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FORENSIC SCIENCE - CHEM 1100 - C JG QUESTIONS WITH CORRECT DETAILED ANSWERS.
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FORENSIC SCIENCE - CHEM 1100 - C JG QUESTIONS WITH CORRECT DETAILED ANSWERS.
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FORENSIC SCIENCE - CHEM 1100 - C JGQUESTIONS WITH CORRECT DETAILED
ANSWERS.
Why is organic analysis so much more common in the typical crime lab than inorganic
analysis? - ANSWER- All living things are built from organic compounds. Thus, a lot
more analysis falls under organic analysis than inorganic such as DNA analysis, blood
testing, fingerprint testing, evaluation of body fluids, compound determination such as
drugs or other hazardous chemicals. Usually 60% of cases are drug related, thus there
would be more organic analysis than inorganic
How might inorganic analysis be used in bullet and paint identification? - ANSWER-
Bullet: decoding the marks left behind by firearms discharging, like whether that is in the
walls of a room or on the casing of a bullet shell. Paint: Can test reds, yellows, and
whites because there are inorganic compounds. As well as testing different aspects of
paint such as pigments, modifiers, extenders, and binders.
We've talked briefly about the role of inorganic chemistry and poisoning. Provide two
examples of poisoning. - ANSWER- Arsenic and Thallium
The Litvinenko case is particularly interesting. Please explain what happened in this
poisoning and why it was so difficult to detect. - ANSWER- In 2006 Alexander
Litvinenko was poisoned with Polonium-210. A former Russian security officer
Litvinenko fell ill shortly after meeting some Russians at a London restaurant. Polonium
is extremely rare and radioactive element. A radiation trail helped to identify the
perpetrators and their path to and from Russia.
What is the periodic table and what information does it provide? - ANSWER- A table of
the chemical elements arranged in order of atomic number (which includes the number
or protons and electrons). It also includes the mass number.
Organic chemistry it primarily the study of materials based on this element? - ANSWER-
Carbon
Why is carbon and compounds containing carbon of such interest? - ANSWER-
Because all living things are built from carbon and its compounds.
Distinguish between a qualitative test and a quantitative test. Provide a specific example
which illustrates this point. - ANSWER- Qualitative = Is substance present? Ex: Is
Arsenic Present? Yes or No; Quantitative = How much of a substance is present? Ex: A
graph showing arsenic levels found in the groundwater
, An atom is based on these 3 subatomic particles? - ANSWER- Protons, Neutrons, and
Electons
Draw a simple diagram of the atom and label it's parts. - ANSWER-
https://www.google.com/url?
sa=i&source=images&cd=&ved=2ahUKEwjZgLTBs6reAhUCH6wKHdV4DOIQjhx6BAgB
EAM&url=https%3A%2F%2Fsciencestruck.com%2Flabeled-atom-
diagram&psig=AOvVaw0E3oMbMphwZtZeaQ-v0sHE&ust=1540859550094591
Inorganic analysis provides information on what elements? - ANSWER- All the other
elements on the periodic table besides carbon
Why are substantially more organic samples run by the typical crime lab? - ANSWER-
Most of the evidence received by crime laboratories requires the identification of organic
compounds. 60 % of all cases in the lab are drug related. This can often be much
higher. 85-90% of all cases involve drugs
What is the most common instrument used in the crime lab? - ANSWER- Microscopes
What are the 3 states of matter? Which is the highest energy of the three? - ANSWER-
Solid, Liquid, and Gas. Gas has the highest energy of the three.
Name two physiological factors and two non-drug factors that influence drug
dependence. - ANSWER- Physiological: Nature of the drug, dose, metabolism of person
Nondrug: Setting to which the drug is used, her or his expectation about using the drug,
society's attitude and possible responses
In general how does drug usage change with age? - ANSWER- Younger folk, tend to do
drugs at parties or music festivals to enhance ones' experience such as alcohol and
other "party drugs." When you are older, you may be more exposed to hardcore opiates
due to surgeries and operations when a doctor prescription an opioid for post-surgery
recovery. This may cause some users to get hooked to the drug even after surgery
recovery, and may switch to a street drug to fill this void. (the last example can apply to
younger folk as well if they had a surgery early on in life too, and then hooked on while
in their adult years) [this is my guessed answer]
How does drug use behavior vary with sex? - ANSWER- It depends on the drug. For
example, GHB is used as a rape drug because it causes the user to be incapable of
resisting and may cause memory problems. For anabolic steroids, it has a side effect
where it may increase or diminish sex drive for the user. [this is my guess]
Has the war on drugs had some significant change in the number of drug related
arrests? - ANSWER- Yes the number of arrest have increased.
Under what class of drugs is cocaine listed according to U.S. federal drug laws? Explain
why this classification is pharmacologically incorrect. - ANSWER- Cocaine is a schedule
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