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

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

Question 3

What decimal power does the abbreviation pico represent?

Accepted Answer

A)  1 × 1010 
B)  1 × 103 
C)  1 × 10-4 
D)  1 × 10-12 
E)  1 × 10-10 
A)  1 × 1010 
B)  1 × 103 
C)  1 × 10-4 
D)  1 × 10-12 
E)  1 × 10-10

Question 4

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Accepted Answer

A)  298 g 
B)  1100 g 
C)  907 g 
D)  568 g 
E)  866 g 
A)  298 g 
B)  1100 g 
C)  907 g 
D)  568 g 
E)  866 g

Question 5

Decanting is ________.

Accepted Answer

A)  a process in which the more volatile liquid is boiled off 
B)  dissolving a solid into a liquid 
C)  separating a solid from a liquid by pouring off the liquid 
D)  pouring a mixture through a filter paper to separate the solid from the liquid 
E)  heating a mixture of two solids to fuse them together 
A)  a process in which the more volatile liquid is boiled off 
B)  dissolving a solid into a liquid 
C)  separating a solid from a liquid by pouring off the liquid 
D)  pouring a mixture through a filter paper to separate the solid from the liquid 
E)  heating a mixture of two solids to fuse them together

Question 6

Which of the following statements is FALSE?

Accepted Answer

A)  Energy is neither created nor destroyed. 
B)  When an object falls from a higher surface, gravitational potential energy converts into kinetic energy. 
C)  Physical and chemical changes are usually accompanied by energy changes. 
D)  The molecules that compose gasoline have chemical potential energy. 
E)  When gasoline undergoes combustion, the molecules that are newly formed have higher potential energy than the molecules that compose gasoline. 
A)  Energy is neither created nor destroyed. 
B)  When an object falls from a higher surface, gravitational potential energy converts into kinetic energy. 
C)  Physical and chemical changes are usually accompanied by energy changes. 
D)  The molecules that compose gasoline have chemical potential energy. 
E)  When gasoline undergoes combustion, the molecules that are newly formed have higher potential energy than the molecules that compose gasoline.

Question 7

Define random error.

Accepted Answer

Random error has an

Question 8

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 9

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 10

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal?  (1 gal=4 qt=3.7854 L)

Accepted Answer

A)  1.72 × 10-4 
B)  0.172 
C)  83.3 
D)  5.81 × 103 
E)  5.81 
A)  1.72 × 10-4 
B)  0.172 
C)  83.3 
D)  5.81 × 103 
E)  5.81

Question 11

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 12

The energy associated with the temperature of an object is known as the ________.

Accepted Answer

A)  potential energy 
B)  total energy 
C)  thermal energy 
D)  gravitational energy 
E)  magnetic energy 
A)  potential energy 
B)  total energy 
C)  thermal energy 
D)  gravitational energy 
E)  magnetic energy

Question 13

How many significant figures are there in the answer to the following problem? 
( 9.992 × 3.200) + 0. 610

Accepted Answer

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

Question 14

Ethylene glycol is commonly used as antifreeze in the cooling systems of vehicles due to its low freezing point, 8.6 °F. What is the freezing point in K?

Accepted Answer

A)  280 K 
B)  -13 K 
C)  260 K 
D)  273 K 
E)  240 K 
A)  280 K 
B)  -13 K 
C)  260 K 
D)  273 K 
E)  240 K

Question 15

Which of the following represents a chemical property of hydrogen gas?

Accepted Answer

A)  It is gaseous at room temperature. 
B)  It is less dense than air. 
C)  It reacts explosively with oxygen. 
D)  It is colourless. 
E)  It is tasteless. 
A)  It is gaseous at room temperature. 
B)  It is less dense than air. 
C)  It reacts explosively with oxygen. 
D)  It is colourless. 
E)  It is tasteless.

Question 16

If the speed limit on a highway is 100 km h-1, what is the speed limit in m h-1?

Accepted Answer

A)  1 × 107 m h-1 
B)  0.1 m h-1 
C)  1 × 103 m h-1 
D)  1 × 105 m h-1 
E)  1 × 101 m h-1 
A)  1 × 107 m h-1 
B)  0.1 m h-1 
C)  1 × 103 m h-1 
D)  1 × 105 m h-1 
E)  1 × 101 m h-1

Question 17

Round off 00 907506 to four significant figures.

Accepted Answer

A)  00 91 
B)  9076 
C)  9100 
D)  9.075 × 105 
A)  00 91 
B)  9076 
C)  9100 
D)  9.075 × 105

Question 18

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.11 g mL-1, 1.81 g mL-1, 1.95 g mL-1, 1.75 g mL-1. If the actual value for the density of the sugar solution is 1.75 g mL-1, which statement below best describes her results?

Accepted Answer

A)  Her results are precise, but not accurate. 
B)  Her results are accurate, but not precise. 
C)  Her results are both precise and accurate 
D)  Her results are neither precise nor accurate. 
E)  It isn't possible to determine from the information given. 
A)  Her results are precise, but not accurate. 
B)  Her results are accurate, but not precise. 
C)  Her results are both precise and accurate 
D)  Her results are neither precise nor accurate. 
E)  It isn't possible to determine from the information given.

Question 19

What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43 × 3.911) + 9413.4136

Accepted Answer

A)  13189 
B)  13189.2 
C)  1.32 × 104 
D)  1.3 × 104 
E)  1.319 × 104 
A)  13189 
B)  13189.2 
C)  1.32 × 104 
D)  1.3 × 104 
E)  1.319 × 104

Question 20

If I wish to travel 88 mph (miles per hour) in a DeLorean. How fast would I be travelling in m s-1? (1 km = 0.6214 miles)

Accepted Answer

A)  39 m s-1 
B)  142 m s-1 
C)  129 m s-1 
D)  76 m s-1 
E)  44 m s-1 
A)  39 m s-1 
B)  142 m s-1 
C)  129 m s-1 
D)  76 m s-1 
E)  44 m s-1

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.

Which of the following represents a physical property?

What decimal power does the abbreviation pico represent?

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Decanting is ________.

Which of the following statements is FALSE?

Define random error.

The factor 10-3 corresponds to which prefix?

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

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? (1 gal=4 qt=3.7854 L)

Identify the common substance that has the lowest density.

The energy associated with the temperature of an object is known as the ________.

How many significant figures are there in the answer to the following problem? ( 9.992 × 3.200) + 0. 610

Ethylene glycol is commonly used as antifreeze in the cooling systems of vehicles due to its low freezing point, 8.6 °F. What is the freezing point in K?

Which of the following represents a chemical property of hydrogen gas?

If the speed limit on a highway is 100 km h-1, what is the speed limit in m h-1?

Round off 00 907506 to four significant figures.

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.11 g mL-1, 1.81 g mL-1, 1.95 g mL-1, 1.75 g mL-1. If the actual value for the density of the sugar solution is 1.75 g mL-1, which statement below best describes her results?

What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43 × 3.911) + 9413.4136

If I wish to travel 88 mph (miles per hour) in a DeLorean. How fast would I be travelling in m s-1? (1 km = 0.6214 miles)

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

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL^-1.

The factor 10^-3 corresponds to which prefix?

If the speed limit on a highway is 100 km h^-1, what is the speed limit in m h^-1?

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.11 g mL^-1, 1.81 g mL^-1, 1.95 g mL^-1, 1.75 g mL^-1. If the actual value for the density of the sugar solution is 1.75 g mL^-1, which statement below best describes her results?

If I wish to travel 88 mph (miles per hour) in a DeLorean. How fast would I be travelling in m s^-1? (1 km = 0.6214 miles)