Chemistry, 11e (Brown) Chapter 1: Introduction: Matter and Measurement

Multiple Choice and Bimodal 1) Solids have a shape and are not appreciably . A) definite, compressible B) definite, incompressible C) indefinite, compressible D) indefinite, incompressible E) sharp, convertible Answer: A Diff: 1 Page Ref: Sec. 1.2 2) is the chemical symbol for elemental sodium. A) S B) W C) So D) Na E) Sn Answer: D Diff: 1 Page Ref: Sec. 1.2 3) If matter is uniform throughout, cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) . A) heterogeneous mixture B) element C) homogeneous mixture D) compound E) mixture of elements Answer: D Diff: 4 Page Ref: Sec. 1.2 4) The symbol for the element potassium is . A) Pt B) P C) K D) S E) Ca Answer: C Diff: 1 Page Ref:Sec. 1.2 5) The symbol for the element magnesium is . A) Rb B) Mn C) Ne D) Si E) Mg Answer: E Diff: 1 Page Ref:Sec. 1.2 6) The initial or tentative explanation of an observation is called a(n) . A) law B) theory C) hypothesis D) experiment E) test Answer: C Diff: 2 Page Ref:Sec. 1.3 2 7) A concise verbal statement or mathematical equation that summarizes a broad variety of observations and experiences is called a(n) . A) law B) theory C) hypothesis D) experiment E) test Answer: A Diff: 2 Page Ref:Sec. 1.3 8) A separation process that depends on differing abilities of substances to form gases is called . A) filtration B) solvation C) distillation D) chromatography E) all of the above are correct Answer: C Diff: 3 Page Ref:Sec. 1.3 9) The SI unit for mass is . A) B) gram kilogram C) pound D) troy ounce - E) none of the above Answer: A Diff: 1 Page Ref:Sec. 1.4 10) A one degree of temperature difference is the smallest on the A) Kelvin B) Celsius C) Fahrenheit D) Kelvin and Celsius E) Fahrenheit and Celsius Answer: C Diff: 3 Page Ref:Sec. 1.4 temperature scale. 11) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ? A) km/hr B) km/s C) m/hr D) m/s E) cm/s Answer: D Diff: 3 Page Ref:Sec. 1.4 3 12) The unit of force in the English measurement system is 1b • ft . The SI unit of force is the Newton, which is s2 in base SI units. A) g • cm s2 B) kg • m hr2 C) kg • m s2 D) g • ms2 E) g • cm s Answer: C Diff: 4 Page Ref:Sec. 1.4 13) Momentum is defined as the product of mass and velocity. The SI unit for momentum is ? A) kgs• m B) kg • m hr C) g • ms D) g • km s E) kg • km hr Answer: A - Diff: 4 Page Ref:Sec. 1.4 14) The SI unit of temperature is . A) K B) °C C) °F D) t E) T Answer: A Diff: 2 Page Ref:Sec. 1.4 15) The temperature of 25°C is in Kelvins. A) 103 B) 138 C) 166 D) 248 E) 298 Answer: E Diff: 1 Page Ref:Sec. 1.4 4 16) The freezing point of water at 1 atm pressure is . A) 0°F B) 0 K C) 0°C D) -273°C E) -32°F Answer: C Diff: 2 Page Ref:Sec. 1.4 17) A temperature of 400 K is the same as °F. A) 261 B) 286 C) 88 D) 103 E) 127 Answer: A Diff: 2 Page Ref:Sec. 1.4 18) A temperature of K is the same as 63°F. A) 17 B) 276 C) 290 D) 29 E) 336 Answer: C - Diff: 2 Page Ref:Sec. 1.4 19) 1 nanometer = A) 1000 B) 0.1 C) 0.01 D) 1 E) 10 Answer: A Diff: 2 Page Ref:Sec. 1.4 picometers 20) 1 picometer = centimeters A) 1 × 1010 B) 1 × 1010 C) 1 × 108 D) 1 × 108 E) 1 × 1012 Answer: B Diff: 2 Page Ref:Sec. 1.4 21) 1 kilogram = milligrams A) 1 × 106 B) 1,000 C) 10,000 D) 1,000,000 E) none of the above Answer: D Diff: 2 Page Ref:Sec. 1.4 5 - 24) The density (in g/cm3 ) of a gold nugget that has a volume of 1.68 cm3 and a mass of 32.4 g is . 22) "Absolute zero" refers to . A) 0 Kelvin B) 0° Fahrenheit C) 0° Celsius D) °C + 9/5(°F - 32) E) 273.15°C Answer: A Diff: 1 Page Ref:Sec. 1.4 23) An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than cm3 , then the sphere will sink in liquid mercury (density = 13.6 g/cm3 ). A) 0.723 B) 1.38 C) 134 D) 7.48 E) none of the above Answer: A Diff: 3 Page Ref:Sec. 1.4 volume of A) 0.171 B) 644 C) 10.5 D) 0.00155 E) 5.84 Answer: E cm3 . Diff: 2 Page Ref:Sec. 1.4 26) The density of silver is 10.5 g/cm3 . A piece of silver that occupies a volume of 23.6 cm3 would have a mass of g. A) 248 B) 0.445 C) 2.25 D) 112 E) 23.6 Answer: A Diff: 2 Page Ref:Sec. 1.4 25) The density of silver is 10.5 g/cm3 . A piece of silver with a mass of 61.3 g would occupy a A) 0.0519 B) 19.3 C) 54.4 D) 0.0184 E) 32.4 Answer: B Diff: 1