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