forensics
DESCRIPTION
Forensics. Lin Wozniewski [email protected]. 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. - PowerPoint PPT PresentationTRANSCRIPT
Forensics
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 bringSpot plate or something to do
reactions inMicrspatula or something to get
powders outForceps/ Metal TongspH paperMagnetHand 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 BringSlide & cover slipPencilPaper towels1 sheet of paper on which anything
handwritten is acceptable. Sheets will be collected at the end of the event
A writing instrumentNothing else is allowed
Supervisors will provideUnknowns Iodine Solution2 M HClBenedicts Solution2 M NaOHDifferential Density materialsChromatography MaterialsWash bottle with Distilled or ROI
waterCandle and matches
Supervisors will Provide
Bunsen Burner or other heat source of similar BTU
Hot water bath Waste Container (Microscope?) (Other reagents?)
Main FocusChemical AnalysisPolymersChromatographyCrime Scene Physical
EvidenceHow 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