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