Lin Wozniewski lwoz@iun.edu Forensics Lin Wozniewski lwoz@iun.edu.

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Presentation transcript:

Lin Wozniewski lwoz@iun.edu Forensics 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 Spot plate or something to do reactions in Micrspatula or something to get powders out Forceps/ Metal Tongs pH paper Magnet Hand lens

Students Can Bring Test Tubes Test Tube rack Test Tube holder Eye droppers Funnel Filter Paper Battery Conductivity meter Flame loop Ruler Calculator

Students Can Bring Slide & cover slip Pencil Paper towels 1 sheet of paper on which anything handwritten is acceptable. A writing instrument Nothing else is allowed

Supervisors will provide Unknowns Iodine Solution 2 M HCl Benedicts Solution 2 M NaOH Differential Density materials Chromatography Materials Wash bottle with Distilled or ROI water Candle and matches

Supervisors will Provide Bunsen Burner or other heat source of similar BTU Hot water bath Waste Container (Microscope?) (Other reagents?)

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

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 plastics Practice identifying hairs (only human, dog, cat possible) Practice identifying fibers

How to Prepare Students Practice doing pen chromatograms/doing Rf Practice doing juice chromatograms/doing Rf Practice doing TLC/doing Rf Practice identifying masses from mass specs Practice identifying fingerprints Practice matching DNA chromatograms/electropherograms Practice matching shoes & tires to their tracks Practice blood typing Do a liquid spatter activity Practice using a waste container Do a glass refractive index activity

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

Questions? Thank You