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Forensics Lin Wozniewski Safety Students must wear: –Closed shoes –Slacks or skirts that come to the ankles –Lab coat or lab apron –Indirect.

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Presentation on theme: "Forensics Lin Wozniewski Safety Students must wear: –Closed shoes –Slacks or skirts that come to the ankles –Lab coat or lab apron –Indirect."— Presentation transcript:

1 Forensics Lin Wozniewski

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 Micrspatula or something to get powders out Forceps/ Metal Tongs pH paper Magnet Hand lens

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

5 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

6 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

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

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

9 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

10 How to Prepare Students Practice doing pen chromatograms/doing R f Practice doing juice chromatograms/doing R f Practice doing TLC/doing R f 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

11 Resources The National SO Website The information on my thumb drive

12 Questions? Thank You


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