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Chapter 3 1.The process of identificationdetermines a substance’s physical or chemical identity with as near absolute certainty as existing analytical techniques will permit. 2.The number and type of tests needed to identify a substance must be sufficient to ELIMINATEallother substances from consideration. 3.A(n) Comparison analysis subjects a suspect specimen and a standard/reference specimen to the same tests and examination in order to determine whether they have a common origin. 4.Probability is the frequency of occurrence of an event. 5.Evidence that can be traced to a common source with an extremely high degree of probability is said to possess individualcharacteristics. 6.Evidence associated with a group and not with a single source is said to possess CLASS characteristics.8.The value of class physical evidence lies in its ability to corroborateevents with data in a mannerthat is, as nearly as possible, free of human error and bias.11. The believability of EYEWITNESS accounts, confessions, and informant testimony can all be disputed, maligned, and subjected to severe attack and skepticism in the courtroom.