Forensic Chemistry in Crime Investigation
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Forensic Chemistry in Crime Investigation

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@GratefulOstrich6985

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Questions and Answers

What is the primary function of forensic chemistry in criminal investigations?

  • To determine the guilt or innocence of suspects
  • To predict future criminal behavior
  • To conduct psychological evaluations of offenders
  • To analyze physical evidence collected from crime scenes (correct)

    • Which role does a forensic chemist primarily fulfill in relation to evidence?

  • Analyzes and interprets chemical evidence (correct)
  • Collects evidence from crime scenes
  • Manages the crime laboratory
  • Interviews witnesses during investigations

    • What distinguishes class characteristics from individual characteristics in physical evidence?

  • Class characteristics can identify a specific item, whereas individual characteristics group items.
  • Class characteristics are unique, while individual characteristics are general.
  • Class characteristics apply to groups of items, while individual characteristics pertain to a single source. (correct)
  • Class characteristics are irrelevant in forensic investigations.

    • Why is the preservation of physical evidence crucial in forensic investigations?

    <p>It ensures the evidence remains undamaged for analysis.</p> Signup and view all the answers

    What type of tests are used to initially determine the presence of blood at a crime scene?

    <p>Color tests</p> Signup and view all the answers

    What is the liquid portion of blood that constitutes 65% of its total volume called?

    <p>Plasma</p> Signup and view all the answers

    What is the main purpose of conducting a presumptive test for blood?

    <p>To ascertain if the sample contains blood</p> Signup and view all the answers

    Which of the following is NOT a factor in the loss of physical evidence according to forensic principles?

    <p>Clear documentation</p> Signup and view all the answers

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