Just as forensic chemists and CSIs test unknown crime samples of skin, hair, paint, and other unmentionable strange substances --found at CRIMES SCENES, Students will use both Physical and Chemical Properties and CHANGES to CORRECTLY IDENTIFY several UNKNOWN White Powdery Substances found at a recent CRIME SCENE. In order to determine the IDENTITY of these UNKNOWN SUBSTANCES, students will use Observable Physical Properties, & TESTABLE Chemical Properties-- which can ONLY be shown by their