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PSU FRNSC 100 Exam 2 Questions And Answers Rated A+
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PSU FRNSC 100 Exam 2 Questions And Answers Rated A+ What does it mean to extract a chemical? ANS To purify a substance by washing it with solvents to remove unwanted companion chemicals Sometimes a fire debris analyst will try to smell the odor of a burned sample when trying to find the presen...

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  • August 26, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • PSU FRNSC 100
  • PSU FRNSC 100

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PSU FRNSC 100 Exam 2 Questions And Answers
Rated A+
What does it mean to extract a chemical? ANS To purify a substance by washing it with solvents to remove
unwanted companion chemicals



Sometimes a fire debris analyst will try to smell the odor of a burned sample when trying to find the presence of an
ignitable liquid. ANS True



What is useful about mixtures? ANS They can be separated into their individual components



What does "GC" stand for? ANS Gas chromatograph



IR causes the bonds between atoms to rock, shake, and bend in predictable ways which makes it possible to
identify the substance being tested. ANS True



The IR is a separation device like the GC so chemical mixtures do not need to be extracted before testing. ANS
False



Which of the following is not true about the peaks on a gas chromatogram chart? ANS Each sharp peak
represents a separate compound



What kind of strip is used when testing for ignitable liquids? ANS Activated charcoal



The difference between an IR microscope and a light microscope is that the IR microscope uses mirrors for its
optics instead of glass lenses. ANS True



Paint is a mixture of at least these two components: ANS Pigment and vehicle



What name was given to the murders that were discussed in the article you read about the Soil Sleuth? ANS
World's End

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