FORENSICS - Division C
Students will identify polymers, solids, fibers, and other materials in a crime scenario.
Added 01/26/12 There will be NO Bunsen burners. Therefore, no flame tests on substances. Also, logically, then - no flame test equipment is needed.
Tea light candles will be provided for fiber tests.
Teams should bring something to test their substances in – spot plates, condiment cups, test tubes. SOMETHING! Testing on the lab bench is NOT ok. If they choose to make an unreasonable mess on the lab bench, I will not hesitate to hold them after time to clean up after themselves.
Teams should bring something to scoop/transfer their substances – spatulas, coffee stirrers, toothpicks. SOMETHING!
Tweezers can be used instead of tongs, and something of this nature should be used for holding fibers over the candle.
NO microscopes. Although, a photograph of a microscopic field of view may be provided.
Added 12/05/11 No Bunsen burners will be used. There may be some small tea light candles, which are sufficient to perform the fiber burn tests.
Question: Will the students need to be able to run the burn tests on the fibers, paper chromatography, TLC, mass spec, or flame tests OR will they need to need to know how to analyze the results of these tests?
Answer: To date, when necessary, we have provided tea light candles, which are sufficient to perform the fiber burn tests. We have not used Bunsen burners.
Students will be expected to read results – either in tables or graphs - for TLC or mass spec. Running a paper chromatography experiment is a possibility during the event. Students should be prepared to run paper chromatography and read results, or, like the other systems - read results in tables or graphs.
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