Principles of Chemistry: A Molecular Approach 2e (Tro)
Chapter 1 Matter, Measurement, and Problem Solving
1) Molecules can be described as
A) a mixture of two or more pure substances.
B) a mixture of two or more elements that has a specific ratio between components.
C) two or more atoms chemically joined together.
D) a heterogeneous mixture
E) a homogeneous mixture
Answer: C
Diff: 1 Page Ref: 1.1
Global: G1
2) Give the composition of water.
A) two hydrogen atoms and two oxygen atoms.
B) one hydrogen atom and one oxygen atom.
C) two hydrogen atoms and one oxygen atom.
D) one hydrogen atom and two oxygen atoms.
Answer: C
Diff: 1 Page Ref: 1.1
Global: G2
3) Dalton's Atomic Theory states
A) that all elements have several isotopes.
,B) that matter is composed of small indestructible particles.
C) that the properties of matter are determined by the properties of atoms.
D) that energy is neither created nor destroyed during a chemical reaction.
E) that an atom is predominantly empty space.
Answer: B
Diff: 1 Page Ref: 1.2
Global: G1
4) The statement, "In a chemical reaction, matter is neither created nor destroyed" is
called
A) The Law of Conservation of Mass
B) Dalton's Atomic Theory
C) The Scientific Method
D) The Law of Multiple Proportions
E) The Law of Definite Proportions
Answer: A
Diff: 1 Page Ref: 1.2
Global: G1
,5) Which of the following represents a hypothesis?
A) Sodium reacts with water to form sodium hydroxide and hydrogen gas.
B) Nitrogen gas is a fairly inert substance.
C) Nickel has a silvery sheen.
D) When a substance combusts, it combines with air.
E) When wood burns, heat is given off.
Answer: D
Diff: 1 Page Ref: 1.2
Global: G2
6) Which of the following represent a valid hypothesis?
A) Neon does not react with oxygen.
B) Sodium metal reacts violently with water.
C) Lead is soft and malleable.
D) Oxygen is a gas at room temperature.
E) Metals tend to lose electrons.
Answer: E
Diff: 1 Page Ref: 1.2
Global: G2
7) The Scientific Method
A) is just a theory.
B) is a strict set of rules and procedures that lead to inarguable fact.
C) isn't used much in modern chemistry.
D) is based on continued observation and experiment.
, E) is a framework for proving an argument you know to be true.
Answer: D
Diff: 1 Page Ref: 1.2
Global: G1
8) Which of the following statements is TRUE?
A) A scientific law is fact.
B) Once a theory is constructed, it is considered fact.
C) A hypothesis is speculation that is difficult to test.
D) An observation explains why nature does something.
E) A scientific law summarizes a series of related observations.
Answer: E
Diff: 1 Page Ref: 1.2
Global: G1
9) Identify a liquid.
A) Definite volume and definite shape.
B) Definite volume and no definite shape.
C) Definite shape and no definite volume.
D) No definite shape and no definite volume.
Answer: B
Diff: 1 Page Ref: 1.3
Global: G1
10) Identify dry ice as a solid, liquid, or gas.
A) solid
Chapter 1 Matter, Measurement, and Problem Solving
1) Molecules can be described as
A) a mixture of two or more pure substances.
B) a mixture of two or more elements that has a specific ratio between components.
C) two or more atoms chemically joined together.
D) a heterogeneous mixture
E) a homogeneous mixture
Answer: C
Diff: 1 Page Ref: 1.1
Global: G1
2) Give the composition of water.
A) two hydrogen atoms and two oxygen atoms.
B) one hydrogen atom and one oxygen atom.
C) two hydrogen atoms and one oxygen atom.
D) one hydrogen atom and two oxygen atoms.
Answer: C
Diff: 1 Page Ref: 1.1
Global: G2
3) Dalton's Atomic Theory states
A) that all elements have several isotopes.
,B) that matter is composed of small indestructible particles.
C) that the properties of matter are determined by the properties of atoms.
D) that energy is neither created nor destroyed during a chemical reaction.
E) that an atom is predominantly empty space.
Answer: B
Diff: 1 Page Ref: 1.2
Global: G1
4) The statement, "In a chemical reaction, matter is neither created nor destroyed" is
called
A) The Law of Conservation of Mass
B) Dalton's Atomic Theory
C) The Scientific Method
D) The Law of Multiple Proportions
E) The Law of Definite Proportions
Answer: A
Diff: 1 Page Ref: 1.2
Global: G1
,5) Which of the following represents a hypothesis?
A) Sodium reacts with water to form sodium hydroxide and hydrogen gas.
B) Nitrogen gas is a fairly inert substance.
C) Nickel has a silvery sheen.
D) When a substance combusts, it combines with air.
E) When wood burns, heat is given off.
Answer: D
Diff: 1 Page Ref: 1.2
Global: G2
6) Which of the following represent a valid hypothesis?
A) Neon does not react with oxygen.
B) Sodium metal reacts violently with water.
C) Lead is soft and malleable.
D) Oxygen is a gas at room temperature.
E) Metals tend to lose electrons.
Answer: E
Diff: 1 Page Ref: 1.2
Global: G2
7) The Scientific Method
A) is just a theory.
B) is a strict set of rules and procedures that lead to inarguable fact.
C) isn't used much in modern chemistry.
D) is based on continued observation and experiment.
, E) is a framework for proving an argument you know to be true.
Answer: D
Diff: 1 Page Ref: 1.2
Global: G1
8) Which of the following statements is TRUE?
A) A scientific law is fact.
B) Once a theory is constructed, it is considered fact.
C) A hypothesis is speculation that is difficult to test.
D) An observation explains why nature does something.
E) A scientific law summarizes a series of related observations.
Answer: E
Diff: 1 Page Ref: 1.2
Global: G1
9) Identify a liquid.
A) Definite volume and definite shape.
B) Definite volume and no definite shape.
C) Definite shape and no definite volume.
D) No definite shape and no definite volume.
Answer: B
Diff: 1 Page Ref: 1.3
Global: G1
10) Identify dry ice as a solid, liquid, or gas.
A) solid
