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.

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.

Explore the water molecule, and understand how it is a polar molecule.

Lesson plan in which young scholars design an experiment to determine if different types of liquids affect the amount of dissolution of an M&M candy shell.

Explore the chemical properties involved in surface tension.

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...