,Name Clas Dat
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
1. Define the following terms:
tii tii tii
a. science
b. chemistry
ANSWER: a. Science - tii tii
a framework for gaining and organizing knowledge. It is a procedure for processing and understand
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
ing certain information. tii tii
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
2. Define the following terms:
tii tii tii
a. scientific method tii
b. natural law tii
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
tii tii tii tii tii tii tii tii tii tii
b. Natural law - a statement describing observed beha or. tii tii tii tii tii tii tii tii
c. Hypothesis - a possible explanation for an observation. tii tii tii tii tii tii tii
d. Theory - tii
a set of testsed hypotheses that gives an explanation for some beha or or observation (also called
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
a model). tii
3. Which of the following is not a step in the scientific method?
tii tii tii tii tii tii tii tii tii tii tii
a. Make an observation. tii tii
b. Formulate a hypothesis. tii tii
c. Perform an experiment. tii tii
d. Change results to agree with your hypothesis.
tii tii tii tii tii tii
e. Develop a theory (or model). tii tii tii tii
ANSWER: d
4. A tii is a summary of observed beha or, and a
tii tii tii tii tii tii tii tii tii is an explanation of beha or.
tii tii tii tii tii
a. law, measurement tii
b. theory, scientific method tii tii
c. theory, law tii
d. law, theory tii
e. hypothesis, theory tii
ANSWER: d
5. Generally, observed beha or that can be formulated into a statement, sometimes mathematical in nature, is c
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
alled a(n) tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii1
.
,Name Clas Dat
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
ANSWER: d
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii2
.
, Name Clas Dat
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is called
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii ti
a(n)
i
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
tii tii tii tii tii tii tii tii tii tii tii tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: e
9. A quantitative observation
tii tii
a. contains a number and a unit tii tii tii tii tii
b. does not contain a number
tii tii tii tii
c. always makes a comparison tii tii tii
d. must be obtained through experimentation
tii tii tii tii
e. is none of these
tii tii tii
ANSWER: a
10. Which of the following is an example of a quantitative observation?
tii tii tii tii tii tii tii tii tii tii
a. The piece of metal is longer than the piece of wood.
tii tii tii tii tii tii tii tii tii tii
b. Solution 1 is much darker than solution 2. tii tii tii tii tii tii tii
c. The liquid in beaker A is blue. tii tii tii tii tii tii
d. The temperature of the liquid is 60°C. tii tii tii tii tii tii
e. At least two of the above (A-D) are quantitative observations.
tii tii tii tii tii tii tii tii tii
ANSWER: d
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii3
.
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
1. Define the following terms:
tii tii tii
a. science
b. chemistry
ANSWER: a. Science - tii tii
a framework for gaining and organizing knowledge. It is a procedure for processing and understand
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
ing certain information. tii tii
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
2. Define the following terms:
tii tii tii
a. scientific method tii
b. natural law tii
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
tii tii tii tii tii tii tii tii tii tii
b. Natural law - a statement describing observed beha or. tii tii tii tii tii tii tii tii
c. Hypothesis - a possible explanation for an observation. tii tii tii tii tii tii tii
d. Theory - tii
a set of testsed hypotheses that gives an explanation for some beha or or observation (also called
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
a model). tii
3. Which of the following is not a step in the scientific method?
tii tii tii tii tii tii tii tii tii tii tii
a. Make an observation. tii tii
b. Formulate a hypothesis. tii tii
c. Perform an experiment. tii tii
d. Change results to agree with your hypothesis.
tii tii tii tii tii tii
e. Develop a theory (or model). tii tii tii tii
ANSWER: d
4. A tii is a summary of observed beha or, and a
tii tii tii tii tii tii tii tii tii is an explanation of beha or.
tii tii tii tii tii
a. law, measurement tii
b. theory, scientific method tii tii
c. theory, law tii
d. law, theory tii
e. hypothesis, theory tii
ANSWER: d
5. Generally, observed beha or that can be formulated into a statement, sometimes mathematical in nature, is c
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
alled a(n) tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii1
.
,Name Clas Dat
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
ANSWER: d
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii2
.
, Name Clas Dat
tii
: s: e:
Chapter 01 - Chemistry: An Introduction
tii tii tii tii tii
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is called
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii ti
a(n)
i
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
tii tii tii tii tii tii tii tii tii tii tii tii
a. observation
b. measurement
c. theory
d. natural law tii
e. experiment
ANSWER: e
9. A quantitative observation
tii tii
a. contains a number and a unit tii tii tii tii tii
b. does not contain a number
tii tii tii tii
c. always makes a comparison tii tii tii
d. must be obtained through experimentation
tii tii tii tii
e. is none of these
tii tii tii
ANSWER: a
10. Which of the following is an example of a quantitative observation?
tii tii tii tii tii tii tii tii tii tii
a. The piece of metal is longer than the piece of wood.
tii tii tii tii tii tii tii tii tii tii
b. Solution 1 is much darker than solution 2. tii tii tii tii tii tii tii
c. The liquid in beaker A is blue. tii tii tii tii tii tii
d. The temperature of the liquid is 60°C. tii tii tii tii tii tii
e. At least two of the above (A-D) are quantitative observations.
tii tii tii tii tii tii tii tii tii
ANSWER: d
CopyrighttiiCengagetiiLearning.tiiPoweredtiibytiiCognero Pagetii3
.
