Test Bank for Introductory Chemistry 9th Edition: Chapter 02—

A quantitative observation a. contains a number and a unit b. does not contain a number c. always makes a comparison d. must be obtained through experimentation e. is none of these

Which of the following is an example of a quantitative observation? a. The piece of metal is longer than the piece of wood. b. Solution 1 is much darker than solution 2. c. The liquid in beaker A is blue. d. The temperature of the liquid is 60 °C. e. Both a and d are quantitative observations.

A quantitative observation is called a measurement. Is this statement true or false? a. True b. False

Which of the following is an example of a qualitative observation? a. The leaf is 9 cm long. b. The temperature of the room increases by 8 °C. c. The veins are 3 mm wide. d. The weight of the book is 4.5 pounds. e. The plant is short.

Express 1230000 in scientific notation. a. 3.62 × 10–8 b. 1.23 × 10–6 c. 1.23 × 106 d. 123 × 106 e. 123 × 104

Express 30529000 in scientific notation. a. 3 × 107 b. 3.0529 × 107 c. 305 × 107 d. 30529 × 103 e. 305290 × 107

Write 8,323 in standard scientific notation. a. 8323 b. 8.323 × 10–3 c. 832.3 × 101 d. 8.323 × 1000 e. 8.323 × 103

The number 0.001 expressed in exponential notation is a. 1 × 103 b. 1 × 104 c. 1 × 10–3 d. 1 × 10–4 e. none of these

The number 0.00288 expressed in exponential notation is a. 2.88 × 103 b. 2.88 × 10–2 c. 288 × 103 d. 2.88 × 102 e. 2.88 × 10–3

Express the number 178414 in scientific notation. a. 1.78414 × 10–5 b. 1.78414 × 105 c. 1.78 × 105 d. 178.414 × 103 e. 1.8 × 10–5

The number 200,000 expressed in scientific notation is a. 2.0 × 105 b. 2.0 × 10–5 c. 20 × 104 d. 200 × 103 e. 2 × 105

Express the number 0.00382 in scientific notation. a. 3.82 × 10–3 b. 3.82 × 103 c. 0.382 × 10–3 d. 382 × 10–5 e. none of these

2.7 kilograms contain this many grams. a. 2.7 × 103 b. 2.7 × 102 c. 2.7 × 101 d. 2.7 × 10–2 e. 2.7 × 10–3

How many milliliters are in 0.063 L? a. 0.63 mL b. 6.3 mL c. 6.3 × 102 mL d. 6.3× 101 mL e. 6.3 × 103 mL

The measurement 3.8 g could also be written as _____. a. 3.8 mg b. 3.8 pg c. 3.8 kg d. 3.8 dg

How many millimeters are in 5.62 × 102 centimeters? a. 5.62 × 102 mm b. 5.62 × 101 mm c. 5.62 × 103 mm d. 5.62 mm e. 5.62 × 10–2 mm

Convert: 7.7 mm = _____ km. a. 7.7 × 10–6 b. 7.7 × 10–3 c. 7.7 × 103 d. 7.7 × 106 e. 7.7 × 102

Convert: 91.1 L = _____________ mL. a. 9.11 × 103 mL b. 9.11 × 104 mL c. 9.11 × 10–1 mL d. 9.11 × 10–2 mL e. 9.11 mL

Convert: 8.21 × 102 g = ____________ kg. a. 8.21 × 105 kg b. 8.21 kg c. 0.821 kg d. 8.21 × 104 kg e. 0.0821 kg

Convert: 87.9 cm = ____________ m. a. 8.79 × 103 m b. 8.79 × 104 m c. 0.0879 m d. 0.879 m e. 8.79 m

4.1 milliseconds is equal to how many seconds? a. 4.1 × 103 s b. 4.1 × 102 s c. 4.1 × 10–3 s d. 4.1 × 10–2 s e. 0.41 s

The fundamental unit of length in the metric system is the _____. a. kilometer b. meter c. centimeter d. gram e. milliliter

The number of milligrams in 1.0 kg is a. 1.0 × 103 mg b. 1.0 × 106 mg c. 1.0 × 10–3 mg d. 1.0 × 10–6 mg e. 1.0 × 102 mg

The SI prefix that corresponds to a factor of 10–3 is a. milli b. centi c. deci d. kilo e. none of these

