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