Name Clas Dat
n2
: s: e:
Chapter 01 -
n2 n2
Chemistry: An Introduction
n2 n2 n2
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen21
ro.
,Name Clas Dat
n2
: s: e:
Chapter 01 - n2 n2
n2 Define the An
1.Chemistry: following
n2 terms:
Introduction n2
n2 n2 n2
a. science
b. chemistry
ANSWER: a. Science - n2 n2
a framework for gaining and organizing knowledge. It is a procedure for processing and understa
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
nding certain information. n2 n2
b. Chemistry - n2
the science that deals with the matter of the universe and the changes it can undergo.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
2. Define the following terms:
n2 n2 n2
a. scientific method n2
b. natural law n2
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
b. Natural law - a statement describing observed beha or. n2 n2 n2 n2 n2 n2 n2 n2
c. Hypothesis - a possible explanation for an observation. n2 n2 n2 n2 n2 n2 n2
d. Theory - n2
a set of testsed hypotheses that gives an explanation for some beha or or observation (also call
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
ed a model). n2 n2
3. Which of the following is not a step in the scientific method?
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. Make an observation. n2 n2
b. Formulate a hypothesis. n2 n2
c. Perform an experiment. n2 n2
d. Change results to agree with your hypothesis.
n2 n2 n2 n2 n2 n2
e. Develop a theory (or model). n2 n2 n2 n2
ANSWER: d
4. A n2 is a summary of observed beha or, and a
n2 n2 n2 n2 n2 n2 n2 n2 n2 is an explanation of beha or.
n2 n2 n2 n2 n2
a. law, measurement n2
b. theory, scientific method n2 n2
c. theory, law n2
d. law, theory n2
e. hypothesis, theory n2
ANSWER: d
5. Generally, observed beha or that can be formulated into a statement, sometimes mathematical in nature, i
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
s called a(n)
n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen22
ro.
,Name Clas Dat
n2
: s: e:
Chapter 01 -
n2 n2
n2 e.
Chemistry: An Introduction
n2 n2 experiment
ANSWER: d
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen23
ro.
, Name Clas Dat
n2
: s: e:
Chapter 01 - n2 n2
Chemistry: An Introduction
n2 n2 n2
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is cal
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
led a(n)
n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: e
9. A quantitative observation
n2 n2
a. contains a number and a unit n2 n2 n2 n2 n2
b. does not contain a number n2 n2 n2 n2
c. always makes a comparison n2 n2 n2
d. must be obtained through experimentation
n2 n2 n2 n2
e. is none of these
n2 n2 n2
ANSWER: a
10. Which of the following is an example of a quantitative observation?
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. The piece of metal is longer than the piece of wood.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
b. Solution 1 is much darker than solution 2. n2 n2 n2 n2 n2 n2 n2
c. The liquid in beaker A is blue.
n2 n2 n2 n2 n2 n2
d. The temperature of the liquid is 60°C.
n2 n2 n2 n2 n2 n2
e. At least two of the above (A-D) are quantitative observations.
n2 n2 n2 n2 n2 n2 n2 n2 n2
ANSWER: d
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen24
ro.
n2
: s: e:
Chapter 01 -
n2 n2
Chemistry: An Introduction
n2 n2 n2
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen21
ro.
,Name Clas Dat
n2
: s: e:
Chapter 01 - n2 n2
n2 Define the An
1.Chemistry: following
n2 terms:
Introduction n2
n2 n2 n2
a. science
b. chemistry
ANSWER: a. Science - n2 n2
a framework for gaining and organizing knowledge. It is a procedure for processing and understa
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
nding certain information. n2 n2
b. Chemistry - n2
the science that deals with the matter of the universe and the changes it can undergo.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
2. Define the following terms:
n2 n2 n2
a. scientific method n2
b. natural law n2
c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
b. Natural law - a statement describing observed beha or. n2 n2 n2 n2 n2 n2 n2 n2
c. Hypothesis - a possible explanation for an observation. n2 n2 n2 n2 n2 n2 n2
d. Theory - n2
a set of testsed hypotheses that gives an explanation for some beha or or observation (also call
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
ed a model). n2 n2
3. Which of the following is not a step in the scientific method?
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. Make an observation. n2 n2
b. Formulate a hypothesis. n2 n2
c. Perform an experiment. n2 n2
d. Change results to agree with your hypothesis.
n2 n2 n2 n2 n2 n2
e. Develop a theory (or model). n2 n2 n2 n2
ANSWER: d
4. A n2 is a summary of observed beha or, and a
n2 n2 n2 n2 n2 n2 n2 n2 n2 is an explanation of beha or.
n2 n2 n2 n2 n2
a. law, measurement n2
b. theory, scientific method n2 n2
c. theory, law n2
d. law, theory n2
e. hypothesis, theory n2
ANSWER: d
5. Generally, observed beha or that can be formulated into a statement, sometimes mathematical in nature, i
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
s called a(n)
n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen22
ro.
,Name Clas Dat
n2
: s: e:
Chapter 01 -
n2 n2
n2 e.
Chemistry: An Introduction
n2 n2 experiment
ANSWER: d
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen23
ro.
, Name Clas Dat
n2
: s: e:
Chapter 01 - n2 n2
Chemistry: An Introduction
n2 n2 n2
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is cal
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
led a(n)
n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: d
7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: c
8. Something done to test a hypothesis that produces new observations is called a(n)
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. observation
b. measurement
c. theory
d. natural law n2
e. experiment
ANSWER: e
9. A quantitative observation
n2 n2
a. contains a number and a unit n2 n2 n2 n2 n2
b. does not contain a number n2 n2 n2 n2
c. always makes a comparison n2 n2 n2
d. must be obtained through experimentation
n2 n2 n2 n2
e. is none of these
n2 n2 n2
ANSWER: a
10. Which of the following is an example of a quantitative observation?
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
a. The piece of metal is longer than the piece of wood.
n2 n2 n2 n2 n2 n2 n2 n2 n2 n2
b. Solution 1 is much darker than solution 2. n2 n2 n2 n2 n2 n2 n2
c. The liquid in beaker A is blue.
n2 n2 n2 n2 n2 n2
d. The temperature of the liquid is 60°C.
n2 n2 n2 n2 n2 n2
e. At least two of the above (A-D) are quantitative observations.
n2 n2 n2 n2 n2 n2 n2 n2 n2
ANSWER: d
Copyrightn2Cengagen2Learning.n2Poweredn2byn2Cogne Pagen24
ro.
