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Chem 1020 Final Exam Answered Correctly!!
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Chem 1020 Final Exam Answered Correctly!!Study online at https://quizlet.com/_dj8wvc
1. On a Periodic Table, the columns of elements with groups
similar properties are
groups.
periods.
metals.
Rows.
2. The numbers 1 through 4 are used to identify four dif- 1
ferent elements on the periodic table. Which element
is expected to have 2+ charge when it forms an ion?
3
4
1
2
3. A recent set of advertisements has a picture of an cradle-to-cradle.
aluminum can with an aluminum-frame bicycle, along
with a hypothetical quote from the can that reads: "I
want to be a bike. Recycle me." The analysis of the
life cycle of an item starting with its raw materials and
ending with the used item becoming the raw material
for new products is called
cradle-to-grave.
cost-benefit analysis.
cradle-to-cradle.
reusability.
4. Which of the following is a pure substance? Silver wire
Concrete
Gasoline
Silver wire
Lemonade
5. The quantity 0.0000064 g expressed in scientific no- 6.4 × 10¯6 g
tation.
, Chem 1020 Final Exam Answered Correctly!!
Study online at https://quizlet.com/_dj8wvc
6.4 × 10¯6 g
6.4 × 107 g
6.4 × 106 g
6.4 × 10¯7 g
6. Which one of the following is an example of a homo- A glass of
geneous mixture? pulp-free lemon-
ade
A carbonated beverage
A glass of pulp-free lemonade
A bowl of cereal in milk
A chocolate chip cookie
7. Which corresponds to the composition of the ion D
typically formed by magnesium?
D
B
A
C
8. The nucleus of an atom contains protons and neu-
trons only.
protons only.
electrons, protons, and neutrons.
electrons and protons only.
protons and neutrons only.
9. Which one of the following is a subatomic particle Protons
located in the center of the atom and has a positive
charge?
Photons
Neutrons
Electrons
Protons
10. Which corresponds to the composition of the ion B
typically formed by fluorine? (Note: Remember
, Chem 1020 Final Exam Answered Correctly!!
Study online at https://quizlet.com/_dj8wvc
that fluorine is
A a halogen that
D needs one elec-
B tron to make an
C octet.)
11. Air is a(n) mixture.
compound.
mixture.
pure substance.
element.
12. Currently, the primary source of sulfur dioxide emis- coal burning pow-
sions into the atmosphere is er plants.
coal burning power plants.
plastic manufacturing.
diesel trucks.
gasoline-powered lawnmowers.
13. All of these pollutants can be detected by their odors CO.
except
NOx.
O3.
CO.
SOx.
14. Based on its name, which carbon compound contains Methane
the fewest carbon atoms?
Ethanol
Chlorobutane
Propyl alcohol
Methane
, Chem 1020 Final Exam Answered Correctly!!
Study online at https://quizlet.com/_dj8wvc
15. An inversion layer happens when a certain weather Air pollution con-
pattern traps cooler air near the surface of the earth centrates in the in-
with a warmer air mass above it. Why is this a prob- version layer
lem?
Heatwaves can occur
Excess precipitation could cause flooding
The cold air increases the chance for snowstorms
Air pollution concentrates in the inversion layer
16. What two factors are considered when determining Toxicity and expo-
the risk assessment for air pollutants? sure
Exposure and ppm
Toxicity and percentage
Toxicity and exposure
Percentage and ppm
17. The EPA limit for CO is 9 ppm. Express this number 0.0009 percent
as a percentage.
0.09 percent
9 percent
0.0009 percent
90 percent
18. Which chemical components are given off in car ex- All of these choic-
haust? es are correct
All of these choices are correct
CO2
NOx
H2O
19. The more toxic the pollutant, the higher the concen- False
tration is set when concerning air quality standards.
True
False
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