What is a false positive? - ACCURATE ANSWERS When a sample tests positive for a particular drug and none is actually present
What parameters should be noted when recording details about evidence? - ACCURATE ANSWERS Weight of the sample (wet or dry), colors or odors, nature of the substance, and ...
What is a false positive? - ACCURATE ANSWERS✔✔ When a sample
tests positive for a particular drug and none is actually present
What parameters should be noted when recording details about
evidence? - ACCURATE ANSWERS✔✔ Weight of the sample (wet or
dry), colors or odors, nature of the substance, and the number of
packages or units of the substance
Drug compounds that are not chemically stable may be susceptible to
what types of degradation? - ACCURATE ANSWERS✔✔ Chemical,
microbial, and physical degradation
True or False:
Different forms of electromagnetic light can induce chemical decay of
chemically unstable compounds. - ACCURATE ANSWERS✔✔ True
True or False:
Physical decomposition may involve changes in a drug's crystal lattice
structure. - ACCURATE ANSWERS✔✔ True
True or False:
, Color tests are confirmative tests. - ACCURATE ANSWERS✔✔ False
Which tests might be performed on suspected cannabis? - ACCURATE
ANSWERS✔✔ Duquenois-Levine color test and microscopic
examination of the morphological features (clothing, cystolithic, and
glandular trichomes)
True or False:
Traces of impurities in street drugs may cause misleading results or
interfere with crystal formation, making identification difficult. -
ACCURATE ANSWERS✔✔ True
Which parameters are used in the identification of drug microcrystals? -
ACCURATE ANSWERS✔✔ Angle of extinction, sign of elongation,
refractive index, and sign of absorbance
Which parameters affect how well an analyte extracts into an organic
solvent? - ACCURATE ANSWERS✔✔ Degree of ionization, the pH of
the drug environment, and the pKa of the drug
True or False:
An acid is a substance that can be charged or uncharged and is capable
of donating a proton. - ACCURATE ANSWERS✔✔ True
True or False:
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