Chemistry: Structure & Properties, 2e (Tro)
Chapter 1: Atoms
1.1 Multiple Choice Questions
1) An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973
amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the
mass of the element?
A) 27.684 amu
B) 29.251 amu
C) 28.085 amu
D) 30.107 amu
S
E) 28.991 amu
R
Answer: C
Diff: 5 Var: 1 Page Ref: 1.9
VE
LO: 1.6
Global: G4
2) All of the following will lead to a homogeneous mixture EXCEPT
A) sugar and coffee.
B) mud and water.
C) salt and water.
IE
H
D) ice tea and lemonade.
E) vinegar and water.
AC
Answer: B
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
M
3) How are gases different from solids and liquids?
EA
A) Gases can only be made up of atoms.
B) The particles in a gas attract each other much more strongly than in solids and liquids.
C) Gases are compressible.
D) Only gases can take the shape of their container.
R
E) Gases are colorless.
Answer: C
D
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
1
Copyright © 2018 Pearson Education, Inc.
,4) A scientific law
A) is a brief statement that summarizes past observations and makes predictions.
B) is subject to change via legal action.
C) contains an explanation of observations.
D) must have a mathematical formula.
E) cannot be modified.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
5) All statements about scientific theories are true EXCEPT
S
A) they explain why nature behaves the way it does.
B) they must have the ability to make predictions on future behavior.
R
C) they should use observations to test the theory.
D) they are derived from hypothesis.
VE
E) they are speculation.
Answer: E
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2 IE
H
6) A sample of a compound containing only carbon and oxygen decomposes and produces
24.50g of carbon and 32.59g of oxygen. What is the sample?
AC
A) CO
B) CO2
C) CO3
D) C3O2
M
E) C2O
Answer: A
EA
Diff: 3 Var: 1 Page Ref: 1.5
LO: 1.4
Global: G4
R
7) Rutherford's Gold Foil Experiment helped prove
A) the diameter of a gold atom.
D
B) the exact charge of an electrons.
C) the exact mass of a gold atom.
D) that the mass of an atom is concentrated in a very small space.
E) the mass to charge ratio of an electron.
Answer: D
Diff: 2 Var: 1 Page Ref: 1.7
LO: 1.5
Global: G2
2
Copyright © 2018 Pearson Education, Inc.
,8) Rank in the order of increasing mass.
A) proton, neutron, electron
B) neutron, proton, electron
C) electron, proton, neutron
D) electron, neutron, proton
E) proton, electron, neutron
Answer: C
Diff: 2 Var: 1 Page Ref: 1.8
LO: 1.5
Global: G2
9) The atomic number (Z) is the number of ________ found in the nucleus of an atom.
S
A) neutrons
B) protons
R
C) protons and neutrons
D) electrons
VE
E) protons and electrons
Answer: B
Diff: 2 Var: 1 Page Ref: 1.8
LO: 1.5
Global: G2 IE
H
10) A new compound was recently discovered and found to have an atomic weight of 342.38
amu. This element has two isotopes, the lighter of which has a mass of 340.91 amu and an
AC
abundance of 68.322%. What is the mass of the heavier isotope?
A) 350.21
B) 345.55
C) 342.38
M
D) 348.67
E) 343.29
EA
Answer: B
Diff: 5 Var: 1 Page Ref: 1.9
LO: 1.6
Global: G4
R
11) an atom that has lost an electron is
D
A) a cation.
B) unlikely to be found in homogeneous mixtures.
C) electrically neutral.
D) likely to behave exactly like the parent atom.
E) an anion.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.8
LO: 1.6
Global: G2
3
Copyright © 2018 Pearson Education, Inc.
, 12) Molecules can be described as
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.
Answer: C
Diff: 1 Var: 1 Page Ref: 1.2
Global: G1
13) Give the composition of water.
A) two hydrogen atoms and two oxygen atoms
S
B) one hydrogen atom and one oxygen atom
C) two hydrogen atoms and one oxygen atom
R
D) one hydrogen atom and two oxygen atoms
Answer: C
VE
Diff: 1 Var: 1 Page Ref: 1.2
Global: G2
14) Give the composition of hydrogen peroxide.
A) two hydrogen atoms and two oxygen atoms
B) one hydrogen atom and one oxygen atom
IE
H
C) two hydrogen atoms and one oxygen atom
D) one hydrogen atom and two oxygen atoms
AC
Answer: A
Diff: 1 Var: 1 Page Ref: 1.2
Global: G2
M
15) Identify the characteristics of a liquid.
A) definite volume and definite shape
EA
B) definite volume and no definite shape
C) no definite shape and definite volume
D) no definite shape and no definite volume
Answer: B
R
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
D
Global: G2
16) Identify the characteristics of a solid.
A) definite volume and definite shape
B) definite volume and no definite shape
C) no definite shape and definite volume
D) no definite shape and no definite volume
Answer: A
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
4
Copyright © 2018 Pearson Education, Inc.
