The Numerical Side of Chemistry

Introductory Chemistry: Atoms First, The Numerical Side of Chemistry 2.1 Multiple-Choice Questions 1) Identify the exact number. A) a number of coins B) the diameter of a coin C) the radius of a coin D) the mass of a coin Answer: A 2) Identify the piece of glassware that provides the least precise volume measurement of a liquid. A) beaker B) graduated cylinder C) buret D) pipette Answer: A 3) Which of the following represents an estimated measurement? A) A calendar week has 7 days. B) The U.S. national debt is 6 trillion dollars. C) There are 50 states in the United States of America. D) My bank account contains 19 dollars and 26 cents. Answer: B 4) For the measured value 6.73 pounds, what is the degree of uncertainty? A) +/- 10 pounds B) +/- 1 pound C) +/- 0.1 pound D) +/- 0.01 pound Answer: D 5) How many significant figures are in 43.8001? A) 2 B) 3 C) 4 D) 6 Answer: D 6) Which one of the following numbers does not have four significant figures? A) 1.007 g B) 0.0007 g C) 1.070 g D) 1700. g E) 1.700 g Answer: B 7) Round off 907,506 to four significant figures. A) 9.075 × 10-5 B) 9.075 × 105 C) 9,075 D) 90,751 E) 908,000 Answer: B 8) How many significant digits are present n the number 6046.2? A) 4 B) 3 C) 5 D) 1 Answer: C 9) How many significant digits are present in the number 0.02560? A) 3 B) 4 C) 5 D) 6 Answer: B 10) How many significant figures are present in 0.00123, 7000, and 1.519 × 10-2? A) 6, 4, 4 B) 4, 1, 1 C) 7, 1, 4 D) 3, 1, 4 Answer: D 11) The number 0.0040600 has ________ trailing zeros. A) 0 B) 1 C) 2 D) 6 Answer: C 12) The correct scientific notation for 147.8 × 10-3 is ________. A) 1.478 B) 1478 × 10-4 C) 1.478 × 10-1 D) 1.478 × 10-5 Answer: C 13) Convert 0.000001546 mi to scientific notation. A) 1.546 × 106 mi B) 1.546 × 105 mi C) 1.546 × 10-5 mi D) 1.546 × 10-6 mi Answer: D 14) The number 0.0247 expressed in scientific notation is ________. A) 2.47 × 10-4 B) 2.47 × 10-2 C) 2.47 × 10-1 D) 24.7 Answer: B 15) The number 0.00003007 expressed in scientific notation is ________. A) 3.007 × 10-5 B) 3.007 × 105 C) 3.007 D) 3.007 × 104 E) 3.7 × 10-5 Answer: A 16) Express the number 1.06 × 10-4 in standard notation. A) 10,600 B) 106 C) 0.0106 D) 0.000106 Answer: D 17) The United States has the unit of currency dollars (unit symbol: $). Which of the following is a proper expression of the value seventy seven hundred dollars +/- 1 dollar? A) $ 7.7 × 10+4 B) $ 7.7 × 10+3 C) $ 7700 D) $ 7.700 × 10+3 Answer: D 18) By how many places must the decimal point of the number 0.0000814 be moved in order to express this same number in a standard scientific notation? A) 4 B) 5 C) 6 D) 7 Answer: B 19) For the final sum of 544.36 + 455.64, the number of significant figures is ________. A) 6 B) 5 C) 4 D) 2 E) 1 Answer: A Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures. 20) The correct answer for the operation (5.61 + 7.891 ) / 9.1 is ________. A) 4.86 B) 4.8646714 C) 1.5 D) 5.0 Answer: C Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures and 2.9 Correctly multiply or divide numbers according to the rules of significant figures. 21) Using the rules of significant figures, calculate the following: 14.8903 - 2.14 = A) 12.750 B) 12.75 C) 13 D) 12.7503 E) 12 Answer: B Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures. 22) The sum for the operation 1.2315 + 0.116 + 15.10 is ________. A) 16 B) 16.4 C) 16.45 D) 16.4475 Answer: C Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures. 23) Which of the following operations will give an answer of 50.1? A) 29.75 + 20.3 B) 58.23 - 8.1 C) 26.255 × 1.91 D) all of the above Answer: D Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures and 2.9 Correctly multiply or divide numbers according to the rules of significant figures. 