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NAME ________________________________________ PERIOD __________
FORENSIC SCIENCE
Ms. Stark-Houck
Chapter 11 Supplemental Questions
1.
A “fingerprint” of an element is
obtained by the technique of:
a. Infrared spectrophotometry
b. Ultraviolet spectrophotometry
c. Gas chromatography
d. Emission spectroscopy
e. Thin-layer chromatography
2.Which of the following statements is
FALSE?
a. Protons and neutrons comprise
the nucleus of an atom.
b. The proton has a charge of plus
one.
c. The neutron has no electrical
charge.
d. The electron and proton have the
same mass.
e. An atom has an equal number of
protons and electrons.
3. The atoms of hydrogen, deuterium,
and tritium all have the same number
of protons, but differ in the number of
neutrons they possess. These
substances are:
a. Elements
b. Compounds
c. Molecules
d. Radioactive
e. Isotopes
4. In neutron activation analysis, an
element is identified by measuring
the energy of emitting:
a. Protons
b. Electrons
c. Neutrons
d. Gamma rays
e. Alpha rays
5. Gamma rays are:
a. Electrons
b. Protons
c. Neutrons
d. Alpha particles
e. Electromagnetic radiation
6. Which of the following statements is
correct?
a. All atoms of an element have the
same atomic mass number.
b. All atoms of an element have the
same number of protons.
c. All atoms of an element have the
same number of neutrons.
d. The number of protons in the
nucleus of an atom is called the
atomic mass number.
e. All atoms of an element have an
equal number of neutrons and
electrons.
7. The emission spectrograph is used to
determine:
a. The mass of a substance
b. The weight of a substance
c. The crystalline structure of a
substance
d. The elemental composition of a
substance
e. All of the above
8. Paint chips may be individualized
to a single source by examining
their:
a.
Infrared spectra
b.
Ultraviolet spectra
c.
d.
Color and layer structure
Pyrograms
9. The polymeric makeup of paint
binders can readily be compared by:
a. Emission spectroscopy
b. Thin-layer chromatography
c. Microscopy
d. Layer structure
e. Pyrolysis gas chromatography
10. Automobile finishes typically contain
which layer(s)?
a. Colorcoat
b. An electrocoat primer, colorcoat,
and clearcoat
c. Clearcoat
d. Electrocoat primer and colorcoat
e. None of the above
11. A technique frequently used to
compare soils is:
a. The immersion method
b. Density-gradient tubes
c. Flotation
d. Becke Line
e. Dispersion
12. Describe the proper collection and
preservation of paint evidence from
an automobile suspected of being
involved in a hit-and-run incident.
Paint that is foreign to the suspect
automobile is observed on the hood.
13. A suspect has been found miles from
the scene of a murder. Soil is found
adhering to the suspect’s shoe.
Describe the proper collection and
preservation of soil evidence that will
permit a thorough comparison of the
soil on the shoe to soil at the crime
site.