CK-12 Foundation
Ck 12: Osmosis
[Free Registration/Login may be required to access all resource tools.] Tutorial defines osmosis and the difference between osmosis and diffusion. Students will learn how to distinguish solute from solvent and solution and the hypotonic,...
CK-12 Foundation
Ck 12: Colloids and Suspensions
[Free Registration/Login may be required to access all resource tools.] In this lesson, students expand their study of mixtures to show that solids and gases can also act as solvents. Additionally, they take a look at situations in which...
American Chemical Society
Middle School Chemistry: Lesson Plans: Why Does Water Dissolve Salt?
Students use their own model of a salt crystal and water molecule to show how water dissolves salt. Then, they relate their observations to the structure of salt, water, and alcohol on the molecular level.
Khan Academy
Khan Academy: Molarity vs. Molality
Learn how molarity and molality differ. The molality of a solution is equal to the moles of solute divided by the mass of solvent in kilograms, while the molarity of a solution is equal to the moles of solute divided by the volume of...
Estrella Mountain Community College
Online Biology Book: Chemistry Ii: Water and Organic Molecules
Online biology textbook discussing the chemical nature of water, and the importance of its molecular structure to life. Also discusses at length the organic molecules nucleic acids, proteins, lipids, and carbohydrates.
Other
Reverse Osmosis and Osmotic Pressure What They Are
This site gives a good explanation of osmosis and reverse osmosis. Also includes a scientific diagram of the process.
Other
Fundamentals of Reverse Osmosis
This site provides a basic definition of reverse osmosis, with a bit of a slant on why water pretreatment is important.
Curated OER
Reverse Osmosis and Osmotic Pressure What They Are
This site gives a good explanation of osmosis and reverse osmosis. Also includes a scientific diagram of the process.