Seventh grade scientists weigh in on the concept of density. In a nutshell, they participate in the following activities: Measurement of the mass and volume of fruit in order to compare densities Measurement of the mass of oil and water...

See how gas, liquid, and solid molecules react to external pressure in this simulation. Also see a model of intermolecular motion through elliptical particles.

In this activity, students construct models of molecules using marshmallows and gum drops.

Help the Phantom choose a material and observe the changes at different temperatures in the molecule chamber. What happens to the elements or molecules as the temperature changes?