American Chemical Society
Isolation of Phytochrome
Why do soybean plants that are planted weeks apart in the spring mature simultaneously in the fall? Four independent activities cover the history of phytochrome research, scientist collaboration, the electromagnetic spectrum, and...
Santa Monica College
Flame Tests of Metal Cations
Scientists used flame tests to identify elements long before the invention of emission spectroscopy. Young chemists observe a flame test of five metal cations in the fourth lesson plan of an 11-part series. Individuals then work...
Annenberg Foundation
Annenberg Learner: The Science of Light: Light in Color
Site explores colors and how they are formed. Provides three different activities to explore color.
Math Science Nucleus
Math/science Nucleus: Light Magic
This animation discusses light and the properties of light in a storybook format. The animations cover the colors of the rainbow (ROYGBIV) along with prisms, light waves, reflection, and refraction.
CK-12 Foundation
Ck 12: Chemistry Simulation: Neon Lights
[Free Registration/Login Required] Neon lights are a type of discharge tube. Observe how electrons create colored light in a hydrogen gas discharge tube. Can you figure out why hydrogen's emission spectrum contains more than one color of...
Physics Aviary
Physics Aviary: Em Spectrum Lab
This lab is designed to allow students to look at the factors affecting the location of different colors formed by diffraction grating.
Khan Academy
Khan Academy: Understanding Spectra
This is an 8-problem quiz/practice to increase students' understanding of spectra. Color is a property of light. Test your understanding of this concept and how light can be represented in with a spectral power distribution.