[CHY 183] - Final Exam Guide - Everything you need to know! (23 pages long)

• School: Ryerson University
• Department: Chemistry
• Course: CHY 183
• Professor: Monica Sauer

Document Summary

Bertillon"s system found that a person"s arm span and height of a were correlated. An expert witness can give opinions, regular witnesses cannot. To determine that scientific evidence is valid enough to go into court. Locard"s exchange theory: you will always leave something behind in a crime scene. Ex: in locard"s exchange video ropes, spray paint, car fibers, and animal hairs that got transferred to the victims. Chain of custody: a list of people who come into contact with a piece of evidence: this is key to move the case forward. It is important to collect reference samples so you have something to compare evidence to: for hair, soil, blood. You must have a search warrant in order to go into someone"s house to search for evidence. Under circumstances, you can enter without a warrant: emergencies like fire, earthquakes, natural disaster, if someone was recently arrested, you have the permission to search the person without a warrant.