Forensic EXAM2

  1. An element is selective in the frequency of light it will absorb or omit. This selectivity is due to its


    A.
  2. Atomic absorption is _______ (more/less) senstive and accurate than atomic emission
    More
  3. Walsh invented the atomic absorption spectrometer, which is currently used worldwide to measure how any individual element?
    68
  4. ________ and ________ are responsible for the colors in fireworks.
    metal atom / compounds
  5. Electrophoresis can be used in the crime lab to analyze what?
    DNA & Proteins
  6. Gas chromatography cannot produce a definitive identification of the chemical substance:
    True / False
    True
  7. A compound can be identified by a gas chromatography from its:



    B.
  8. A techniqu for separating and tentatively identifying is components of a mixture is:
    Chromatography
  9. A qualitative teset will reveal the _______ of a sample
    identity
  10. Organic chemisty is the study of substances containing the element ___________
    Carbon
  11. HPLC is mainly used to separate the following except:




    D.
  12. Which of the following is an element?




    B.
  13. The physical state that has both shape and volume is a:
    Solid
  14. What type of evidence would be expected to have trace elements?



    D.
  15. The atomic emission spectrograph is used to determine the ________ composition of an inorganic substance
    Elemental
  16. A "fingerprint" of an element is obtained by the techniques of:




    C.
  17. The techique commonly used to identify crystalline substances is:
    x-ray diffraction
  18. X-ray diffraction techique had outstanding sensitivity. T/F
    False. 5%
  19. In neutron activation analysis, an element is identified by measuring the energy of emitting ____________?



    A.
  20. What two elements at trace levels of the bullet evidence were studied and compared in Kennedy assassination case?
    Antimony and silver
  21. The rate of alcohol absorption on a full stomach is ________ the rate of alcohol absorption on an empty stomach


    A.
  22. What are 2 factors in determining the rate at which alcohol is absorbed into the blood stream?
    • body weights
    • the amount consumed
  23. Alcohol is oxidized in the body primarily in _______?
    The liver
  24. Alcohol can be eliminated from the body chemically unchanged in :



    D.
  25. The elimination of alcohol averages __________ per hour?
    0.5 oz
  26. The ration of alcohol in the blood to alcohol in breath is approximately what?
    2100:1
  27. Case 1: A person who has been poisened by antifreeze is given ___________
    ethanol
  28. Field sobriety test include the following except:



    D.
  29. Breath-testing devices for alcohol use ______ light to measure the quantity of alcohol are becoming popular
    Infrared
  30. The analytical technique widely used for directly measuring the amount of alcohol present in blood is what?
    Gas Chromatography
  31. In forensic toxicology, all postive finding must be confirmed by a specific chemical test. The confirmation test of choice is what?
    Gas Chromatorgraphy - mass spectromentry (GC-MS)
  32. Blood is drawn from a living suspect involved in an automobile accident. If the specimen is kept unrefrierated and at a moderately warm temperature the alcohol concertation can be expect to:




    A.
  33. Who can advise the toxicologist as to which analytical scheme to use to specifically identify a toxic substance?
    Drug recognition expert (DRE)
  34. A natural heat-producing process that may give rise to a fire is:



    D.
  35. Carbon monoxide is toxic because it




    A.
  36. Gasoline residues are best characterized by:




    B.
Author
samanthaburnham
ID
139609
Card Set
Forensic EXAM2
Description
F S
Updated