Chapter 1: Atoms
1.1 Multiple Choice Questions
1) An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973
amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the
mass of the element?
A) 27.684 amu
B) 29.251 amu
C) 28.085 amu
D) 30.107 amu
S
E) 28.991 amu
R
Answer: C
Diff: 5 Var: 1 Page Ref: 1.9
VE
LO: 1.6
Global: G4
2) All of the following will lead to a homogeneous mixture EXCEPT
A) sugar and coffee.
B) mud and water.
C) salt and water.
IE
H
D) ice tea and lemonade.
E) vinegar and water.
AC
Answer: B
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
M
3) How are gases different from solids and liquids?
EA
A) Gases can only be made up of atoms.
B) The particles in a gas attract each other much more strongly than in solids and liquids.
C) Gases are compressible.
D) Only gases can take the shape of their container.
R
E) Gases are colorless.
Answer: C
D
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
1
Copyright © 2018 Pearson Education, Inc.
,4) A scientific law
A) is a brief statement that summarizes past observations and makes predictions.
B) is subject to change via legal action.
C) contains an explanation of observations.
D) must have a mathematical formula.
E) cannot be modified.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
5) All statements about scientific theories are true EXCEPT
S
A) they explain why nature behaves the way it does.
B) they must have the ability to make predictions on future behavior.
R
C) they should use observations to test the theory.
D) they are derived from hypothesis.
VE
E) they are speculation.
Answer: E
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2 IE
H
6) A sample of a compound containing only carbon and oxygen decomposes and produces
24.50g of carbon and 32.59g of oxygen. What is the sample?
AC
A) CO
B) CO2
C) CO3
D) C3O2
M
E) C2O
Answer: A
EA
Diff: 3 Var: 1 Page Ref: 1.5
LO: 1.4
Global: G4
R
7) Rutherford's Gold Foil Experiment helped prove
A) the diameter of a gold atom.
D
B) the exact charge of an electrons.
C) the exact mass of a gold atom.
D) that the mass of an atom is concentrated in a very small space.
E) the mass to charge ratio of an electron.
Answer: D
Diff: 2 Var: 1 Page Ref: 1.7
LO: 1.5
Global: G2
2
Copyright © 2018 Pearson Education, Inc.
,8) Rank in the order of increasing mass.
A) proton, neutron, electron
B) neutron, proton, electron
C) electron, proton, neutron
D) electron, neutron, proton
E) proton, electron, neutron
Answer: C
Diff: 2 Var: 1 Page Ref: 1.8
LO: 1.5
Global: G2
9) The atomic number (Z) is the number of ________ found in the nucleus of an atom.
S
A) neutrons
B) protons
R
C) protons and neutrons
D) electrons
VE
E) protons and electrons
Answer: B
Diff: 2 Var: 1 Page Ref: 1.8
LO: 1.5
Global: G2 IE
H
10) A new compound was recently discovered and found to have an atomic weight of 342.38
amu. This element has two isotopes, the lighter of which has a mass of 340.91 amu and an
AC
abundance of 68.322%. What is the mass of the heavier isotope?
A) 350.21
B) 345.55
C) 342.38
M
D) 348.67
E) 343.29
EA
Answer: B
Diff: 5 Var: 1 Page Ref: 1.9
LO: 1.6
Global: G4
R
11) an atom that has lost an electron is
D
A) a cation.
B) unlikely to be found in homogeneous mixtures.
C) electrically neutral.
D) likely to behave exactly like the parent atom.
E) an anion.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.8
LO: 1.6
Global: G2
3
Copyright © 2018 Pearson Education, Inc.
, 12) Molecules can be described as
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.
Answer: C
Diff: 1 Var: 1 Page Ref: 1.2
Global: G1
13) Give the composition of water.
A) two hydrogen atoms and two oxygen atoms
S
B) one hydrogen atom and one oxygen atom
C) two hydrogen atoms and one oxygen atom
R
D) one hydrogen atom and two oxygen atoms
Answer: C
VE
Diff: 1 Var: 1 Page Ref: 1.2
Global: G2
14) Give the composition of hydrogen peroxide.
A) two hydrogen atoms and two oxygen atoms
B) one hydrogen atom and one oxygen atom
IE
H
C) two hydrogen atoms and one oxygen atom
D) one hydrogen atom and two oxygen atoms
AC
Answer: A
Diff: 1 Var: 1 Page Ref: 1.2
Global: G2
M
15) Identify the characteristics of a liquid.
A) definite volume and definite shape
EA
B) definite volume and no definite shape
C) no definite shape and definite volume
D) no definite shape and no definite volume
Answer: B
R
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
D
Global: G2
16) Identify the characteristics of a solid.
A) definite volume and definite shape
B) definite volume and no definite shape
C) no definite shape and definite volume
D) no definite shape and no definite volume
Answer: A
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
Global: G2
4
Copyright © 2018 Pearson Education, Inc.
