9
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Class 11 Physics (India) - Hindi: Why do sounds get softer? (Hindi)
Let's think about why sounds would have to get softer as you get further from the source. Class 11 Physics (India) - Hindi To help students…
VideoFree11
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Physics: Magnetic permeability
What happens to the magnetic field of a magnet in the presence of a another material which is attracted to it. Why does this happen? Physic…
VideoFree2 minutes