Question 1

Molecules can be described as

Accepted Answer

A)  mixtures of two or more pure substances. 
B)  mixtures of two or more elements that has a specific ratio between components. 
C)  two or more atoms chemically joined together. 
D)  heterogeneous mixtures. 
E)  homogeneous mixtures. 
A)  mixtures of two or more pure substances. 
B)  mixtures of two or more elements that has a specific ratio between components. 
C)  two or more atoms chemically joined together. 
D)  heterogeneous mixtures. 
E)  homogeneous mixtures.

Question 2

Determine the mass of an object that has a volume of 88.6 mL and a density of 2.22 g/mL.

Accepted Answer

A)  90.82 g 
B)  0.0251 g 
C)  39.9 g 
D)  86.4 g 
E)  197 g 
A)  90.82 g 
B)  0.0251 g 
C)  39.9 g 
D)  86.4 g 
E)  197 g

Question 3

Which of the following represents a physical property?

Accepted Answer

A)  Sodium metal is extremely reactive with chlorine gas. 
B)  Mercury is a silvery liquid at room temperature. 
C)  Iron has a tendency to "rust." 
D)  Butane is highly flammable. 
E)  Xenon has an unreactive nature. 
A)  Sodium metal is extremely reactive with chlorine gas. 
B)  Mercury is a silvery liquid at room temperature. 
C)  Iron has a tendency to "rust." 
D)  Butane is highly flammable. 
E)  Xenon has an unreactive nature.

Question 4

How many cm are in 20.2 ft?

Accepted Answer

A)  7.95 cm 
B)  242 cm 
C)  51.2 cm 
D)  616 cm 
E)  0.663 cm 
A)  7.95 cm 
B)  242 cm 
C)  51.2 cm 
D)  616 cm 
E)  0.663 cm

Question 5

A mass of mercury occupies 0.950 L.What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL,and the density of ethanol is 0.789 g/mL.

Accepted Answer

A)  0.0553 L 
B)  0.0613 L 
C)  16.3 L 
D)  18.1 L 
A)  0.0553 L 
B)  0.0613 L 
C)  16.3 L 
D)  18.1 L

Question 6

Which of the following is the smallest volume?

Accepted Answer

A)  11 cm3 
B)  0.065 dL 
C)  2.8 × 103 mL 
D)  5.0 × 107 nL 
A)  11 cm3 
B)  0.065 dL 
C)  2.8 × 103 mL 
D)  5.0 × 107 nL

Question 7

How many kL does a 9.51 × 109 cL sample contain?

Accepted Answer

A)  9.51 × 104 kL 
B)  9.51 × 1014 kL 
C)  9.51× 105 kL 
D)  9.51 × 1013 kL 
E)  9.51 × 103 kL 
A)  9.51 × 104 kL 
B)  9.51 × 1014 kL 
C)  9.51× 105 kL 
D)  9.51 × 1013 kL 
E)  9.51 × 103 kL

Question 8

Give the composition of water.

Accepted Answer

A)  one hydrogen atom and two oxygen atoms 
B)  one hydrogen atom and one oxygen atom 
C)  two hydrogen atoms and one oxygen atom 
D)  one hydrogen molecule and two oxygen molecules 
A)  one hydrogen atom and two oxygen atoms 
B)  one hydrogen atom and one oxygen atom 
C)  two hydrogen atoms and one oxygen atom 
D)  one hydrogen molecule and two oxygen molecules

Question 9

Define potential energy.

Accepted Answer

A)  energy associated with the temperature of an object 
B)  energy associated with the motion of an object 
C)  energy associated with the force of an object 
D)  energy associated with the gravity of an object 
E)  energy associated with the position or composition of an object 
A)  energy associated with the temperature of an object 
B)  energy associated with the motion of an object 
C)  energy associated with the force of an object 
D)  energy associated with the gravity of an object 
E)  energy associated with the position or composition of an object

Question 10

Which of the following is the lowest temperature?

