Drugs (Chapter 9: Criminalistics)

Question 1

Psychological Dependence (Definition)

Answer 1

The conditioned use of a drug caused by underlying emotional needs (Criminalistics, Saferstein).

Question 2

Physical Dependence (Definition)

Answer 2

Physiological need for a drug that has been brought about by its regular use. Dependence is characterized by withdrawal sickness when administration of the drug is abruptly stopped (Criminalistics, Saferstein).

Question 3

Narcotic (Definition)

Answer 3

Analgesic or pain-killing substance that depresses vital body functions such as blood pressure, pulse rate, and breathing rate. The regular administration of narcotics will produce physical dependence (Criminalistics, Saferstein).

Question 4

Analgesic (Definition)

Answer 4

A drug or substance that lessens or eliminates pain (Criminalistics, Saferstein).

Question 5

Hallucinogen (Definition)

Answer 5

A substance that induces changes in mood, attitude, thought, or perception (Criminalistics, Saferstein).

Question 6

Depressant (Definition)

Answer 6

A substance used to depress the functions of the central nervous system. Depressants calm irritability and anxiety and may induce sleep (Criminalistics, Saferstein).

Question 7

Stimulant (Definition)

Answer 7

A substance taken to increase alertness or activity (Criminalistics, Saferstein).

Question 8

Anabolic Steroids (Definition)

Answer 8

Steroids that promote muscle growth (Criminalistics, Saferstein).

Question 9

Screening Test (Definition)

Answer 9

A test that is non-specific and preliminary in nature (Criminalistics, Saferstein).

Question 9

Confirmation (Definition)

Answer 9

A single test that specifically identifies a substance (Criminalistics, Saferstein).

Question 10

Marquis Test (Reagent)

Answer 10

2% formaldehyde in sulfuric acid

Question 11

Marquis Test (Results)

Answer 11

Purple: presence of heroin/morphine/most opium derivatives

Orange-Brown: ampetamines and methamphetamine

Question 12

Dillie-Koppanyi (Reagent)

Answer 12

1% cobalt acetate in MeOH is added to unknown substance, followed by 5% isopropylamine in MeOH

Question 13

Dillie-Koppanyi (Results)

Answer 13

Violet-blue for barbituates

Question 14

Duquenois-Levine (Reagent)

Answer 14

A: 2% vanillin and 1% conc. HCl in EtOH
B: conc. HCl
C: chloroform

Question 15

Duquenois-Levine (Results)

Answer 15

Purple in chloroform layer for marijuana

Question 16

Van Urk (Reagent)

Answer 16

1% p-dimethylaminobenzaldehyde in 10% conc. HCl and EtOH

Question 17

Van Urk (Results)

Answer 17

Purple-Blue for LSD

Question 18

Scott Test (Reagent)

Answer 18

A: 2% cobalt thiocyanate in water and glycerin
B: conc. HCl
C: chloroform

Question 19

Scott Test (Results)

Answer 19

A (cobalt thiocyanate) will turn blue in the presence of cocaine. Solution will turn pink upon addition of HCl. Chlorform layer (C) will turn blue again.