Test Bank all Chapter, Correct Answer

Chemistry 2e Paul Flowers, Klaus Theopold, Richard Langley, William Robinson

(Test Bank all Chapter, Correct Answer Marked with *) (There is no test bank for chapter 15, 19 and 21. These 3 chapters test bank is not provided by the author.)

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OpenStax Chemistry Supplemental Test Items

Chapter 01: Essential Ideas

Page 1 of 8 Credit: Modification of assessment items provided by Lumen Learning, with generous funding from the William and Flora Hewlett Foundation. Licensed Creative Commons Attribution 4.0.

Chapter 01: Essential Ideas

• A 0.150 kg metallic block measures 25.0 mm in length, 43.0 mm in width, and 19 .0 mm in

height. What is the density of the metallic block in g/cm 3 ? (Outcome # 3) (DOK 2)

• 7.34 x 10

-6 g/cm 3

• 7.34 x 10

-3 g/cm 3

• 7.34 g/cm

3 *

• An object with a mass of 0.255 kg and density of 2.89 g/cm

3 measures 34 mm in length and 46 mm in width. What is the height of the object? (Outcome # 3) (DOK 3)

• 5.6 cm*
• 5.6 x 10

-2 cm

• 7.2 x 10

-4 cm

• How would you determine the density of an irregular object? (Outcome # 3) (DOK 3)
• It would be impossible to determine the mass of the object without more

information.

• D = m/v, so measure the mass of the object using a balance. Then to find volume,

measure the height, width, and length using an appropriate measuring tool.

• D = m/v, so measure the mass of the object using a balance. Then to find volume, fill

a graduated cylinder with a known amount of water and immerse the object in the water. The amount of displaced water is the volume in cm 3 or mL.*

• What is the base unit for length in the metric system? (Outcome # 6) (DOK 1)
• m*
• km
• mm
• What is the base unit for mass in the metric system? (Outcome # 6) (DOK 1)
• kg
• g*
• mg
• What is the base unit for volume in the metric system? (Outcome # 6) (DOK 1)
• L*
• mL
• dL
• It is important that scientists use units that are understood on a global level. These units are

referred to as SI units which stands for _____. (Outcome # 6) (DOK 1)

• standard international units
• standard intercontinental units
• international system of units* 2 / 4

OpenStax Chemistry Supplemental Test Items

Chapter 01: Essential Ideas

Page 2 of 8 Credit: Modification of assessment items provided by Lumen Learning, with generous funding from the William and Flora Hewlett Foundation. Licensed Creative Commons Attribution 4.0.

• Convert 18.50 ft to the SI unit for length. (Outcome # 6) (DOK 2)
• 563.9 cm
• 5.639 m*
• 0.005639 km
• An experimental mouse weighs about 4.41 x 10

-2 lbs. What would the weight be in the SI unit for mass? (Outcome # 6) (DOK 2)

• 20.0 g
• 0.0200 kg*
• 20,003 mg
• Accuracy is defined as how close a measured value comes to a _____. (Outcome # 6) (DOK

1)

• core value
• fixed value
• true value*
• Precision is defined as how _____ the measured values are to one another. (Outcome # 6)

(DOK 1)

• common
• reproducible*
• accurate
• An experiment requires you to make several measurements. Based on the values in the

table below, what would be the best statement that represents the data set if the true value is 0.2135? (Outcome # 11) (DOK 2) Trial A Trial B Trial C

0.2139 0.2893 0.2135

0.2130 0.3210 0.2134

0.2133 0.2999 0.3712

0.2135 0.2998 0.3715

• The measurements in Trial A are accurate and precise, Trial B is neither accurate nor

precise, and Trial C is accurate however, not precise.

• The measurements in Trial A are accurate and precise, Trial B is neither accurate nor

precise, and Trial C is precise however, not accurate.

• The measurements in Trial A are accurate and precise, Trial’s B and C are neither

accurate nor precise.*

• An experiment requires you to make several measurements. Based on the values in the

table below, what would be the best statement that represents the data set if the true value is 2.73? (Outcome # 11) (DOK 2) (Paired item 1) Trial A Trial B Trial C 3 / 4

OpenStax Chemistry Supplemental Test Items

Chapter 01: Essential Ideas

Page 3 of 8 Credit: Modification of assessment items provided by Lumen Learning, with generous funding from the William and Flora Hewlett Foundation. Licensed Creative Commons Attribution 4.0.

2.73 3.00 2.77

3.05 3.03 2.79

3.09 2.99 3.31

2.44 3.01 2.05

• The measurements in Trial B are precise, however, not accurate. Trial’s A and C are

neither accurate nor precise.*

• The measurements in Trial B are accurate, however, not precise. Trial’s A and C are

neither accurate nor precise.

• The measurements in Trial’s A, B, and C are neither accurate nor precise.
• Which of the following would be considered a chemical change? (Outcome # 9) (DOK 1)
• a rusting nail*
• melting ice
• crushing an aluminum can
• Which of the following would be considered a physical change? (Outcome # 9) (DOK 1)
• digesting food
• burning paper
• boiling water*
• A salt water solution is classified as what type of matter? (Outcome # 9) (DOK 1)
• homogeneous mixture*
• heterogeneous mixture
• pure substance
• How many significant figures are in 0.0000401 kg? (Outcome # 5) (DOK 1)
• 3*
• 7
• 2
• How many significant figures are in 0.20 L? (Outcome # 5) (DOK 1) (Paired item 1)
• 3
• 1
• 2*
• Express 1.40 x 10

-3 L in decimal notation. (Outcome # 5) (DOK 1)

A. 0.00140 L*

B. 0.0014 L

C. 0.001 L

• What is the answer for the following calculation: (1.249 - 0.0234) x 139.37? (Outcome # 5)

(DOK 2)

A. 170.812

B. 170.8*

• 170.81
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