US Geological Survey
U.s. Geological Survey: Saline Water
Information about saline water use in the United States.
American Chemical Society
Middle School Chemistry: Does Temperature Affect Dissolving?
Investigate the difference between the solubility of salt and sugar in hot and cold water.
TOPS Learning Systems
Tops Learning Systems: Top Science: In Between [Pdf]
Investigate why mixing salt with rice, or salt with water, causes the overall volume to decrease.
Texas Instruments
Texas Instruments: Designing Hot and Cold Packs
in this activity, students calculate the molar enthalpy of dissolving for three ionic solids, and use this information to design a cold pack. In this experiment they measure the heat changes which occur from various salts dissolving in...
Science Buddies
Science Buddies: Saturated Solutions: Measuring Solubility
Many essential chemical reactions and natural biochemical processes occur in liquid solutions, so understanding the chemical properties of liquid solutions is fundamentally important. This project will challenge you to discover how much...
Science Buddies
Science Buddies: What's the Point of Boiling?
You know that water can exist in three separate phases: solid (ice), liquid (water), and vapor (steam). To change from one phase to another, you simply add (or remove) heat. When water boils, what happens to molecules (for example sugar...
CK-12 Foundation
Ck 12: Plix: Solute and Solvent
[Free Registration/Login Required] While paying attention to the charges, move the salt ions and water molecules around to simulate how salt ions are dissolved in water.
PBS
Pbs Teachers: Rising Ice Experiment
Observe how ice and salt crystals interact by using salt to help adhere a string to the top of an ice cube in a glass of water, then lift the cube out of the water.
PBS
Pbs Teachers: Water Density
Demonstrate the effect that dissolving different amounts of salt in water has on the density of the liquid.