Liquid crystals are an interesting state of matter (between liquid and solid) that are widespread in nature.
The practical involves the mixing of cholesterols to make different liquid crystals and producing a thermometer.
There is also the option of an enterprise project using mood patches and pendants.
Liquid Crystals – Experiment Guide
Liquid Crystals – Teacher’s Guide
Liquid Crystals – Technician’s Guide
Liquid Crystals – Risk Assessment
Liquid Crystals – Introductory powerpoint