Curated OER
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...
Curated OER
Phase Transition Temperature of Fats
In this chemistry worksheet, students investigate through experimentation the solidifying behavior of some edible fat mixtures by determining their cooling curves. Then they data-log equipment to obtain a large number of temperature...