Exam 12: Drugs

What is NOT true about codeine?

Synthetic opiates may be encountered as drug evidence. Depending on their use, they may be considered illicit. What are the most common synthetic opiates and what therapeutic purposes can each be used for? What illicit purposes can each be used for?

Thin-layer chromatography was performed and four spots were visualized on the glass slide. The substance with which Rf value was least soluble in the stationary phase?

Which technique allows for both separation and specific identification of a questioned mixture of substances?

The most important drawback of gas chromatography is that a forensic chemist cannot identify an unknown substance based solely on the results of gas chromatography.

Summarize the ideal methods involved in the proper collection of drug evidence.

The reagent used for the field test of heroin is:

The recorder of a spectrophotometer measures the refractive index of light.

Marijuana is the most widely abused drug in the United States.

Marijuana is considered to be a:

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)Synthetic compounds, chemically related to the male sex hormone testosterone, that are used to promote muscle growth B)Any of several analytical techniques for separating mixtures into their components by attraction to a stationary phase while being propelled by a moving phase C)A substance that slows down the functions of the central nervous system D)A substance that induces changes in normal thought processes, perceptions, and moods E)An analytical method for identifying a substance by its selective absorption of different wavelengths of light F)A single test that specifically identifies a substance G)Invisible long frequencies of light beyond violet in the visible spectrum H)Colored light ranging from red to violet in the electromagnetic spectrum I)A preliminary test used to reduce the number of possible identities of an unknown substance J)A test that identifies a specific substance based on the color and shape of crystals formed when the substance is mixed with specific reagents K)A substance that speeds up the activity of the central nervous system L)A substance that lessens or eliminates pain M)Invisible short frequencies of light before red in the visible spectrum N)The conditioned use of a drug caused by underlying emotional needs O)Physiological need for a drug brought about by its regular use and characterized by withdrawal sickness when administration of the drug is abruptly stopped P)Drug that induces sleep and depresses vital body functions such as blood pressure, pulse rate, and breathing rate -Chromatography

Most narcotics are:

Consider the drugs morphine and marijuana. Describe the likelihood of psychological and physical dependence of each. Under what schedule of the Controlled Substances Act do they each fall, and why?

Multiple chemical components of a mixture are separated via thin-layer chromatography using silica gel as the stationary phase and ethanol and acetic acid as the mobile phase. What does the distance travelled by each component tell the analyst about their chemical identity?

________ law states that the quantity of light absorbed at any frequency is directly proportional to the concentration of material absorbing it.

Psychological dependence is the physiological need for a drug that has been brought about by its regular use.

A newly synthesized drug, called MET, is identified by the DEA. What drug schedule should this drug be classified under, given the following established characteristics? -High potential for abuse -A potential medical use requiring severe restrictions -A potential for severe psychological or physical dependence

The administration of which drug eliminates an addict's desire for heroin?

Which of the following is considered to be a hallucinogen?

Drugs prepared from opium include morphine, heroin, and codeine.