2 Flashcards
Sherwood Roland and Mario Molina’s work
on stratospheric ozone depletion garnered
them the 1995 Nobel Prize in Chemistry.
Which among the following species did they determine act as a catalyst for the
decomposition of ozone?
Chlorine Atoms
For a biochemical study involving the
tigers at Malabon Zoo, a fatty acid was
labeled with carbon-14. The sample was then
fed to the tigers and after a few hours the
tigers breath was analyzed. In which among
the following compounds would you expect
for the radioactive material to be
detected?
As Carbon Dioxide
Classify the following biochemical
compounds whether they are hydrophilic,
hydrophobic, or amphipathic: Fatty Acid,
Glycerol, Soap, Stearic Acid
Hydrophobic, Hydrophilic, Amphipathic,
Hydrophobic
What are the two most common components
of acid rain?
Sulfuric Acid and Nitric Acid
Match the following radioactive isotope
with its corresponding application:
[a] Cobalt-60 [b] Thallium-201
[c] Tritium [d] Mercury-197
1 – Heart Scan in Exercise
2 – Measure water content of body
3 – Kidney Scan
4 – Cancer Therapy
a-4, b-1, c-2, d-3
Determine the percent atom economy of
the Raschig Process.
17.3%
Which among the following radioactive
nuclide is often bombarded with the various
isotopes of lead in order to produce most
of the new superheavy elements?
Calcium-48 and Nickel-64
A person’s sense of smell and taste
depends on specific biochemical receptors
present in a person’s nose and mouth. In
2004, a Nobel prize was given to the
researchers who established this fact and
identified that the type organic compound
associated with the sense of smell and
taste. The chemical identified was:
Rhodopsin
A Chemical Engineer joined Pilipinas
Got Talent as a Magician that can perform
marvelous feats. For the finals, he claims
that he can make the audience
instantaneously smile or cry by simply
waving his hand. To execute his trick, If
he releases laughing gas from the front and
tear gas at the rear of a 201 row hall,
which row will inevitably smile and cry at
the same time?
134th Row
Halogens have the tendency to form
compounds with one another called
Interhalogens. which among the following
molecules has the LOWEST boiling point?
Chlorine Fluoride
Two beakers containing sulfuric acid
and phosphoric acid separately was
neutralized by the same base. If equal
amounts of the alkali was used for the
neutralization reaction and it produced
sulfate ions and dihydrogen phosphate ions,
what is the mass ratio of sulfuric acid to
phosphoric acid that was originally present
in the beakers?
1/2
When steam condenses into water at 90
deg C, the entropy of the system decreases.
What must be true if the second law of
thermodynamics is to be satisfied?
Entropy of the surrounding increases to
a greater extent than the decrease in the
entropy of the system
In which of the following cases does
entropy decreases?
Polymerization of Styrene and Butyl
Acrylate
Assuming a situation where a strong
acid is mixed with a strong base, if each
solution has a concentration of 1 N, which
mixture will display the highest increase
in temperature?
25 mL acid and 25 mL base
When benzene and naphthalene is mixed
in a single container at room temperature,
an ideal solution will be formed. Which
among the following expressions does NOT
describe the aforementioned process?
delta G > 0