24) Which of the following operations will not give an answer of 73.3? A) 63.75 × 1.15 B) 90.0 - 16.67 C) 60.15 + 13.26 D) 12.161 × 6.03 Answer: C Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures and 2.9 Correctly multiply or divide numbers according to the rules of significant figures. 25) The correct answer in the operation below is ________. (30.004 cm × 14.01 g) / 6.08 cm2 A) 69.1375 g/cm B) 69.14 g/cm C) 69.1 g/cm D) 69.138 g/cm Answer: C Section: Section 2.5 Learning Outcome: 2.9 Correctly multiply or divide numbers according to the rules of significant figures. 26) Which of the following is defined as the quantity of matter in a sample that is independent of where it is measured? A) weight B) mass C) volume D) both A and B Answer: B 27) Which of the following is not an SI unit that is used in chemistry? A) s B) K C) kg D) quart Answer: D Learning Outcome: 2.10a Identify the common SI units used by science. 28) Which is the SI unit for mass? A) kilogram B) pound C) gram D) ounce Answer: A Learning Outcome: 2.10a Identify the common SI units used by science. 29) Which is the SI unit for temperature? A) Fahrenheit B) Celsius C) Kelvin D) either A or C Answer: C Learning Outcome: 2.10a Identify the common SI units used by science. 30) Which is the SI unit for length? A) meter B) inch C) kilometer D) mile Answer: A Learning Outcome: 2.10a Identify the common SI units used by science. 31) Which is the SI unit for time? A) year B) day C) minute D) second Answer: D Learning Outcome: 2.10a Identify the common SI units used by science. 32) Which is a derived SI unit? A) J B) m C) K D) s Answer: A Learning Outcome: 2.10a Identify the common SI units used by science. 33) Which is not a derived SI unit? A) Pa B) J C) C D) s Answer: D Learning Outcome: 2.10a Identify the common SI units used by science. 34) The prefix used to indicate 10-12 is ________. A) micro- B) nano- C) pico- D) giga- Answer: C 35) What is the prefix for the multiplier 1 × 106? A) micro- B) nano- C) mega- D) kilo- Answer: C 36) What is the prefix for the multiplier 1 × 10-6? A) micro- B) nano- C) mega- D) kilo- Answer: A 37) 10 millimeters are equal to ________ nanometers. A) 107 B) 10-7 C) 103 D) 10-3 Answer: A 38) How many kilograms are in 452 mg? A) 4.52 × 10-7 kg B) 4.52 × 10-4 kg C) 0.452 kg D) 4.52 × 108 kg Answer: B 39) 465.000 g is equivalent to ________. A) 0.0465 kg B) 465,000 mg C) 4.65 kg D) 465,000 ng Answer: B 40) Which of the following numbers expresses the value 2600. calories with both the correct units and proper scientific notation? A) 2.6 × 104 kcal B) 2.600 × 103 cal C) 2.60 × 103 mcal D) 26 × 102 dcal Answer: B 41) In order to convert 121 dm to mm one needs to multiply by ________. A) 107 B) 102 C) 10-2 D) 10-5 Answer: B 42) Which of the following does not measure temperature? A) °C B) °F C) K D) J Answer: D 43) 68 °F is equal to ________. A) 37 °C B) 32 °C C) 25 °C D) 20. °C Answer: D 44) 40. °C is equal to ________ K. A) 313 B) 293 C) 263 D) 233 Answer: A 45) A liquid boils at 68 °F at one atmosphere pressure. This is equal to ________ K. A) 341 B) 205 C) 253 D) 293 Answer: D 46) Which is the lowest temperature? A) 40 °C B) 104 °F C) 