Evidence Evaluation from the Olympic Village Crime Scene - PowerPoint PPT Presentation

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Evidence Evaluation from the Olympic Village Crime Scene

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  1. Evidence Evaluation from the Olympic Village Crime Scene CSI Agents: Jackson Sevy, Alex Smolyar, Sarah Sorensen and Tessa Stanton

  2. The Problem Problem: Identify the mystery substances found at the crime scene. Identifications: Metal A was identified as steel. Metal B was identified as aluminum. The liquid was identified as rubbing alcohol. The powder was identified as baking powder.

  3. General Information Property: a property is a characteristic such as length (physical) or flammability (chemical.) Matter: anything that takes up space and has mass. Physical Property: a characteristic of matter such as color or odor. Chemical Property: a characteristic of matter which describes a substance’s ability to participate in chemical reactions. Chemical Reaction: a change that happens when one or more substances change into new substances with different properties.

  4. Metal Evaluation Metal A • Mass: 2.6 g • Density:7.85g/cm³ • Dark in color • Magnetic Identity: Steel Metal B • Mass: 1.8 g • Density: 2.7g/cm³ • Metallic looking • Not magnetic Identity: Aluminum Metal Samples

  5. Liquid Evaluation • Strong odor • Transparent • Flammable Identity: Isopropyl Alcohol Liquid Sample

  6. Powder Evaluation Identity: Baking Powder

  7. Evidence Summary Metal A: Steel Metal B: Aluminum Liquid: Isopropyl Alcohol Powder: Baking Powder