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work > ABIO EXAM 3 > Flashcards

ABIO EXAM 3 Flashcards

1
Q

what is rimfire

A

Round of ammo is complete.
No cartridge pin
Rimfire has the priming compound in the rim of the cartridge.
Cartridge is self- contained allows fast reloading, repeating action, reliability

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2
Q

extractor mark

A

left on the rim of the spent casing

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3
Q

breech face mark

A

found on the head stamp of the casing

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4
Q

firing pin mark

A

left on the middle of the primer

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5
Q

breech face

A

The area around the firing pin, which is against the head of the cartridge during firing.

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6
Q

Calvin Goddard, with Charles Waite, Phillip O. Gravelle, and John H Fisher

A

perfected the comparison microscope for use in bullet comparison.

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7
Q

grooves are smaller than lands

A
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8
Q

to match a bullet to a barrel

A

Look at the grooves on the top of the barrel. e.g, These grooves go from left to right. (twists to the right)

nd match to the grooves of the bullet that’s closest

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9
Q

Gun Control Act of 1968

A

All guns produced in the USA or imported must have a serial number

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10
Q

Acid serial number recovery
method

A

Sand the surface smooth.
Add a strong acid evenly across the surface
then the Density of the metal surrounding the imprinted serial number etches slower than the surrounding metal

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11
Q

Magnetic serial number recovery method

A

Polish the surface of the metal smooth
Add Iron oxide power in oil

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12
Q

narcotics

A

Psychoactive compound with sleep-inducing properties

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13
Q

Hallucinogens

A

Alteration in normal thought processes, perception and moods

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14
Q

Depressants

A

slow down or depress the central nervous system

Lower blood pressure, heart rate and respiratory depression,

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15
Q

Stimulants

A

speed up the central nervous system

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16
Q

steroids

A

human growth hormone

17
Q

color test

A

React with chemical groups to produce a color change(marquis test)

18
Q

Thin-layer chromatography

A

Unknown samples are compared against standards

Can be used to identify a mixture of drugs

requires a reference sample

19
Q

Gas Chromatography

A

Separates mixtures
Compounds I.D. by retention time (Retention time – How long it takes for a compound to pass through the gas chromatogram)

requires a reference sample

20
Q

Infrared Spectroscopy (IR)

A

Measures the light wavelengths absorbed by a compound

databases required for use

21
Q

Mass Spectrometry

A

Analyzes samples by mass
No reference/Uses database

22
Q

Illicit Labs- what are forensic chemists looking for

A

Precursors (a compound that participates in a chemical reaction to produce another compound) , Active reactions and Leftover materials

23
Q

Bob Paillet
Owners of Purdue Pharmaceutical. This family implemented
policies resulting in the addiction of patients to opioids

A

Developed a simple method for the synthesis of
methamphetamine and shared this method with a Texas biker gang

24
Q

Sackler family

A

Owners of Purdue Pharmaceutical. This family implemented
policies resulting in the addiction of patients to opioids

25
Q

the medical examiner in NY in 1920
who standardized toxicology conducted during autopsy examinations?-
Charles Norris

A
26
Q

Forensic Toxicologist – Identify drugs, poisons and toxins, but are limited to matters that pertain to violations of criminal law

A
27
Q

What organ eliminates the majority of alcohol from the body

A

liver

28
Q

Two methods to determine BAC (blood alchohal control

A

breathalyzer (Determines the BAC level base on the amount of alcohol in a persons breath)
, used by the police and gas chromatography, used by toxicologists

29
Q

fuel cell (breathelyzer)

A

Alcohol is required to complete the circuit of a fuel cell battery

More alcohol = more current

Current determines BAC

30
Q

Infrared Detector (IR)

A

Band intensity determines the BAC

31
Q

Gas Chromatography

A

GC Peak volume is proportional to the concentration

32
Q

What compounds are toxicologists trying to identify? Drug Metabolites

A
33
Q

Samples of blood must be preserved before and after testing
Must be a preservative and anticoagulant

A
34
Q

What evidence provides clues to who killed Mary Yoder?

A

fake email

user dictionary ( words used in messages

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