Which metric prefix is used to designate 1/10? a. d b. c c. m d. M e. k

The number of milliliters in 0.0914 liter is a. 9.14 × 10–5 mL b. 91.4 mL c. 9.14 mL d. 914 mL e. 9.14 × 103 mL

Which of the following is an SI unit for expressing the mass of a block of gold? a. m b. g c. L d. pound

A cubic centimeter (cm3) is equivalent to what other metric volume unit? a. milliliter b. liter c. deciliter d. centimeter e. millimeter

Convert: 443.2 mm = ______________ m. a. 4.432 × 105 m b. 4.432 × 104 m c. 4.432 m d. 44.32 m e. 0.4432 m

The number of cubic centimeters (cm3) in 63.7 mL is _____. a. 0.0637 cm3 b. 6.37 cm3 c. 63.7 cm3 d. None of these

Using the rules of significant figures, calculate the following: 30 + 4.207 a. 30 b. 35 c. 34.21 d. 34.207 e. 34

Using the rules of significant figures, calculate the following: 15.9743 - 3.02 a. 12.95 b. 13 c. 12.9543 d. 12.954 e. 12

Calculate the following using the rules of significant figures: 12.67 + 13.005 = a. 25.675 b. 25 c. 20 d. 25.68 e. 26

Using zero as your reference point, how much liquid has left the buret? Use the correct number of significant figures. a. 20 mL b. 22 mL c. 22.0 mL d. 38 mL e. 38.0 mL

20.0 mL of water from a graduated cylinder is added to a beaker of water as shown below. What is the new volume of water in the beaker? a. 40 mL b. 40.0 mL c. 35 mL d. 35.0 mL e. 25.0 mL

How many significant figures are in the number 1.89 × 103? a. 1 b. 2 c. 3 d. 4 e. 5

The number 3.00315 rounded to four significant figures is a. 3 b. 3.004 c. 3.000 d. 3.315 e. none of these

How many significant figures are in the number 60.02 × 105? a. 2 b. 3 c. 4 d. 5 e. None of these

The number 14.809 rounded to three significant figures is _____. a. 15.0 b. 14.9 c. 14.81 d. 14.809 e. 14.8

Round 23,456 to four significant figures.

Round 0.0004583 to three significant figures and express it in scientific notation.

How many significant figures are in the number 34.00500? a. 3 b. 4 c. 5 d. 6 e. 7

How many significant figures are in the number 1000.0? a. 1 b. 2 c. 3 d. 4 e. 5

How many significant figures are in the measurement 12.3004 g? a. 6 b. 5 c. 4 d. 3 e. 2

How many significant figures are in the number 1.20 × 103? a. 1 b. 2 c. 3 d. 4 e. 5

In the sum of 54.34 + 45.66, the number of significant figures is a. 2 b. 3 c. 4 d. 5 e. 6

How many significant figures are in the number 3.400? a. 1 b. 2 c. 3 d. 4 e. 5

The number 243.306 rounded off to five significant figures is _____. a. 243.31 b. 243.36 c. 243.30 d. 243.00 e. None of these

A student finds that the weight of an empty beaker is 16.600 g. She places a solid in the beaker to give a combined mass of 16.629 g. To how many significant figures is the mass of the solid known? a. 2 b. 3 c. 1 d. 5 e. 4

What is the result of the following multiplication expressed in scientific notation to the correct number of significant figures? (5.45 x 103)(6.0 x 10-3) a. b. c. d. e.

How many significant figures are in the number 19.8030? a. 6 b. 5 c. 4 d. 3 e. 2

How many significant figures are in the result of the calculation below? (4.321/2.8) × (6.9234 × 105) a. 1 b. 2 c. 3 d. 4 e. 5

The result of the following calculation has how many significant figures? (0.4333 J/g °C) (33.12°C – 31.12°C)(412.1 g) a. 1 b. 2 c. 3 d. 4 e. 5

How many significant figures are in the number 4.00700 × 1013? a. 2 b. 4 c. 5 d. 6 e. none of these

How many significant figures are in the number 0.02020 × 1015? a. 3 b. 4 c. 5 d. 6 e. 19

How many significant figures are in the measurement 0.2010 g? a. 1 b. 2 c. 3 d. 4 e. 5