Aldon^® Innovating Science™ STEM Investigations: Make Your Own Liquid Crystal Thermometer

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Aldon Innovating Science Stem Investigations: Make Your Own Liquid Crystal Thermometer

Liquid crystals have an ordered structure like a solid, but are also fluid like a liquid. The molecular-level structure of a liquid crystal can be affected by changes in its environment, such as electric field or temperature, which can lead to changes in its macroscopic properties, such as color. In this experiment, students mix three chemicals in different ratios to form four different liquid crystal mixtures that are sensitive to temperature. Working in groups, students will determine the working temperature range for each of the four liquid crystal mixtures. As an engineering challenge, the students will then use the information they have gathered to design and construct a thermometer using their liquid crystals. Kit contains enough materials for 8 groups including: 5 g Cholesteryl Oleyl Carbonate, 5 g Cholesteryl Pelargonate, 5 g Cholesteryl Benzoate, 8 Dram vials with caps, 90 clear labels, 8 plastic forceps, and 16 Black Index Cards. Teacher’s Manual and Student Study Guide copy masters are included. Aligned to the Next Generation Science Standards (NGSS).

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