Khan Academy
Khan Academy: Weak Base Equilibrium
A video showing you how to calculate the pH of a weak base using Kb and pKb. [11:21]
Khan Academy
Khan Academy: What Is Stress?
Learn about stress in this video. Video discusses what defines stressors and the response to them. [6:05]
Khan Academy
Khan Academy: What Is Normal? Exploring Folkways, Mores, and Taboos
How do psychologist determine what is normal behavior? This video explores how norms are defined. [7:56]
Khan Academy
Khan Academy: Why Distance Is Area Under Velocity Time Line
Understanding why distance is area under velocity-time line. [9:25]
Khan Academy
Khan Academy: Naming and Ordering Numbers Worked Example
Sal Khan works through a question on ordering numbers from the Praxis Core Math test. [3:00]
Khan Academy
Khan Academy: Catalysts
This video [7:30] explains how a catalyst speeds up a chemical reaction by lowering the activation energy.
Khan Academy
Khan Academy: Absolute Temperature and the Kelvin Scale
This video explains the three different temperature scales - Kelvin, Celsius, and Fahrenheit - and how to convert between them.
Khan Academy
Khan Academy: Acid Base Definitions
This video explains the Bronsted-Lowry and Lewis definitions of acids and bases. [7:48]
Khan Academy
Khan Academy: Acid and Base Catalyzed Hydrolysis of Amides
This video explains the mechanisms for acid and base-catalyzed hydrolysis of amides. [11:46]
Khan Academy
Khan Academy: Acid and Base Catalyzed Formation of Hydrates and Hemiacetals
This video demonstrates how the addition of acid or base can catalyze the formation of hydrates and hemiacetals. [10:26]
Khan Academy
Khan Academy: Acetals as Protecting Groups and Thioacetals
This video demonstrates how acetals are used as protecting groups. Thioacetals are similar to acetals, but form from the reaction of an aldehyde with a thiol (not an alcohol). [8:24]
Khan Academy
Khan Academy: Absolute Threshold of Sensation
This video explains our absolute threshold of sensation using examples and graphs. [4:42]
Khan Academy
Khan Academy: Action Potential Patterns
This video explains action potential patterns in neurons. [5:04]
Khan Academy
Khan Academy: A Closer Look at the Stanford Prison Experiment
This video discusses the Stanford Prison Experiment and some of the problems with this experiment that could affect the conclusions. [6:54]
Khan Academy
Khan Academy: Acid Catalyzed Ester Hydrolysis
This video explains the mechanism for the acid-catalyzed hydrolysis of esters (and transesterification). [11:25]
Khan Academy
Khan Academy: Acid Base Properties of Salts
This video shows examples of different kinds of neutralization reactions and analyzes the pH of the resulting salt solution. [7:32]
Khan Academy
Khan Academy: Airbus A380 Take Off Distance
This video solves the problem of how long of a runway an A380 needs. [5:29]
Khan Academy
Khan Academy: Aggression
This video discusses the three things that influence aggression: biology, psychology, social-cultural factors. [7:56]
Khan Academy
Khan Academy: Agents of Socialization
This video describes four agents of socialization: family, schools, peers, and mass media. [4:43]
Khan Academy
Khan Academy: Addition of Carbon Nucleophiles to Aldehydes and Ketones
This video demonstrates how carbon-containing nucleophiles attack aldehydes and ketones to form alcohols. [9:33]
Khan Academy
Khan Academy: Additional Evidence Humanities Passage Music
Watch a demonstration of one way to approach an 'additional evidence' question for a humanities passage in the reading comprehension section of the LSAT. [4:03]
Khan Academy
Khan Academy: Adaptive Value of Behavioral Traits
Observable behavior can be broken down into three psychological categories: innate behavior, learned behavior, and complex behavior. This video offers an in-depth explanation of each category with examples. [12:50]
Khan Academy
Khan Academy: Alcohol Nomenclature
This video looks at the classification and nomenclature of alcohols. [12:06]
Khan Academy
Khan Academy: A Look at a Seductive but Wrong Gibbs Spontaneity Proof
This video looks at why the 'proof' of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks. [6:40]