Accepted Answer

A)  48°C 
B)  75°F 
C)  313 K 
D)  All of these temperatures are all equal. 
A)  48°C 
B)  75°F 
C)  313 K 
D)  All of these temperatures are all equal.

Question 11

How many significant figures are there in the answer for the following problem?  
 
  = ?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 12

Round off 00507506 to four significant figures.

Accepted Answer

A)  0051 
B)  5076 
C)  5100 
D)  5.075 × 105 
A)  0051 
B)  5076 
C)  5100 
D)  5.075 × 105

Question 13

Identify the largest volume.

Accepted Answer

A)  2.32 qt 
B)  2.11 L 
C)  1950 mL 
D)  2015 cm3 
E)  122 in3 
A)  2.32 qt 
B)  2.11 L 
C)  1950 mL 
D)  2015 cm3 
E)  122 in3

Question 14

Which of the following volumes is equal to 41 mL?

Accepted Answer

A)  41 cm3 
B)  41 dm3 
C)  0.41 L 
D)  0.00041 kL 
A)  41 cm3 
B)  41 dm3 
C)  0.41 L 
D)  0.00041 kL

Question 15

What answer should be reported,with the correct number of significant figures,for the following calculation? (249.362 + 41)/ 63.498

Accepted Answer

A)  4.6 
B)  4.57 
C)  4.573 
D)  4.5728 
E)  4.57277 
A)  4.6 
B)  4.57 
C)  4.573 
D)  4.5728 
E)  4.57277

Question 16

A chemical change

Accepted Answer

A)  occurs when methane gas is burned. 
B)  occurs when paper is shredded. 
C)  occurs when water is vaporized. 
D)  occurs when salt is dissolved in water. 
E)  occurs when powdered lemonade is stirred into water. 
A)  occurs when methane gas is burned. 
B)  occurs when paper is shredded. 
C)  occurs when water is vaporized. 
D)  occurs when salt is dissolved in water. 
E)  occurs when powdered lemonade is stirred into water.

Question 17

The factor 106 corresponds to which prefix?

Accepted Answer

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

Question 18

Identify the type of energy that is NOT chemical energy.

Accepted Answer

A)  battery 
B)  gasoline in a car 
C)  light bulb 
D)  ball rolling down the hill 
E)  food 
A)  battery 
B)  gasoline in a car 
C)  light bulb 
D)  ball rolling down the hill 
E)  food

Question 19

Water is an example of

Accepted Answer

A)  a compound. 
B)  an element. 
C)  a heterogeneous mixture. 
D)  a homogeneous mixture. 
A)  a compound. 
B)  an element. 
C)  a heterogeneous mixture. 
D)  a homogeneous mixture.

Question 20

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

Accepted Answer

A)  95°F 
B)  1.67°F 
C)  3°F 
D)  57°F 
E)  63°F 
A)  95°F 
B)  1.67°F 
C)  3°F 
D)  57°F 
E)  63°F

Exam 1: Matter, measurement, and Problem Solving

Molecules can be described as

Determine the mass of an object that has a volume of 88.6 mL and a density of 2.22 g/mL.

Which of the following represents a physical property?

How many cm are in 20.2 ft?

A mass of mercury occupies 0.950 L.What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL,and the density of ethanol is 0.789 g/mL.

Which of the following is the smallest volume?

How many kL does a 9.51 × 109 cL sample contain?

Give the composition of water.

Define potential energy.

Which of the following is the lowest temperature?

How many significant figures are there in the answer for the following problem? = ?

Round off 00507506 to four significant figures.

Identify the largest volume.

Which of the following volumes is equal to 41 mL?

What answer should be reported,with the correct number of significant figures,for the following calculation? (249.362 + 41)/ 63.498

A chemical change

The factor 106 corresponds to which prefix?

Identify the type of energy that is NOT chemical energy.

Water is an example of

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

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

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,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many kL does a 9.51 × 10⁹ cL sample contain?

The factor 10⁶ corresponds to which prefix?