313 K D) All of them are about the same. Answer: D 47) Which of the following is the hottest temperature? A) 90 °C B) 104 °F C) 353 K D) All of the above are the same. Answer: A 48) Which of the following is coldest temperature? A) -40 °C B) -40 °F C) 210 K D) All of the above are the same. Answer: C 49) The correct order of decreasing temperatures in the set below is ________. A) 18 °C > 80 °F > 280 K B) 280 K > 18 °C > 80 °F C) 80 °F > 18 °C > 280 K D) 80 °F > 280 K > 18 °C Answer: C 50) Which of the following temperatures are not possible? A) 2000 °C B) -425 °F C) -425 °C D) 5 K Answer: C 51) The units of density for a liquid are usually expressed as ________. A) g/mL B) g/L C) mg/mL D) mg/L Answer: A Section: Section 2.7 52) What is the density of a piece of wood that weighs 62 grams and displaces 0.525 L of water? A) 120 g/mL B) 0.12 g/mL C) 0.0080 g/mL D) 8.5 g/mL Answer: B 53) If the density of aluminum is 2.70 g/ cm3, the mass of 10.0 cm3 of this material is ________. A) 27.0 g B) 2.70 g C) 3.70 g D) 0.270 g Answer: A Section: Section 2.7 54) The density of a 4.0 cm3 sample of a metal is 11.3 g/cm3. What is the density of 8.0 cm3 sample of the same metal? A) 11.3 g/ mL B) 22.6 g/ mL C) 5.65 g/ mL D) 2.0 g/ mL Answer: A Section: Section 2.7 55) A popular science demonstration is to take several liquids that will not mix together and "stack" these liquids in a tall glass cylinder. Suppose the following three liquids were placed in the same tall, narrow glass cylinder: SUBSTANCE DENSITY g/mL vinegar 1.01 motor oil 0.87 corn syrup 1.36 The substance that should be placed first in the cylinder so that it is on the bottom is ________. A) vinegar B) motor oil C) corn syrup D) cannot be determined Answer: C Section: Section 2.7 56) The density of copper is about 8.96 g/mL. This means that a certain mass of copper will ________. A) occupy the same volume as the same mass of water B) occupy a volume 8.96 times larger than the volume occupied by the same mass of water C) occupy a volume that is 8.96 times smaller than the volume occupied by the same mass of water D) always occupy a volume of 8.96 mL Answer: C Section: Section 2.7 57) Ethanol has a density of 0.789 g/mL. This means that a certain volume of ethanol will ________. A) weigh more than an equal volume of water B) weigh less than an equal volume of water C) weigh exactly the same as an equal volume of water D) always weigh 0.8 g Answer: B Section: Section 2.7 58) An 80.0 g sample of metal A displaces 20.0 mL of water, while a 56.0 g sample of metal B displaces 14.0 mL of water. The conclusion one may draw from this information is that ________. A) A and B are the same metal B) A and B are not the same metal C) A and B may be the same metal, but more studies are needed to decide if they are the same D) The above results tell us nothing about the nature of A and B. Answer: C Section: Section 2.7 59) 164.0 g of a substance occupy a volume of 120.0 mL. In relation to water, which statement is true? A) The substance will float in water. B) The substance will sink in water. C) The substance will react with water. D) The substance is a metal. Answer: B Section: Section 2.7 60) 20.5 g of a liquid has a volume of 15 mL. What is the density? A) 1 g/mL B) 1.3 g/mL C) 1.4 g/mL D) 1.36 g/mL Answer: C Section: Section 2.7 61) Which statement is true? A) 1 mm = 0.0394 in. B) 1 cm3 = 1 mL C) 1 g = 0.0022 lb D) All of the above are true. Answer: D Section: Section 2.8 62) 5 gallons