Forensics Lin Wozniewski Disclaimer This presentation was prepared using draft rules. There may be some changes in the final copy of the.

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Presentation transcript:

Forensics Lin Wozniewski

Disclaimer This presentation was prepared using draft rules. There may be some changes in the final copy of the rules. The rules which will be in your Coaches Manual and Student Manuals will be the official rules

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 – Sleeved Shirt (if wearing a lab apron)

Students can bring Spot plate or something to do reactions in Micrspatula or something to get powders out Forceps/ Metal Tongs pH paper 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 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?)

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, bat, & horse possible) Practice identifying fibers

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-primary and secondary structure

How to Prepare Students 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 To prepare students for test – Source for mass specs bin/cre_index.cgi bin/cre_index.cgi For Event Supervisors – For Lesson Plans for classroom use –

Questions? Thank You