With the Fluorescent Dye Chemical Demonstration Kit, explore the concepts of absorption and emission of light. When the lights are off and a black light is shined on the dyes, they glow, and with different colors than under the white light.
Light up your classroom with fluorescent solutions! Under normal white light in the laboratory, these solutions appear colorless, yellow, orange, and pink. But, when the lights are turned off and a black light is shined on them, they glow—and with different colors than under the normal white light! Explore the concepts of absorption and emission of light with this enlightening demonstration. Teacher Demonstration Notes included. Enough materials are provided to perform the demonstration seven times.
Concepts: Fluorescence, absorption, emission, electronic structure, spectroscopy.
Time Required: 10 minutes
Chemicals Provided: Quinine, fluorescein, eosin Y, rhodamine B, and ethyl alcohol solutions
Note: A black light is needed and available separately.