is equal to ________ quarts. A) 5 B) 10 C) 20 D) 40 Answer: C Section: Section 2.8 63) The closest number of grams that is equivalent to 0.745 lb is ________. A) 338 B) 3.379 C) 0.338 D) 1.64 × 10-3 Answer: A Section: Section 2.8 64) One thousand yards are equivalent to ________. A) 9.14 × 10-2 mm B) 9.14 × 102 m C) 12,000 in D) 1,094 m Answer: B Section: Section 2.8 65) How many moles of copper are present in 128 grams of copper (for copper, 1 mole = 63.546 grams)? A) 0.496 moles B) 8134 moles C) 8.13 × 10-3 moles D) 2.01 moles Answer: D Section: Section 2.8 66) If the speed limit is 60. mi/hr, its equivalent in km/hr is ________. A) 38 B) 97 C) 27 D) 123 Answer: B Section: Section 2.8 67) If the speed limit is 120 km/hr, its equivalent in mi/hr is ________. A) 75 B) 192 C) 133 D) 210 Answer: A Section: Section 2.8 68) A person is 6 ft 10 in tall. This is equivalent to ________ m. A) 2.08 m B) 2.69 m C) 3.22 m D) 1.68 m Answer: A Section: Section 2.8 69) The density of aluminum is 2.7 g/mL. This is equivalent to ________ kg/m3. A) 2.7 × 104 B) 2.7 C) 0.27 D) 2.7 × 103 Answer: D Section: Section 2.8 70) How many cm2 are there in 5.20 in2? A) 33.5 B) 13.2 C) 2.05 D) 0.806 Answer: A Section: Section 2.8 71) The distance of the 220-yard race is equivalent to ________ ft. A) 660 B) 2,640 C) 7.92 × 103 D) 73.3 Answer: A Section: Section 2.8 72) The world record for the 100-meter dash is 9.8 s. If the world record holding runner could maintain the same pace when running five kilometers, he would cover the distance in ________. A) 9.8 min B) 8.2 min C) 1.6 min D) 5.1 min Answer: B Section: Section 2.8 73) Which of the following is the shortest? A) 18 inches B) 0.58 m C) 580 mm D) 1.9 ft Answer: A Section: Section 2.8 74) Which of the following has the greatest mass? A) 4.4 lb B) 2.0 kg C) 165 oz D) 2.0 × 103 g Answer: C Section: Section 2.8 75) The dietary energy requirement for an adult is 2000 kcal per day. This is equivalent to ________. A) 478 J B) 8.37 J C) 47.8 kJ D) 8.37 × 103 kJ Answer: D 0 76) 20.9 kJ is equal to ________ kcal. A) 5,000 B) 5.00 C) 873.6 D) 20 Answer: B 0 77) Convert 250.0 kcal to Joules. A) 250.0 J B) 5.975 × 104 J C) 1.046 × 106 J D) 1.046 × 103 J Answer: C 0 78) 500 cal are added to 10 g of water (specific heat of 1.000 cal/g °C) originally at 20 °C. The final temperature is ________. A) 70 °C B) 50 °C C) 25 °C D) 22.5 °C Answer: A 79) 10. g of a certain metal absorb 40. cal of heat and the temperature is observed to rise from 20. °C to 60. °C. The specific heat of this metal is ________ cal/g °C. A) 0.050 B) 0.10 C) 0.16 D) 0.40 Answer: B 80) 100. cal of heat are added to 10 g of ethanol (0.581 cal/g °C) originally at 15 °C. The final temperature is ________. A) 17 °C B) 27 °C C) 32 °C D) 38 °C Answer: C 81) How many Joules of heat are required to raise the temperature of 35 mL of water from 25 °C to 100 °C? A) 630 J B) 2.6 × 103 J C) 1.1 × 104 J D) 1.0 × 103 J Answer: C 82) Which of the following statements about energy is correct? A) Energy is the ability to do work. B) When energy is absorbed by a system, its temperature increases. C) Heat energy may be converted to work. D) All of the above are correct. Answer: D 83) The specific heat of water is higher than that of iron. Which of the following statements is correct? A) The energy needed to heat iron to a certain temperature is less than the energy needed to raise the water temperature to the same level. B) If the same quantity of energy is