Fall_2003_Midterm_Solutions

Fall_2003_Midterm_Solutions - Page 3 of 7 _ MULTIPLE...

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Page 3 of 7 Print Name : _________________________ MULTIPLE CHOICE. [4 points each] Circle your response(s) to the questions numbered 1 through 6. 1. All atoms of a given element have the same___________________ . a. mass b. number of protons c. density d. atomic mass number e. none of the above 2. Which species (one or more ) can be found on the earth’s crust? a. CaCO 3 b. Mg 3 (CO 3 ) 2 c. Cl d. Au 3. Which sample contains the fewest atoms: a. a teaspoon full of water b. 0.1 grams of salt c. one billion molecules of sucrose (sugar) d. a mole of Xenon e. a baseball bat
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Page 4 of 7 Print Name : _________________________ 4. Indicate which species (one or more) will dissolve in water: a. hydrogen peroxide b. octane c. lithium chlorate d. barium sulfate e. ammonia (NH 3 ) 5. In the reaction Ca (s) + FeS (s) CaS (s) + Fe (s) the oxidant (oxidizing agent) and reductant (reducing agent) are, respectively, a. Ca and Fe b. Fe and Ca c. Ca and S d. S and Ca e. none of the above 6. Gallium has two naturally occurring isotopes,
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Fall_2003_Midterm_Solutions - Page 3 of 7 _ MULTIPLE...

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