American Chemical Society
Middle School Chemistry: Lesson Plans: Temperature Changes in Dissolving
Media-rich lesson in which students discover that it takes energy to break bonds, and that energy is released when bonds are formed during the process of dissolving. They also determine whether dissolving is either exothermic or...
American Chemical Society
Middle School Chemistry: Lesson Plans: Water Is a Polar Molecule
Students develop their own water molecule model to help them understand the idea that water has a slight positive charge at one end of the molecule and a slight negative charge at the other.
American Chemical Society
Middle School Chemistry: Lesson Plans: Surface Tension
Students observe and investigate why water has a strong surface tension.