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Crime Busters
AUBERY HADDACH
BRIAN WANG
Safety Safety is as simple as “ABC” Always Be Careful
1
Always wear your safety goggles
(over your eyes not your forehead)
1
Long hair (shoulder length or longer)
must be tied back
1
Pants or skirt need to cover legs upto ankles. Lab coat upto wrists & knees. Gloves are opLonal.
1
Open toes shoes or sandals are not allowed
1
Never, ever, TASTE, TOUCH or FEEL any of
the substances
1
If you get anything in your eyes or skin,
WASH WITH WATER IMMEDIATELY
then go to a Coach or Adult
1
Otherwise you will be asked to leave the team for good!
1 Absolutely
The Competition Crime Busters Overview
Given a scenario, a collection of evidence, and possible suspects, students will perform a series of tests. The test results along with other evidence will
be used to solve a crime.
2 People 50 Minutes 5 Parts
① Qualita(ve Analysis ② Polymer Tes(ng / Natural
and Man-‐made Substances ③ Paper Chromatography ④ Crime Scene Physical
Evidence ⑤ Analysis
An Example
1. QualitaLve Analysis
• Solids • Non-‐Powdered Metals • Liquids
2. Polymer TesLng Natural & Man-‐made Substances
• Hair • Fibers • Recyclable PlasLcs
3. Paper Chromatography
4. Crime Scene Physical Evidence
• Fingerprints • DNA evidence • Shoeprints & Lre treads • Soil • Spa]ers
5. Analysis
Glossary of Terms So what do these words mean anyway?
ProperLes of Powders and Metals
• Granular • Cubical • Irregular • Regular • Coarse • Fine
Shape & Size
ProperLes of Powders and Metals
Luster • Shiny • Dull • …
ProperLes of Powders and Metals
Acid – Neutral -‐ Base
pH
ProperLes of Powders and Metals
Solubility Color • Pale Yellow • Dark Blue • Grayish • Off-‐white • …
• Soluble • Insoluble
ProperLes of Powders and Metals
ReacLon to HCl • None • Vigorous • Delayed • Li]le • …
• MagneLc • Odors • …
Special ProperLes
Why is this Important? (a sample)
Next Class…Properties of Powders & Metals
Happy Halloween!
Lets clean up and walk out together.
(Natanya, Riya, Iniyaa and David to BRIDGE)
