Page 21 - A Burning Question Fire Debris

Pre-Lab

Questions

1. Fill in the Blank: 5. True or False:
Activated charcoal is a form of carbon that has
................................ is a substance that readily
ignites when exposed to an ignition source. been specifically processed to be extremely
porous and to have a large surface area capable
of adsorption.
2. Does the presence of an ignitable liquid
indicate a fire was a result of arson? ...............................................................................

............................................................................... 6. What are the disadvantages of using carbon
............................................................................... disulfide as a desorption solvent?
...............................................................................
...............................................................................
...............................................................................
3. What factors may indicate to an investigator ...............................................................................
that an ignitable liquid is present at the scene
of a fire?
7. How is the presence of an ignitable liquid at a
............................................................................... fire scene confirmed?
...............................................................................
............................................................................... ...............................................................................
...............................................................................
...............................................................................
4. If a fire investigator identifies a pour pattern
at a fire scene, should a sample be taken from
a dark, heavily burned section of the pour 8. Why are colorimetric tubes sometimes used to
pattern? Why or why not? test fire debris samples?

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THE MYSTERY OF LYLE AND LOUISE 21