Skewering Balloons: Organic Polymers
Students view a demonstration that illustrates the properties of rubber or latex when polymer molecules stretch around a point. They observe as the teacher skewers a loosely inflated balloon through the nipple end and out through the tie end.
9th - 12th Science 3 Views 0 Downloads
Simple Tensile Testing of Polymeric Films and Sheeting
Chemistry classes pretend to be consultants to a grocery story trying to decide what polymer to use for therir new non-paper bags. They prepare tensile bars and use them to test plastic film samples for strength and stretchability. Both...
9th - Higher Ed Science
Investigation of Crystallinity in Polymeric Materials
A kaleidoscope is constructed using polarizing polymer paper and then low-density polyethylene, high-density polyethylene, and polypropylene are all melted onto individual glass slides and examined through a microscope. The intent is to...
11th - Higher Ed Science
Real-World Projects: Challenges from the Polymer Industry
Two scenarios are presented for chemistry detectives to decipher. Both require the use of an infrared spectrometer and focus on the examination of polymer materials. In the first, lumps in polyethylene bottles are analyzed. In the...
9th - 12th Science