Question 1

How many significant figures are in the measurement 210 g?

Accepted Answer

A)  2 
B)  1 
C)  3 
D)  4 
E)  5 
A)  2 
B)  1 
C)  3 
D)  4 
E)  5

Question 2

How many mm are in 3.20 cm?

Accepted Answer

A)  3.20 × 101 mm 
B)  3.20 × 10-1 mm 
C)  3.20 × 10-2 mm 
D)  3.20 × 102 mm 
E)  3.20 × 103 mm 
A)  3.20 × 101 mm 
B)  3.20 × 10-1 mm 
C)  3.20 × 10-2 mm 
D)  3.20 × 102 mm 
E)  3.20 × 103 mm

Question 3

If the temperature is 178 °F, what is the temperature in degrees Celsius?

Accepted Answer

A)  352 °C 
B)  451 °C 
C)  67 °C 
D)  81.1 °C 
E)  378 °C 
A)  352 °C 
B)  451 °C 
C)  67 °C 
D)  81.1 °C 
E)  378 °C

Question 4

What answer should be reported, with the correct number of significant figures, for the following calculation? log(4.28 × 103) - 1

Accepted Answer

A)  2.63144 
B)  2.6314 
C)  2.631 
D)  2.6 
E)  3 
A)  2.63144 
B)  2.6314 
C)  2.631 
D)  2.6 
E)  3

Question 5

How many dm are in 345 dam?

Accepted Answer

A)  0.345 dm 
B)  3.45 dm 
C)  3450 dm 
D)  34500 dm 
E)  345000 dm 
A)  0.345 dm 
B)  3.45 dm 
C)  3450 dm 
D)  34500 dm 
E)  345000 dm

Question 6

On a cold winter day, the temperature was -15 °C. What is the temperature in K?

Accepted Answer

A)  288.15 K 
B)  238.15 K 
C)  258.15 K 
D)  400.15 K 
E)  283.15 K 
A)  288.15 K 
B)  238.15 K 
C)  258.15 K 
D)  400.15 K 
E)  283.15 K

Question 7

A solution has a temperature of 68 °C. What is the temperature in K?

Accepted Answer

A)  427 K 
B)  20 K 
C)  154 K 
D)  341 K 
E)  296 K 
A)  427 K 
B)  20 K 
C)  154 K 
D)  341 K 
E)  296 K

Question 8

Choose the compound from the list below.

Accepted Answer

A)  magnesium 
B)  water 
C)  neon 
D)  helium 
E)  lithium 
A)  magnesium 
B)  water 
C)  neon 
D)  helium 
E)  lithium

Question 9

Convert 46.9 GHz to THz.

Accepted Answer

A)  0.0469 THz 
B)  46900 THz 
C)  0.469 THz 
D)  4690 THz 
E)  0.000469 THz 
A)  0.0469 THz 
B)  46900 THz 
C)  0.469 THz 
D)  4690 THz 
E)  0.000469 THz

Question 10

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide. What is this distance in millimeters?

Accepted Answer

A)  1.15 × 10-8 mm 
B)  1.15 × 10-7 mm 
C)  1.15 × 1013 mm 
D)  1.15 × 1017 mm 
A)  1.15 × 10-8 mm 
B)  1.15 × 10-7 mm 
C)  1.15 × 1013 mm 
D)  1.15 × 1017 mm

Question 11

Convert 4392 m3 to hm3.

Accepted Answer

A)  4.392 × 10-5 hm3 
B)  4.392 × 10-3 hm3 
C)  4.392 × 10-1 hm3 
D)  4.392 × 101 hm3 
E)  4.392 × 102 hm3 
A)  4.392 × 10-5 hm3 
B)  4.392 × 10-3 hm3 
C)  4.392 × 10-1 hm3 
D)  4.392 × 101 hm3 
E)  4.392 × 102 hm3

Question 12

What symbol is used to represent the factor 101?

Accepted Answer

A)  M 
B)  da 
C)  μ 
D)  n 
A)  M 
B)  da 
C)  μ 
D)  n

Question 13

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 185-pound man?

Accepted Answer

A)  1.2 kg Ca 
B)  5.7 kg Ca 
C)  1.2 × 102 kg Ca 
D)  5.7 × 102 kg 
A)  1.2 kg Ca 
B)  5.7 kg Ca 
C)  1.2 × 102 kg Ca 
D)  5.7 × 102 kg

Question 14

A person has a mass of 103.5 pounds. What is her weight in kg?

