,Name Clas Dat
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
1. Define the following terms: u5 u5 u 5
a. science
b. chemistry
ANSWER: a. Science - u5 u5
a framework for gaining and organizing knowledge. It is a procedure for processing and understan di
o u5 u5 u5 u5 u5 u5 u5 u5 i@ u5 u5 u5 u5 u5
n g certain information. u5 u 5 u 5
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5
2. Define the following terms: u5 u5 u 5
a. scientific method u5
b. natural law u5
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
u5 u5 nu 5 u5 u5 u5 u5 u5 u5 u5
b. Natural law - a statement describing observed behavior. u5 u5 u5 u5 u5 u5 nu 5
c. Hypothesis - a possible explanation for an observation. u5 u5 u5 u5 u5 u5 u5
d. Theory - u5
a set of testsed hypotheses that gives an explanation for some behavior or observation (also called a
ou5 u5 u5 u5 u5 u 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u
m odel). 5 u 5
3. Which of the following is not au5 u5 u5 u5 u 5 u5 ou 5 step in the scientific method?
u5 u5 u 5 u5
a. Make an observation. u5 u5
b. Formulate a hypothesis. u5 u5
c. Perform an experiment. u5 u5
d. Change results to agree with your hypothesis.
u5 u5 u5 u5 u5 u5
e. Develop a theory (or model). u5 u5 u5 u5
ANSWER: d
4. A u5 is a summary of observed behavior, and a
u 5 u5 u 5 u 5 u 5 u 5 u 5 u5 is an explanation of behavior.
u5 u5 u5 u5
a. law, measurement u5
b. theory, scientific method u5 u5
c. theory, law u5
d. law, theory u5
e. hypothesis, theory u5
ANSWER: d
5. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature,
u5 u5 u5 u5 u5 u5 u5 u5 nu5 u5 u5 u5 u5 u5
is c a lled a(n)
u 5 u5 u 5 u 5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page u 5
u Co5 1
,Name Clas Dat
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
ANSWER: d
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page
u 5
u Co5 2
, Name Clas Dat
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is calle
u5 u 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u 5 u5 u 5 u5 u 5 u5
d a(n
u5
)
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
u5 nu 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 nu 5 u 5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: e
9. A quantitative observation
u5 u 5
a. contains a number and a unit u5 u 5 u5 u5 u5
b. does not contain a number u5 ou 5 u5 u5
c. always makes a comparison u5 u5 ou 5
d. must be obtained through experimentation
u5 u5 u5 u 5
e. is none of these
u5 u5 u5
ANSWER: a
10. Which of the following is an example of a quantitative observation?
u5 u5 u5 u5 u5 u5 u5 u5 u5 u 5
a. The piece of metal is longer than the piece of wood.
u5 u5 u5 u 5 u 5 u5 u5 u5 u5 u5
b. Solution 1 is much darker than solution 2. u5 u5 u5 u5 u5 u5 u5
c. Theliquid in beaker A is blue. u5 u5 u5 u5 u5
d. The temperature of the liquid is 60°C.
u5 u5 u5 u5 nu 5 u 5
e. At least two of the above (A-D) are quantitative observations.
u5 u5 u5 u5 u5 u5 u5 u5 u 5
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page u 5
u Co5 3
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
1. Define the following terms: u5 u5 u 5
a. science
b. chemistry
ANSWER: a. Science - u5 u5
a framework for gaining and organizing knowledge. It is a procedure for processing and understan di
o u5 u5 u5 u5 u5 u5 u5 u5 i@ u5 u5 u5 u5 u5
n g certain information. u5 u 5 u 5
b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5
2. Define the following terms: u5 u5 u 5
a. scientific method u5
b. natural law u5
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
u5 u5 nu 5 u5 u5 u5 u5 u5 u5 u5
b. Natural law - a statement describing observed behavior. u5 u5 u5 u5 u5 u5 nu 5
c. Hypothesis - a possible explanation for an observation. u5 u5 u5 u5 u5 u5 u5
d. Theory - u5
a set of testsed hypotheses that gives an explanation for some behavior or observation (also called a
ou5 u5 u5 u5 u5 u 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u
m odel). 5 u 5
3. Which of the following is not au5 u5 u5 u5 u 5 u5 ou 5 step in the scientific method?
u5 u5 u 5 u5
a. Make an observation. u5 u5
b. Formulate a hypothesis. u5 u5
c. Perform an experiment. u5 u5
d. Change results to agree with your hypothesis.
u5 u5 u5 u5 u5 u5
e. Develop a theory (or model). u5 u5 u5 u5
ANSWER: d
4. A u5 is a summary of observed behavior, and a
u 5 u5 u 5 u 5 u 5 u 5 u 5 u5 is an explanation of behavior.
u5 u5 u5 u5
a. law, measurement u5
b. theory, scientific method u5 u5
c. theory, law u5
d. law, theory u5
e. hypothesis, theory u5
ANSWER: d
5. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature,
u5 u5 u5 u5 u5 u5 u5 u5 nu5 u5 u5 u5 u5 u5
is c a lled a(n)
u 5 u5 u 5 u 5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page u 5
u Co5 1
,Name Clas Dat
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
ANSWER: d
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page
u 5
u Co5 2
, Name Clas Dat
: s: e:
Chapter 01 - Chemistry: AnIntroduction
u5 u5 u5 u5 u5
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is calle
u5 u 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u 5 u5 u 5 u5 u 5 u5
d a(n
u5
)
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
u5 nu 5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 u5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
u5 u5 u5 u5 u5 u5 u5 u5 u5 u5 nu 5 u 5
a. observation
b. measurement
c. theory
d. natural law u5
e. experiment
ANSWER: e
9. A quantitative observation
u5 u 5
a. contains a number and a unit u5 u 5 u5 u5 u5
b. does not contain a number u5 ou 5 u5 u5
c. always makes a comparison u5 u5 ou 5
d. must be obtained through experimentation
u5 u5 u5 u 5
e. is none of these
u5 u5 u5
ANSWER: a
10. Which of the following is an example of a quantitative observation?
u5 u5 u5 u5 u5 u5 u5 u5 u5 u 5
a. The piece of metal is longer than the piece of wood.
u5 u5 u5 u 5 u 5 u5 u5 u5 u5 u5
b. Solution 1 is much darker than solution 2. u5 u5 u5 u5 u5 u5 u5
c. Theliquid in beaker A is blue. u5 u5 u5 u5 u5
d. The temperature of the liquid is 60°C.
u5 u5 u5 u5 nu 5 u 5
e. At least two of the above (A-D) are quantitative observations.
u5 u5 u5 u5 u5 u5 u5 u5 u 5
Copyright u 5 Cengage u 5 Learning. u 5 Powered u 5 by Page u 5
u Co5 3
