Week 8 Final Quiz

Week 8 Final Quiz - A) always consist of molecules. B)...

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Week 8 – Final Quiz 1. When a ton of coal burns, it loses 3.3 x 10 -7 kg of mass. The energy given off is A) 3.7 x 10 -24 J. B) 3.3 x 10 -7 J. C) 100 J. D) 3.0 x 10 10 J. 2. Superconductivity occurs in certain substances A) only at very low temperatures. B) only at very high temperatures. C) at all temperatures. D) only when they are in the liquid state. 3. Two waves meet at a time when one has the instantaneous amplitude A and the other has the instantaneous amplitude B. Their combined amplitude at this time is A) A + B. B) A – B. C) between A + B and A – B. D) indeterminate.
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4. Which one of the following substances is a homogeneous mixture? A) aluminum B) seawater C) salt D) wood 5. Ionic compounds in the solid state
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Unformatted text preview: A) always consist of molecules. B) sometimes consist of molecules. C) never consist of molecules. D) never occurs as crystals. 6. Pure water has a pH of A) 0. B) 1. C) 7. D) 10. 7. When a supersaturated solution is disturbed, A) it may solidify. B) it may boil. C) some of its solute may crystallize out of solution. D) a precipitate may form. 8. The oxidation of glucose does not yield A) water. B) oxygen. C) carbon dioxide. D) energy. 9. An example of a light-colored, coarse-grained intrusive igneous rock is A) granite. B) shale. C) gneiss. D) basalt. 10. The source of the sun's energy is A) radioactivity. B) nuclear fission. C) nuclear fusion. D) combustion....
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Week 8 Final Quiz - A) always consist of molecules. B)...

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