applied to both water and iron, iron's temperature will be much higher. C) Iron is a better heat conductor. D) All of the above statements are correct. Answer: D 84) Which of the following is not a conversion factor? A) speed B) density C) energy D) specific heat Answer: C 85) Which of the following is a conversion factor? A) mass B) density C) volume D) time Answer: B 2.2 True/False Questions 1) Precision refers to how close the measured result is to the true value. Answer: FALSE 2) The measured value 12.011 can be assumed to be accurate to +/- 0.001. Answer: TRUE 3) The commonly quoted distance from the earth to the sun (93,000,000 miles) is accurate to only miles. Answer: TRUE Global Obj: G1 Demonstrate an understanding of the principles of scientific inquiry and G5 Demonstrate an understanding of the impact of science on society. 4) Leading zeros are all the zeros that follow the first non-zero digit. Answer: FALSE 5) When determining the number of significant figures in a number, leading zeros are not significant. Answer: TRUE 6) When determining the number of significant figures in a number, trailing zeros are not significant. Answer: FALSE 7) Trailing zeros are also called place-holding zeros. Answer: FALSE 8) When adding or subtracting measured numbers, the answer contains no more significant figures than the number with the least number of significant figures being added or subtracted. Answer: TRUE Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures. 9) The correct answer for the product (2.150 × 12.2) is 26.23. Answer: FALSE Section: Section 2.5 Learning Outcome: 2.8 Correctly add or subtract numbers according to the rules of significant figures. 10) Coulomb is the derived SI unit that measures electrical charge. Answer: TRUE Learning Outcome: 2.10a Identify the common SI units used by science. 11) Joule is the derived SI unit that measures energy. Answer: TRUE Learning Outcome: 2.10a Identify the common SI units used by science. 12) The derived SI unit for pressure is cubic inches. Answer: FALSE Learning Outcome: 2.10a Identify the common SI units used by science. 13) 1 kilowatt is equal to 10,000 watts. Answer: FALSE 14) 2 × 10-3 meters is equal to 2 kilometers. Answer: FALSE 15) One meter is equal to 1 million micrometers. Answer: TRUE 16) The prefix micro- indicates one millionth. Answer: TRUE 17) The prefix pico- indicates one billionth. Answer: FALSE 18) One mL is equal to 1 cc. Answer: TRUE 19) A pound of feathers really does not weigh more than a pound of gold. Answer: TRUE Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 20) 0 K is equal to -273.15 °C. Answer: TRUE 21) -40 °C is equivalent to -40 °F. Answer: TRUE 22) 40 °C is equivalent to 40 °F. Answer: FALSE 23) There has never been recorded a negative Kelvin temperature. Answer: TRUE 24) The Kelvin temperature is not always higher than the equivalent Celsius temperature. Answer: FALSE 25) The Fahrenheit temperature is always numerically higher than the equivalent Celsius temperature. Answer: FALSE 26) Density is an extensive property of matter the more of a given substance you have, the more dense it becomes. Answer: FALSE Section: Section 2.7 27) Oil "floats" on water because oil weighs less than water. Answer: FALSE Section: Section 2.7 Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 28) Oil "floats" on water because oil is less dense than water. Answer: TRUE Section: Section 2.7 Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 