Evidence Evaluation from the A. West Crime Scene

Evidence Evaluationfrom the S.W.A.M Crime SceneCSI Agents: Alex LlamasSkyler RabsonWill MathisonMary Neja

Physical PropertiesA characteristic of matter that is either observable (qualitative) or measurable (quantitative).Examples: WeightColorHardnessSmellTemperatureDensityChemical PropertiesA characteristic of a substance that describes its ability to participate in chemical reactions.Examples:FlammabilityColor ChangeTemperature ChangeFizzing and Bubbling

Metal Evidence EvaluationMetal 1 2.7cm long

Metal 24.4cm long Metal Evidence Evaluation

Identity of Metal 1 is : Aluminum Supporting Evidence: Aluminum is a lighter color than Metal 2Aluminum is softer than Metal 2Aluminum is a Non Magnetic metal

Resources: Georgia Holt Science and Technology Physical Science Text Book

Metal Evidence Evaluation

Identity of metal 2 is steelSupporting evidence:Steel is harder than aluminumSteel is magnetic aluminum is not magnetic

Resources: Georgia Holt Science and Technology Physical Science Text Book

Liquid Evidence EvaluationThere were three possible liquids, and each one reacted differently when it came in contact with a flame. Water Rubbing Alcohol

Vinegar

Liquid Evidence EvaluationMystery Liquid: alcoholSupporting evidence: The liquid is flammable

The liquid had the same odor as the alcoholResources: prior experiments and the Holt Science and Technology Physical Science Text Book

Powder Evidence EvaluationThere were four different powders: Baking soda, baking powder, baby powder, and corn starch

Baking powderBaking sodaCorn starchBaby powderMystery powderPowder Evidence EvaluationMystery powder: baking powderSupporting evidence:Reacts with water, vinegar, and iodineBubbled when it came in contact with water and vinegarTurned the iodine black

Resources: Knowledge from prior experiments10Summary of FindingsWe conclude that the Metals found at the SWAM crime scene were: aluminum, & steel

The liquid was: alcohol

The powder was: baking powder