Quiz 2: Chemical Reactions, Atmospheric Science, and Physical Properties
A solved quiz covering chemical reactions, atmospheric science, and physical properties.
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Quiz 2: Chemical Reactions, Atmospheric Science, and Physical Properties
Quiz 2
Multiple Choice (3 points each).
Identify the choice that best completes the statement or answers the question.
__C__ 1. Separating a mixture of iron and sulfur can be done
a. by filtration
b. dissolving in water
c. with a magnet
d. by burning
_ B___ 2. In the balanced equation, 2 Al + 6 HCl 2 AlCl3 + 3 H2, the sum of the coefficients of the reactants is
a. 5
b. 8
c. 13
d. none of these
____ 3. The equation, 2 C(s) + O2(g) 2 CO(g), tells us
a. the number of atoms of each kind in reactants and products is the same
b. carbon monoxide (CO) is a product
c. two atoms of carbon undergo reaction
d. all of these
_ A___ 4. What prefix is the largest?
a. mega
b. centi
c. micro
d. kilo
__A__ 5. When coal and fuel oil are burned, what two primary pollutants are formed?
a. SO2 and CO2
b. HNO3 and H2SO4
c. CO and O3
d. hydrocarbons and NO2
__D__ 6. In air pollution abatement
a. all pollutants are necessarily eradicated
b. the amounts of pollutants are decreased
c. some pollutants are eradicated necessarily
d. all of the above
__C__ 7. Which atmospheric region contains the protective ozone layer?
a. troposphere
b. mesophere
c. stratosphere
d. thermosphere
_B___ 8. Which atmospheric region contains the protective ozone layer?
a. 7
b. 5
c. 15
d. 31
__C__ 9. Which of the following pairs of atoms share electrons equally?
Quiz 2
Multiple Choice (3 points each).
Identify the choice that best completes the statement or answers the question.
__C__ 1. Separating a mixture of iron and sulfur can be done
a. by filtration
b. dissolving in water
c. with a magnet
d. by burning
_ B___ 2. In the balanced equation, 2 Al + 6 HCl 2 AlCl3 + 3 H2, the sum of the coefficients of the reactants is
a. 5
b. 8
c. 13
d. none of these
____ 3. The equation, 2 C(s) + O2(g) 2 CO(g), tells us
a. the number of atoms of each kind in reactants and products is the same
b. carbon monoxide (CO) is a product
c. two atoms of carbon undergo reaction
d. all of these
_ A___ 4. What prefix is the largest?
a. mega
b. centi
c. micro
d. kilo
__A__ 5. When coal and fuel oil are burned, what two primary pollutants are formed?
a. SO2 and CO2
b. HNO3 and H2SO4
c. CO and O3
d. hydrocarbons and NO2
__D__ 6. In air pollution abatement
a. all pollutants are necessarily eradicated
b. the amounts of pollutants are decreased
c. some pollutants are eradicated necessarily
d. all of the above
__C__ 7. Which atmospheric region contains the protective ozone layer?
a. troposphere
b. mesophere
c. stratosphere
d. thermosphere
_B___ 8. Which atmospheric region contains the protective ozone layer?
a. 7
b. 5
c. 15
d. 31
__C__ 9. Which of the following pairs of atoms share electrons equally?
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Subject
Chemistry