29) Density units may be in lb/ gallon. Answer: TRUE Section: Section 2.7 30) The fact that ice has a lower density than liquid water is advantageous to marine life. Answer: TRUE Section: Section 2.7 Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 31) Salt water has a density that is less than 1 g/mL. Answer: FALSE Section: Section 2.7 Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 32) Ice always occupies a smaller volume than water. Answer: FALSE Section: Section 2.7 Global Obj: G2 Demonstrate the ability to think critically and employ critical thinking skills and G5 Demonstrate an understanding of the impact of science on society. 33) Density is a conversion factor. Answer: TRUE Section: Section 2.8 34) One week contains 604,800 seconds. Answer: TRUE Section: Section 2.8 Global Obj: G4 Demonstrate the quantitative skills needed to succeed in chemistry and G5 Demonstrate an understanding of the impact of science on society. 35) There are 4 pints in a gallon. Answer: FALSE Section: Section 2.8 Global Obj: G4 Demonstrate the quantitative skills needed to succeed in chemistry and G5 Demonstrate an understanding of the impact of science on society. 36) Specific heat may be measured as cal. g/°C. Answer: FALSE 0 37) A substance that may be a good heat conductor usually has a low value for specific heat. Answer: TRUE 0 38) Water is a good heat conductor. Answer: FALSE 0 39) When heat is absorbed the temperature of the system increases. Answer: TRUE 0 40) Temperature changes that may be used for energy difference calculations are measured through a bomb calorimeter. Answer: TRUE 0 41) One Cal of energy used by dieticians and the food industry is equal to 4.184 joules. Answer: FALSE 0 42) One Cal is equal to 1 kcal. Answer: TRUE 0 2.3 Short Answer Questions 1) How many significant digits are there in the number 740.2? Answer: 4 2) How many significant digits are there in the number 0.0038040? Answer: 5 3) What is the Greek prefix and abbreviation which signifies one thousand? Answer: k, for kilo 4) Convert 16.8 meters to: a) millimeters, b) centimeters, c) kilometers. Answer: a) 16,800 mm b) 1,680 cm c) 0.0168 km 5) Convert 65 °F, a cool summer's daytime temperature, to: a) degrees Celsius. b) absolute temperature (Kelvin). Answer: a) 18 °C b) 291 K 6) What is the density, in g/mL, of a piece of metal that weighs 0.408 kg and displaces 0.0297 L of water? Answer: d = 13.7 g/mL Section: Section 2.7 7) Convert 302 cubic inches to liters (1 inch = 2.54 centimeters). Show the math. Answer: (302 in3) × (2.54 cm/1 in)3 × (1 mL/1 cm3) × (1 L/1000 mL) = 4.95 L Section: Section 2.8 8) Convert 15.0 ft3 to m3. Show the math. Answer: (15.0 ft3) × (12 in/1 ft)3 × (2.54 cm/1 in)3 × (1 m/100 cm)3 = 0.425 m3 Section: Section 2.8 9) It is 1148 miles from Grand Rapids, Michigan, to Starkville, Mississippi. What is the same distance in kilometers (1 mile = 1.61 kilometers)? Answer: 1850 kilometers (although it seems much longer by car) Section: Section 2.8 10) Calculate the approximate distance (in km) between earth and sun, given that the speed of light is about and that it takes about 8.5 minutes for sunlight to reach earth. Answer: (3 × 1010 cm/s) × (60 s/min) × (8.5 min) × (1 m/100 cm) × (1 km/1,000 m) = 1.5 × 108 km Section: Section 2.8 11) Solve the equation 4x + 3y = 246 for the x-variable, and report the value for x when y = 2.36. Answer: (246 - 3y)/4 = x; when y = 2.36, x = 59.7 Section: Section 2.9 12) Solve the equation PV = nRT