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**Unformatted text preview: **CHAPTER 1 - The Nature of Chemistry 01-[01z]. How does pure water differ from an aqueous solution of salt? All of these answers are correct except: (A) one is clear, the other is cloudy. (B) one evaporates to leave no residue; the other evaporates to leave a white residue. (C) one is electrically conductive, the other is not electrically conductive. (D) one tastes salty, the other doesn’t. (E) the density of one is 1 g/mL, the other has a greater density. 02-[01z]. Which are physical changes? (1) boiling of water. (2) dissolving sugar in water. (3) oxidation. (4) acid-base neutralization. (5) shattering of glass. (6) expansion while being heated. (7) corrosion of aluminum. (A) all of them. (B) 1, 2, 5. (C) 2, 4, 7. (D) none. (E) 1, 2, 5, 6, 7. (F) 1, 2, 5, 6. 03-[01z]. Convert 3.4 kilograms to milligrams. (A) 34. (B) 340. (C) 3400. (D) 0.34. (E) 0.034. (F) 0.0034. (G) 3.4 x 10 6 . (H) 3.4 x 10-6 . 04-[01z]. A microliter is: (A) 10-3 L. (B) 10-6 L. (C) 10-9 L. (D) 10 +3 L. (E) 10 +6 L. (F) 10 +9 L. 05-[01z]. A cubic meter contains how many cubic centimeters? (A) 100. (B) 1000. (C) 10 +4 . (D) 10 +6 . (E) 10 +8 . (F) 10 +9 . 06-[01z]. The density of platinum is 23.4 g/cm 3 . Calculate the mass of 75.0 cm 3 of platinum. (A) 1.76 kg. (B) 5.70 g. (C) 1.65×10-3 g. (D) 5.70×10-3 g. (E) 1760 kg. (F) 5700 kg. 07-[01z]. How many cubic centimeters are there in a liter? (A) 1. (B) 10. (C) 100. (D) 1000. (E) 106. (F) 0.001. 08-[01z]. Convert 6.0 × 10-3 meter to millimeters. (A) 6.0 (B) 60. (C) 600. (D) 0.60. (E) 0.060. 09-[01z]. 10 liters contains how many cubic centimeters? (A) 100. (B) 1000. (C) 10 +4 . (D) 10 +6 . (E) 10 +8 . (F) 10 +9 . 10-[01z]. 100 liters contains how many cubic centimeters? (A) 100. (B) 1000. (C) 10 +4 . (D) 10 +5 . (E) 10 +6 . (F) 10 +7 . (D) 10 +8 . (E) 10 +9 . (F) 10 +10 . 11-[01z]. A milliliter is: (A) 10-3 L. (B) 10-6 L. (C) 10-9 L. (D) 10 +3 L. (E) 10 cubic centimeters. 12-[01z]. Convert 454 milligrams to grams. (A) 4.54. (B) 4.54x10-3 . (C) 454,000. (D) 227. (E) 0.000454. (F) 0.454. (G) 4540. 13-[01z]. The chemical symbol for chromium is: (A) Ch. (B) C. (C) Cr. (D) Cm. (E) Cu. 14-[01z]. The quantity 4 x 10 6 micrograms is the same as: (A) 0.004 grams. (B) 4 x 10 9 nanograms. (C) 0.000004 kilogram. (D) 0.4 milligram. (E) 40 picograms. 15-[01z]. What the prefix "k" mean? (A) 1000. (B) 106. (C) 100. (D) 10-3 . (E) 10-6 . 16-[01z]. Which is not a physical change? (A) boiling of water. (B) dissolving sugar in water. (C) a nail rusting. (D) hammering gold into a thin sheet. (E) stretching a rubber band. (F) expansion of a gas while being heated. (H) melting of ice in a pressurized chamber. 17-[01z]. Which is not a physical change? (A) melting ice. (B) dissolving salt in water. (C) combustion. (D) bending a nail. (E) shattering of glass. (F) shrinking of a gas while being cooled....

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