chromatographic analysis

Presents step-by-step guidance for leading a series of activities in which students use paper chromatography to determine which pen was used to write a ransom note.

An exciting, standards-based video series examines core science content with an inquiry-based approach through experiments and investigations. Each program takes a laboratory technique from physics, chemistry, earth or life science, and makes it meaningful to students by explaining the theory behind the application through the usage of outstanding graphics and relevant real-life examples.