Khan Academy: Test Prep: Mcat: Physical Processes: Sound Is a Longitudinal Wave

Explains what chromatography is and how its principles are applied when separating mixtures.

Explains the concept of chirality and how it is applied in the development of pharmaceuticals.

Discusses electric forces, electric fields, electric potential, and the role that electric potential plays in enabling materials to pass through a cell membrane.

Explains what the Uncertainty Principle developed by Werner Heisenberg is and its applications in electron movement and in quantum mechanics. [9:38]

Explains what intramolecular and intermolecular forces are and the different types for each. Includes lots of examples.

Explains how we measure the mass of an atom. [8:33]

Enzymes create the conditions needed for biochemical reactions to happen fast. The general name that chemists use for a chemical entity that increases the speed of a reaction is a "catalyst." Enzymes are biological catalysts - they...

This physics tutorial invites users to discover that sound is a mechanical wave. Be sure click on the animation for further study.

This physics tutorial invites users to discover how sound is a pressure wave. Be sure to view the animation.

In this video, you'll learn about the general structure of amino acids, which include an amine group, a carboxylic acid group, and a unique side chain (R-group) attached to the alpha carbon. In addition, we'll explore where amino acids...