Mass and density — aren't they the same thing? This activity has groups use balance beams and water displacement to measure several objects. The pupils use the measurements to calculate the density of the objects. 

Groups suspend objects within layers of liquids to determine the densities of different liquids and compare them to the densities of objects calculated in Part 1. The groups then carefully test their calculations by layering the...

This colorful demonstration illustrates the rule, "likes dissolve likes," by combining three, immiscible liquids to create a density column." Teacher notes provide background information.

Concluding a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate densities of several household liquids and compare them to the densities of irregularly shaped objects (as...

By making oil float on water--with the help of other ingredients--students can create a lava-lite effect.

An investigation into what properties liquids have that enable them to sit in separate layers in a container.