Activity 1.4 - Determining density of plastic materials polyethylene (PE), polypropylene (PP), polystyrene(PS), polyvinyl chloride (PVC) by comparing with water density.
Materials:
Glass beaker of 250 cm3, samples of different plastic materials (PE, PP, PS, PVC)
Suggestions for use:
Students study the plastic objects and formulate hypotheses about their density in comparison with that of water. They write down their hypotheses.