Thermometry Concept

Demonstrations in Thermometry

Open case of A.W. Faber Thermochrom crayons with multiple colored sticks labeled with temperatures in Celsius and a reference chart in the lid
Safety

Heat Sensitive Crayons

Thermochromic crayon marks on an aluminum plate change color at specific temperatures when heated with a propane torch. Students see that any reproducible temperature-dependent property can serve as a thermometer, …
Six liquid crystal sheets on a white surface with a reusable heat pad in center; one sheet shows teal/green activation, two show partial blue activation near the heat pad, others are black; orange identification stickers on corners
Safety

Temperature-Sensitive Liquid Crystals

Encapsulated liquid crystal sheets change color continuously across a calibrated temperature range, progressing from black through red, green, and blue. Students observe temperature-dependent physical properties and can visualize heat transfer …
Gas thermometer with copper spherical bulb, brass stem, Winsco gauge reading -60 to 60 cm Hg, brass valve with hose barb, and black handle
Safety

Finding Absolute Zero

Measure gas pressure at four known temperatures and plot pressure vs. temperature to experimentally determine absolute zero by linear extrapolation. Provides a concrete foundation for the Kelvin scale and Gay-Lussac's …