Chemistry

Module #1: Forensic Chemistry – Thursday March 22, 2012 (Parents’ Night) and Friday March 23, 2012

We simulated a fake “crime scene” by presenting an incriminating letter, pens found at the crime scene, and actual fingerprints. The group explained that there are two types of fingerprints–visible and latent, and outlined the mechanism by which iodine crystals and superglue can make fingerprints “develop.” The incriminating letter was analyzed using chromatography to see which style of pen was used to write the letter, identifying the perpetrator’s pen. During Parents’ Night, we caught the principle, who stole the Mona Lisa by exposing his fingerprints on a marker using cyanoacrylate fuming, confirming the identity of the marker by chromatography, and then catching him.

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