1 / 11

Science Crime Busters

Science Crime Busters. Lin Wozniewski lwoz@iun.edu. Safety. Students must wear: Closed shoes Slacks or skirts that come to the ankles Lab coat or lab apron Indirect vent or unvented chemical splash proof goggles. No impact glasses or visorgogs are permitted. Students can bring.

Download Presentation

Science Crime Busters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Science Crime Busters Lin Wozniewski lwoz@iun.edu

  2. Safety • Students must wear: • Closed shoes • Slacks or skirts that come to the ankles • Lab coat or lab apron • Indirect vent or unvented chemical splash proof goggles. No impact glasses or visorgogs are permitted

  3. Students can bring • Spot plate or something to do reactions in • Spoon or something to get powders out • Forceps • pH paper • Magnet • Hand lens

  4. Students Can Bring • Slide & cover slip • Pencil • Paper towels • 1 sheet of paper on which anything handwritten is acceptable. Sheets will be collected at the end of the event • A writing instrument • Nothing else is allowed

  5. Supervisors will provide • Unknowns • Iodine Solution • 1 M HCl • Differential Density materials • Chromatography Materials • Wash bottle with Distilled or ROI water • Candle and matches • Waste Container

  6. Supervisors may Provide • Microscope • Other reagents

  7. Main Focus • Chemical Analysis • Polymers • Chromatography • Crime Scene Physical Evidence • How to prepare students • Resources

  8. How To Prepare Students • Have students develop a dichotomous key for identifying chemicals • Practice identifying chemicals in as short a time as possible. • Practice identifying powders mixed in groups of 2 & 3 • Practice identifying plastics • Practice identifying hairs (only human, dog, cat possible) • Practice identifying fibers (only animal, vegetable, & synthetic possible)

  9. How to Prepare Students • Practice doing pen chromatograms • Practice doing juice chromatograms • Practice identifying fingerprints • Practice matching DNA chromatograms/electropherograms • Practice matching shoes & tires to their tracks • Try a liquid spatter activity • Practice using a waste container

  10. Resources • The National SO Website www.soinc.org • The information on my thumb drive

  11. Questions? • Thank You

More Related