Accepted Answer

A)  78.31 kg 
B)  70.21 kg 
C)  46.95 kg 
D)  62.45 kg 
A)  78.31 kg 
B)  70.21 kg 
C)  46.95 kg 
D)  62.45 kg

Question 15

How many litres of air are in a room that measures  11.0 ft x 12.0 ft and has an 7.00 ft ceiling? (1 in.=2.54 cm (exactly);  1 L=103 cm3)

Accepted Answer

A)  2.62 × 104 
B)  2347.0 
C)  28.2 
D)  2.82 × 107 
E)  9.24 × 105 
A)  2.62 × 104 
B)  2347.0 
C)  28.2 
D)  2.82 × 107 
E)  9.24 × 105

Question 16

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $ 15.84 each, two paint brushes at $ 4.68 each, and $ 152 for a helper. The total estimated cost with the appropriate significant figures is $________.

Accepted Answer

A)  208.88 
B)  2.1 × 102 
C)  209 
D)  208.9 
A)  208.88 
B)  2.1 × 102 
C)  209 
D)  208.9

Question 17

On a cold winter day, the outside temperature is reported as being -35 °C. What is the temperature in K?

Accepted Answer

A)  98.15 K 
B)  238.15 K 
C)  308.15 K 
D)  400.15 K 
E)  283.15 K 
A)  98.15 K 
B)  238.15 K 
C)  308.15 K 
D)  400.15 K 
E)  283.15 K

Question 18

How many cubic metres (m3) are in 240 cubic feet? (1 m = 3.28084 feet)

Accepted Answer

A)  73.2 m3 
B)  12.7 m3 
C)  22.3 m3 
D)  6.80 m3 
E)  2.08 m3 
A)  73.2 m3 
B)  12.7 m3 
C)  22.3 m3 
D)  6.80 m3 
E)  2.08 m3

Question 19

An unknown metal is heated to 850 °F. What is the temperature in K?

Accepted Answer

A)  1350 K 
B)  1120 K 
C)  460 K 
D)  540 K 
E)  730 K 
A)  1350 K 
B)  1120 K 
C)  460 K 
D)  540 K 
E)  730 K

Question 20

Which of the following statements about the phases of matter is TRUE?

Accepted Answer

A)  In both solids and liquids, the atoms or molecules pack closely to one another. 
B)  Solids are highly compressible. 
C)  Gaseous substances have long-range repeating order. 
D)  There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. 
E)  Liquids have a large portion of empty volume between molecules. 
A)  In both solids and liquids, the atoms or molecules pack closely to one another. 
B)  Solids are highly compressible. 
C)  Gaseous substances have long-range repeating order. 
D)  There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. 
E)  Liquids have a large portion of empty volume between molecules.

Exam 1: Units of Measurement for Physical and Chemical Change

How many significant figures are in the measurement 210 g?

How many mm are in 3.20 cm?

If the temperature is 178 °F, what is the temperature in degrees Celsius?

What answer should be reported, with the correct number of significant figures, for the following calculation? log(4.28 × 103) - 1

How many dm are in 345 dam?

On a cold winter day, the temperature was -15 °C. What is the temperature in K?

A solution has a temperature of 68 °C. What is the temperature in K?

Choose the compound from the list below.

Convert 46.9 GHz to THz.

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide. What is this distance in millimeters?

Convert 4392 m3 to hm3.

What symbol is used to represent the factor 101?

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 185-pound man?

A person has a mass of 103.5 pounds. What is her weight in kg?

How many litres of air are in a room that measures 11.0 ft x 12.0 ft and has an 7.00 ft ceiling? (1 in.=2.54 cm (exactly); 1 L=103 cm3)

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $ 15.84 each, two paint brushes at $ 4.68 each, and $ 152 for a helper. The total estimated cost with the appropriate significant figures is $________.

On a cold winter day, the outside temperature is reported as being -35 °C. What is the temperature in K?

How many cubic metres (m3) are in 240 cubic feet? (1 m = 3.28084 feet)

An unknown metal is heated to 850 °F. What is the temperature in K?

Which of the following statements about the phases of matter is TRUE?

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

What answer should be reported, with the correct number of significant figures, for the following calculation? log(4.28 × 10³) - 1

Convert 4392 m³ to hm³.

What symbol is used to represent the factor 10¹?

How many litres of air are in a room that measures 11.0 ft x 12.0 ft and has an 7.00 ft ceiling? (1 in.=2.54 cm (exactly); 1 L=10³ cm³)

How many cubic metres (m³) are in 240 cubic feet? (1 m = 3.28084 feet)