,Name Clas Dat
n&
: s: e:
Chapter 01 - Chemistry: An Introduction
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1. Define the following terms:
n& n& n&
a. science
b. chemistry
ANSWER: a. Science - n& n&
a framework for gaining and organizing knowledge. It is a procedure for processing and understandin
ol n& n& n& n& n& n& n& n& n& n& n& n& n&
g certain information.
n& n& n&
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
n& ol n& n& n& n& n& n& n& n& n& n& n& n& n& n& ol
2. Define the following terms:
n& n& n&
a. scientific method n&
b. natural law n&
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
n& n& n& n& n& n& n& n& n& n&
b. Natural law - a statement describing observed behavior. n& n& n& n& n& n& n&
c. Hypothesis - a possible explanation for an observation. n& n& n& n& ol n& n&
d. Theory - n&
a set of testsed hypotheses that gives an explanation for some behavior or observation (also called a m
ol n& n& n& n& ol n& n& n& n& n& n& n& n& n& n& n&
odel).
3. Which of the following is not a step in the scientific method?
n& n& n& n& n& n& ol n& ol n& n&
a. Make an observation. n& ol
b. Formulate a hypothesis. n& n&
c. Perform an experiment. n& n&
d. Change results to agree with your hypothesis.
n& n& ol n& n& n&
e. Develop a theory (or model). n& n& n& n&
ANSWER: d
4. A n& is a summary of observed behavior, and a
n& n& n& n& n& n& n& n& is an explanation of behavior.
n& n& n& n&
a. law, measurement n&
b. theory, scientific method n& n&
c. theory, law n&
d. law, theory n&
e. hypothesis, theory n&
ANSWER: d
5. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is c
n& n& n& ol n& n& n& n& n& n& n& n& n& n& n&
a lled a(n)
n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
Copyright Cengage Learning. Powered by Cogner
n& n& n& n& n& Page 1 n&
o.
,Name Clas Dat
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: s: e:
Chapter 01 - Chemistry: An Introduction
n& n& n& n& n&
ANSWER: d
Copyright Cengage Learning. Powered by Cogner
n& n& n& n& n& Page 2
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, Name Clas Dat
n&
: s: e:
Chapter 01 - Chemistry: An Introduction
n& n& n& n& n&
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is called a(n
n& n& n& n& ol n& n& n& n& n& n& n& n& n& ol n& n& n& n&
)
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
n& n& n& n& n& n& n& n& n& n& n& n& n& n& n& n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
n& n& n& ol n& n& n& n& n& n& n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: e
9. A quantitative observation
n& n&
a. contains a number and a unit n& ol n& n& n&
b. does not contain a numbern& ol n& n&
c. always makes a comparison n& n& ol
d. must be obtained through experimentation
n& n& n& n&
e. is none of these
n& n& n&
ANSWER: a
10. Which of the following is an example of a quantitative observation?
n& n& n& n& n& ol n& n& n& n&
a. The piece of metal is longer than the piece of wood.
n& n& n& n& ol n& n& n& n& n&
b. Solution 1 is much darker than solution 2. n& n& n& n& n& n& n&
c. The liquid in beaker A is blue.
n& n& n& n& n& n&
d. The temperature of the liquid is 60°C.
n& n& n& n& n& n&
e. At least two of the above (A-D) are quantitative observations.
n& n& n& n& n& n& n& n& n&
ANSWER: d
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n& n& n& n& n& Page 3 n&
o.
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: s: e:
Chapter 01 - Chemistry: An Introduction
n& n& n& n& n&
1. Define the following terms:
n& n& n&
a. science
b. chemistry
ANSWER: a. Science - n& n&
a framework for gaining and organizing knowledge. It is a procedure for processing and understandin
ol n& n& n& n& n& n& n& n& n& n& n& n& n&
g certain information.
n& n& n&
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
n& ol n& n& n& n& n& n& n& n& n& n& n& n& n& n& ol
2. Define the following terms:
n& n& n&
a. scientific method n&
b. natural law n&
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
n& n& n& n& n& n& n& n& n& n&
b. Natural law - a statement describing observed behavior. n& n& n& n& n& n& n&
c. Hypothesis - a possible explanation for an observation. n& n& n& n& ol n& n&
d. Theory - n&
a set of testsed hypotheses that gives an explanation for some behavior or observation (also called a m
ol n& n& n& n& ol n& n& n& n& n& n& n& n& n& n& n&
odel).
3. Which of the following is not a step in the scientific method?
n& n& n& n& n& n& ol n& ol n& n&
a. Make an observation. n& ol
b. Formulate a hypothesis. n& n&
c. Perform an experiment. n& n&
d. Change results to agree with your hypothesis.
n& n& ol n& n& n&
e. Develop a theory (or model). n& n& n& n&
ANSWER: d
4. A n& is a summary of observed behavior, and a
n& n& n& n& n& n& n& n& is an explanation of behavior.
n& n& n& n&
a. law, measurement n&
b. theory, scientific method n& n&
c. theory, law n&
d. law, theory n&
e. hypothesis, theory n&
ANSWER: d
5. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is c
n& n& n& ol n& n& n& n& n& n& n& n& n& n& n&
a lled a(n)
n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
Copyright Cengage Learning. Powered by Cogner
n& n& n& n& n& Page 1 n&
o.
,Name Clas Dat
n&
: s: e:
Chapter 01 - Chemistry: An Introduction
n& n& n& n& n&
ANSWER: d
Copyright Cengage Learning. Powered by Cogner
n& n& n& n& n& Page 2
n&
o.
, Name Clas Dat
n&
: s: e:
Chapter 01 - Chemistry: An Introduction
n& n& n& n& n&
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is called a(n
n& n& n& n& ol n& n& n& n& n& n& n& n& n& ol n& n& n& n&
)
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
n& n& n& n& n& n& n& n& n& n& n& n& n& n& n& n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
n& n& n& ol n& n& n& n& n& n& n& n&
a. observation
b. measurement
c. theory
d. natural law n&
e. experiment
ANSWER: e
9. A quantitative observation
n& n&
a. contains a number and a unit n& ol n& n& n&
b. does not contain a numbern& ol n& n&
c. always makes a comparison n& n& ol
d. must be obtained through experimentation
n& n& n& n&
e. is none of these
n& n& n&
ANSWER: a
10. Which of the following is an example of a quantitative observation?
n& n& n& n& n& ol n& n& n& n&
a. The piece of metal is longer than the piece of wood.
n& n& n& n& ol n& n& n& n& n&
b. Solution 1 is much darker than solution 2. n& n& n& n& n& n& n&
c. The liquid in beaker A is blue.
n& n& n& n& n& n&
d. The temperature of the liquid is 60°C.
n& n& n& n& n& n&
e. At least two of the above (A-D) are quantitative observations.
n& n& n& n& n& n& n& n& n&
ANSWER: d
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