Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Changing the Freezing Point of Water With Salt
This lesson plan teaches first grade students basic chemistry and physics principles--that saltwater freezes at a lower temperature that plain water.
CK-12 Foundation
Ck 12: Physical Science: Properties of Solutions
[Free Registration/Login may be required to access all resource tools.] How solutes affect solvents, the freezing point depression and boiling point elevation.
Hunkins Experiments
Hunkin's Experiments: How to Make Oxygen From a Battery
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one...