for the n-variable. Answer: n = (PV)/(RT) Section: Section 2.9 13) Calculate the amount of energy needed to raise the temperature of 25 mL ethanol (density = 0.80 g/mL) from 10.0 °C to 20.0 °C (c = 0.581 cal/g°C) both in cal and joules. Answer: Density = mass/ volume; mass of ethanol = 0.80 × 25 = 20. g; Heat = mass × specific heat × difference in temperature = 20. × 0.581 × 10 = 120 cal = 490 joules 0 2.4 Matching Questions Match the correct number of significant figures from the second column with each of the numbers in the first column. A) 7 B) 3 C) 2 D) 6 E) 5 F) 4 G) 1 1) 2.456 × 10-3 Learning Outcome: 2.4 Identify leading zeros and trailing zeros in a measured number. 2) 0.00201 3) 34.3004 4) 0.40001 5) 4.0 6) 0.7 7) 0.02 8) 5.2406 9) 8.901070 10) 0.002003 11) 5000 12) 5000. Answers: 1) F 2) B 3) D 4) E 5) C 6) G 7) G 8) E 9) A 10) F 11) G 12) F Match the correct scientific notation from column 2 with the standard notation provided in column 1. A) 1.570 x 100 B) 1.570 x 101 C) 1.570 x 10-3 D) 1.570 x 10-2 13) 15.70 Section: Learning Outcome: Section 2.4 2.6 Convert a number from standard to scientific notation and vice versa. 14) 1.570 15) 0.001570 16) 0.01570 Answers: 13) B 14) A 15) C 16) D Match each temperature in column 1 with the equivalent different scale temperature in column 2. A) 0. °C B) 280 K C) 68 °F D) 100. °C E) -40 °F F) 32 °F G) 98.6 °F H) -273 °C I) -17.8 °C 17) 20. °C Learning Outcome: 2.13d Algebraically rearrange a mathematical equation to solve it for a desired variable. 18) 273 K Learning Outcome: 2.13d Algebraically rearrange a mathematical equation to solve it for a desired variable. 19) 40. °F 20) 0.00 °F 21) 0 °C 22) 310 K 23) -40 °C 24) 212 °F 25) 0 K Answers: 17) C 18) A 19) B 20) I 21) F 22) G 23) E 24) D 25) H Match a unit from the first column with a measurement from the second column. A) time B) energy C) electrical charge D) mass E) length F) volume G) temperature H) density 26) mg 27) s 28) ft 29) km 30) qt 31) mL 32) lb 33) gallon 34) m3 35) in 36) K 37) °F 38) °C 39) Joule 40) C 41) g/L 42) lb/qt 43) Cal Answers: 26) D 27) A 28) E 29) E 30) F 31) F 32) D 33) F 34) F 35) E 36) G 37) G 38) G 39) B 40) C 41) H 42) H 43) B Match an exponential from the right column with each prefix in the left column. A) 10+3 B) 10-1 C) 10+9 D) 10-12 E) 10-3 F) 10+6 G) 10-6 H) 10-9 I) 10-2 44) giga- 45) nano- 46) centi- 47) milli- 48) micro- 49) kilo- 50) pico- 51) deci- 52) mega- Answers: 44) C 45) H 46) I 47) E 48) G 49) A 50) D 51) B 52) F Match each unit in the left column with another unit of the same physical measurement that appears in the right column. A) joule B) lb/qt C) °C D) gallon E) km F) lb 53) g 54) ton 55) quart 56) cal 57) K 58) g/mL 59) mile 60) cup 61) oF 62) yd 63) cm3 Answers: 53) F 54) F 55) D 56) A 57) C 58) B 59) E 60) D 61) C 62) E 63) D Choose the number in the second column that correctly fills the blank in each item in the first column. A) 36 B) 0.556 C) 454 D) 8 E) 1,000,000 F) 1,000 G) 1 H) 2.54 I) 4.184 J) 16 64) One kg is equal to ________ g. 65) One degree Fahrenheit is equal to _____°C. 66) One Kelvin is equal to _____°C. 67) One kilometer is equal to ________ mm. 68) One pound is equal to ________ g. 69) One gallon is equal to ________ pints. 70) One yard is equal to ________ inches. 71) One inch is equal to ________ cm. 72) One pound is equal to ________ oz. 73) One cal is equal to ________ J. Answers: 64) F 65) B 66) G 67) E 68) C 69) D 70) A 71) H 72) J 73) I