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

2. 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

3. 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)

4. Students can bring
Spot plate, test tubes & rack, beakers, or something to do reactions in
Spoon or something to get powders out
Forceps
pH paper
Magnet
Hand lens

5. 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

6. 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

7. Supervisors may Provide
Microscope
Other reagents

8. Crime Scene Physical Evidence How to prepare students Resources
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 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)

10. 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

11. Resources The National SO Website www.soinc.org To prepare students
For Event Supervisors
For Lesson Plans to use in the classroom

12. Questions?
Thank You