Observing 41 Convervation of Matter 1. Subtraction-determining if there are mass differences before and after the reaction. Students make a polymer from Elmer's glue and Boraxo, find densities of all. Students compare bounce heights for ploymer balls. Graphing 43 Concentrations and Dilutions of Liquids 1.
Students make a straw pipette.
Students serially dilute food color until they can't see it anymore. Measuring volume 1. Students make concentrations of salt water. Students find the concentration of salt in an unknown solution. Measuring volume 2.