Khan Academy: Molarity, Molality, Osmolarity, Osmolality, and Tonicity What's the Difference?

Due to the isolation of seamounts, their biodiversity offers a great deal of information on the development of biological and physical processes. Pupils use simple cluster analysis to rate the similarity and differences in biological...

Sometimes learning can be pretty sweet! Get your class involved in the sugar-versus-high-fructose-corn-syrup debate with a video from a playlist on chemical reactions. Viewers see the similarities and differences between the two...

See how each of these terms tells us something different about a solution. [4:04]

See how each of these terms (molarity, molality, osmolarity, osmolality, tonicity) tells us something different about a solution in the Khan Academy video. [4:03]

Why does science need both laws and theories? What is the difference between scientific laws and scientific theories? One explains and one predicts. Discover which is which in this short video.

Did you know that poison and venom are not the same? Both are toxic, but poison must be inhaled, ingested, or absorbed, while venom must be injected into a wound. The narrator explains that some toxic compounds may be used for good, as...

While often used interchangeably, the distinction between accuracy and precision is critical for many scientific endeavors. Discover the importance of consistency for precise results, and the need for accuracy in the field...

This animated essay from "American Experience" explains the difference between alternating and direct electric current and offers in-depth explanations about the role played by a battery, light bulb, wire, and generator. [2:27]

Resource examines how non-glucose molecules such as carbohydrates, proteins, and lipids enter the cellular respiration pathway. Also, looks at the use of cellular respiration intermediates for biosynthesis.

Learn about pulseless electrical activity (PEA) and asystole in the heart.