Quiz 2: 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 AlCl 3 + 3 H 2 , 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) + O 2 (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. SO 2 and CO 2 b. HNO 3 and H 2 SO 4 c. CO and O 3 d. hydrocarbons and NO 2 __ 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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