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 …
check_box_outline_blank
Biology: Biological molecules - You are what you eat
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environm…
VideoFree14 minutes
check_box_outline_blank
Cosmology and astronomy: Radius of observable universe
Radius of Observable Universe Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn a…
VideoFree17 minutes
check_box_outline_blank
Cosmology and astronomy: Detectable civilizations in our galaxy 3
Reconciling with the traditional Drake Equation Cosmology and astronomy It's a great, big universe out there. In this section of Khan Acade…
VideoFree7 minutes
check_box_outline_blank
Biology: Biogeochemical cycles overview
Introduction to how water, carbon, nitrogen, and phosphorus are cycled through ecosystems. Biology Life is beautiful! From atoms to cells, …
VideoFree8 minutes
check_box_outline_blank
Organic chemistry: Ether naming and introduction
Ether naming and introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding …
VideoFree11 minutes
check_box_outline_blank
Chemistry: Introduction to kinetics
Kinetics is the study of reaction rates and how they are affected. Many factors, such as concentration, pressure, temperature, and enzyme a…
VideoFree15 minutes
check_box_outline_blank
Chemistry: Relationship between Ka and Kb
The relationship between Ka and Kb, and pKa and pKb. Examples of finding Ka of a weak acid given Kb of the conjugate base. Chemistry Did yo…
VideoFree11 minutes
check_box_outline_blank
Biology: Comparative anatomy: What makes us animals
Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolut…
VideoFree8 minutes
check_box_outline_blank
Biology: The skeletal system: It's ALIVE!
Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts…
VideoFree13 minutes
check_box_outline_blank
Organic chemistry: Preparation of esters via Fischer esterification
How to draw the mechanism for a Fischer esterification. Organic chemistry Sal and Jay cover topics covered in college organic chemistry cou…
VideoFree10 minutes
check_box_outline_blank
Biology: Sodium potassium pump
How the the sodium-potassium (Na+/K+) pump works. Its role in establishing resting membrane potentials. Biology Life is beautiful! From ato…
VideoFree7 minutes
check_box_outline_blank
Chemistry: Buffer capacity
The definition of buffer capacity, and an example showing why it depends on the absolute concentrations of the conjugate acid and base. Che…
VideoFree11 minutes
check_box_outline_blank
Organic chemistry: Free radical reactions
Free radical reactions Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic…
VideoFree14 minutes
check_box_outline_blank
High school biology: Fossils: Rocking the Earth
Use fossils, like clues buried inside of rocks, to unlock the history of life on our planet. Play the Evolution Lab: http://www.pbs.org/nov…
VideoFree2
check_box_outline_blank
Organic chemistry: Fischer esterification
Fischer esterification of carboxylic acids. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic u…
VideoFree17 minutes