CK-12 Foundation
Ck 12: Chemistry for High School
This digital textbook covers core chemistry concepts and includes interactive features, real-world examples, and videos.
Science Education Resource Center at Carleton College
Serc: Mn Step: Stoichiometry: Introduction to Stoichiometry
Using the example of a cake recipe, students find the ratios between different ingredients, which introduces the concept of mole ratios. They then calculate the mole ratios in a chemical equation, and learn how this applies to...
Frostburg State University
Frostburg State University: Experimental Yield
Part of a slide show from Frostburg State University showing the concept of experimental yield. Gives reasons for two yields.
Khan Academy
Khan Academy: Molarity vs.osmolarity
Molarity and osmolarity are two distinct concepts. Molarity (M) is the number of moles of solute per liter of solution. The unit of molarity is the mole (mol). Osmolarity (Osm/L) is the total concentration of all solutes in the solution....