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47
,47
, Chemistry: Structure & Properties, 2e (Tro)
Chapter 1: Atoms
1.1 Multiple Choice Questions
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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
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C) 28.085 amu
D) 30.107 amu
E) 28.991 amu
Answer: C
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Diff: 5 Var: 1 Page Ref: 1.9
LO: 1.6
Global: G4
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2) All of the following will lead to a homogeneous mixture EXCEPT
A) sugar and coffee.
B) mud and water.
C) salt and water.
24
D) ice tea and lemonade.
E) vinegar and water.
Answer: B
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
7?
Global: G2
3) How are gases different from solids and liquids?
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.
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C) Gases are compressible.
D) Only gases can take the shape of their container.
E) Gases are colorless.
Answer: C
??
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.
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E) cannot be modified.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
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5) All statements about scientific theories are true EXCEPT
A) they explain why nature behaves the way it does.
B) they must have the ability to make predictions on future behavior.
C) they should use observations to test the theory.
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D) they are derived from hypothesis.
E) they are speculation.
Answer: E
us
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
6) A sample of a compound containing only carbon and oxygen decomposes and produces
24
24.50g of carbon and 32.59g of oxygen. What is the sample?
A) CO
B) CO2
C) CO3
7?
D) C3O2
E) C2O
Answer: A
Diff: 3 Var: 1 Page Ref: 1.5
??
LO: 1.4
Global: G4
7) Rutherford's Gold Foil Experiment helped prove
??
A) the diameter of a gold atom.
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.
47
,47
, Chemistry: Structure & Properties, 2e (Tro)
Chapter 1: Atoms
1.1 Multiple Choice Questions
dy
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
ge
C) 28.085 amu
D) 30.107 amu
E) 28.991 amu
Answer: C
ni
Diff: 5 Var: 1 Page Ref: 1.9
LO: 1.6
Global: G4
us
2) All of the following will lead to a homogeneous mixture EXCEPT
A) sugar and coffee.
B) mud and water.
C) salt and water.
24
D) ice tea and lemonade.
E) vinegar and water.
Answer: B
Diff: 1 Var: 1 Page Ref: 1.2
LO: 1.1
7?
Global: G2
3) How are gases different from solids and liquids?
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.
E) Gases are colorless.
Answer: C
??
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.
dy
E) cannot be modified.
Answer: A
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
ge
5) All statements about scientific theories are true EXCEPT
A) they explain why nature behaves the way it does.
B) they must have the ability to make predictions on future behavior.
C) they should use observations to test the theory.
ni
D) they are derived from hypothesis.
E) they are speculation.
Answer: E
us
Diff: 1 Var: 1 Page Ref: 1.3
LO: 1.2
Global: G2
6) A sample of a compound containing only carbon and oxygen decomposes and produces
24
24.50g of carbon and 32.59g of oxygen. What is the sample?
A) CO
B) CO2
C) CO3
7?
D) C3O2
E) C2O
Answer: A
Diff: 3 Var: 1 Page Ref: 1.5
??
LO: 1.4
Global: G4
7) Rutherford's Gold Foil Experiment helped prove
??
A) the diameter of a gold atom.
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.
