chapter 9 study guide

Trace Evidence

• Trace evidence is physical evidence found in small amounts at a crime scene
• examples include: paint chips, metal particles, body fluids, powders, exc.

analysis

• Different pieces of Trace evidence can tell what crime what committed
• Trace evidence is "a piece to the puzzle" that helps narrow down suspects

Lip prints

• there are four type of lip prints
• vertical lines
• cross hatching
• horizontal lines
• branching grooves

Lips continued

• the study of lip prints is called cheiloscopy

paint

• paint can be used as evidence in hit and run cases
• the layers of different paints in a cross section are unique

Vocab

• jimmy - a short crowbar with curved ends
• mobile phase- the carrier of analytes in chromatographic separations(developing solvent
• decant - to pour off the top layer of liquid after the bottom material has settled
• stationary phase - the fixed absorbing medium analytes in chromatographic separations
• salt - in chemistry, the product of an acid with a base

Daubert Ruling

• is simply the revision of admissible scientific evidence in court