Question 1

A gas phase mixture has a temperature of 643 °C. Calculate the temperature in K.

Accepted Answer

A) 916 K 
B) 873 K 
C) 188 K 
D) 1391 K 
E) 370 K 
A) 916 K 
B) 873 K 
C) 188 K 
D) 1391 K 
E) 370 K

Question 2

Identify the common substance that has the lowest density.

Accepted Answer

A) ice 
B) aluminum 
C) copper 
D) table salt 
E) sugar 
A) ice 
B) aluminum 
C) copper 
D) table salt 
E) sugar

Question 3

What answer should be reported, with the correct number of significant figures, for the following calculation?   × 12.3

Accepted Answer

A) 1.16 
B) 1 
C) 1.162 
D) 1.1621 
E) 1.2 
A) 1.16 
B) 1 
C) 1.162 
D) 1.1621 
E) 1.2

Question 4

How many litres of air are in a room that measures 10.0 ft x 11.0 ft and has an 8.00 ft ceiling? (1 in. =2.54 cm (exactly); 1 L= 103 cm3)

Accepted Answer

A) 2.49 ×   
B) 92.8 
C) 26.8 
D) 2.68 ×   
E) 8.84 × 105 
A) 2.49 ×   
B) 92.8 
C) 26.8 
D) 2.68 ×   
E) 8.84 × 105

Question 5

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 6

A physical change

Accepted Answer

A) occurs when iron rusts. 
B) occurs when sugar is heated into caramel. 
C) occurs when glucose is converted into energy within your cells. 
D) occurs when water is evaporated. 
E) occurs when propane is burned for heat. 
A) occurs when iron rusts. 
B) occurs when sugar is heated into caramel. 
C) occurs when glucose is converted into energy within your cells. 
D) occurs when water is evaporated. 
E) occurs when propane is burned for heat.

Question 7

What answer should be reported, with the correct number of significant figures, for the following calculation?
 1.682 × 10-3 + 4.311 × 10-2

Accepted Answer

A) 4.44792 × 10-2 
B) 4.44792 × 10-3 
C) 4.48 × 10-2 
D) 4.479 × 10-3 
E) 4.479 × 10-2 
A) 4.44792 × 10-2 
B) 4.44792 × 10-3 
C) 4.48 × 10-2 
D) 4.479 × 10-3 
E) 4.479 × 10-2

Question 8

A person weighs 77.1 kg. What is his weight in pounds?

Accepted Answer

A) 154 pounds 
B) 170 pounds 
C) 35.0 pounds 
D) 162 pounds 
A) 154 pounds 
B) 170 pounds 
C) 35.0 pounds 
D) 162 pounds

Question 9

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 10

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square metres will the oil slick cover?

Accepted Answer

A) 1.9 × 10-3 m2 
B) 1.9 × 106 m2 
C) 1.9 × 107 m2 
D) none of the above 
A) 1.9 × 10-3 m2 
B) 1.9 × 106 m2 
C) 1.9 × 107 m2 
D) none of the above

Question 11

If the outside temperature is 35 °C, what is the temperature in °F?

Accepted Answer

A) 95 °F 
B) 31 °F 
C) 121 °F 
D) 5.4 °F 
E) 63 °F 
A) 95 °F 
B) 31 °F 
C) 121 °F 
D) 5.4 °F 
E) 63 °F

Question 12

What is the area, in m2, of a house that has 1236 square feet of floor space? (1 foot = 0.3048 m)

Accepted Answer

A) 376.7 m2 
B) 214.8 m2 
C) 114.8 m2 
D) 687 m2 
E) 573 m2 
A) 376.7 m2 
B) 214.8 m2 
C) 114.8 m2 
D) 687 m2 
E) 573 m2

Question 13

A substance composed of two or more elements in a fixed, definite proportion is

Accepted Answer

A) a homogeneous mixture. 
B) a heterogeneous mixture. 
C) a compound. 
D) a solution. 
E) an alloy. 
A) a homogeneous mixture. 
B) a heterogeneous mixture. 
C) a compound. 
D) a solution. 
E) an alloy.

Question 14

How many significant figures are in the measurement 463.090 m?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 15

What answer should be reported, with the correct number of significant figures, for the following calculation?

Accepted Answer

A) 0.037 
B) 0.0374 
C) 0.03740 
D) 0.037399 
E) 0.0373995 
A) 0.037 
B) 0.0374 
C) 0.03740 
D) 0.037399 
E) 0.0373995

Question 16

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 17

The factor 10-3 corresponds to which prefix?

Accepted Answer

A) deka 
B) deci 
C) milli 
D) centi 
A) deka 
B) deci 
C) milli 
D) centi

Question 18

Which of the following is the greatest mass?

Accepted Answer

A) 1000 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-4 cg 
D) 1.000 × 10-8 mg 
A) 1000 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-4 cg 
D) 1.000 × 10-8 mg

Question 19

What decimal power does the abbreviation pico represent?

Accepted Answer

A) 1 × 106 
B) 1 × 109 
C) 1 × 10-1 
D) 1 × 10-12 
E) 1 × 10-15 
A) 1 × 106 
B) 1 × 109 
C) 1 × 10-1 
D) 1 × 10-12 
E) 1 × 10-15

Question 20

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

Exam 1: Units of Measurement for Physical and Chemical Change

A gas phase mixture has a temperature of 643 °C. Calculate the temperature in K.

Identify the common substance that has the lowest density.

What answer should be reported, with the correct number of significant figures, for the following calculation? × 12.3

How many litres of air are in a room that measures 10.0 ft x 11.0 ft and has an 8.00 ft ceiling? (1 in. =2.54 cm (exactly); 1 L= 103 cm3)

What symbol is used to represent the factor 101?

A physical change

What answer should be reported, with the correct number of significant figures, for the following calculation? 1.682 × 10-3 + 4.311 × 10-2

A person weighs 77.1 kg. What is his weight in pounds?

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

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square metres will the oil slick cover?

If the outside temperature is 35 °C, what is the temperature in °F?

What is the area, in m2, of a house that has 1236 square feet of floor space? (1 foot = 0.3048 m)

A substance composed of two or more elements in a fixed, definite proportion is

How many significant figures are in the measurement 463.090 m?

What answer should be reported, with the correct number of significant figures, for the following calculation?

Convert 46.9 GHz to THz.

The factor 10-3 corresponds to which prefix?

Which of the following is the greatest mass?

What decimal power does the abbreviation pico represent?

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

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 Metallury

Transition Metals and Coordination Compounds

Filters

How many litres of air are in a room that measures 10.0 ft x 11.0 ft and has an 8.00 ft ceiling? (1 in. =2.54 cm (exactly); 1 L= 10³cm³)

What symbol is used to represent the factor 10¹?

What answer should be reported, with the correct number of significant figures, for the following calculation? 1.682 × 10^-3+ 4.311 × 10^-2

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 10² nm thick, how many square metres will the oil slick cover?

What is the area, in m², of a house that has 1236 square feet of floor space? (1 foot = 0.3048 m)

The factor 10^-3 corresponds to which prefix?