TEST BANK FOR Introductory Chemistry 8th Edition by Steven Zumdahl , Donald J. DeCoste ISBN:978-1285452821 COMPLETE GUIDE ALL CHAPTERS COVERED 100% VERIFIED A+ GRADE ASURED!!!!! NEW LATEST UPDATE!!!!!

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Chapter 01 - Chemistry: An Introduction
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1. Define the following terms:
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a. science
b. chemistry
ANSWER: a. Science - ol ol



a framework for gaining and organizing knowledge. It is a procedure for processing and understandin
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g certain information. ol ol



b. Chemistry - the science that deals with the matter of the universe and the changes it can undergo.
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2. Define the following terms:
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a. scientific method ol



b. natural law ol



c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
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b. Natural law - a statement describing observed behavior. ol ol ol ol ol ol ol



c. Hypothesis - a possible explanation for an observation. ol ol ol ol ol ol ol



d. Theory - ol



a set of testsed hypotheses that gives an explanation for some behavior or observation (also called a
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model).

3. Which of the following is not a step in the scientific method?
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a. Make an observation. ol ol




b. Formulate a hypothesis. ol ol




c. Perform an experiment. ol ol




d. Change results to agree with your hypothesis.
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e. Develop a theory (or model). ol ol ol ol




ANSWER: d

4. A is a summary of observed behavior, and a
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a. law, measurement ol




b. theory, scientific method ol ol




c. theory, law ol




d. law, theory ol




e. hypothesis, theory ol




ANSWER: d

5. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is ca
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lled a(n)
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a. observation
b. measurement
c. theory
d. natural law ol




e. experiment
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,Name Clas Dat
: s: e:

Chapter 01 - Chemistry: An Introduction
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ANSWER: d




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, Name Clas Dat
: s: e:

Chapter 01 - Chemistry: An Introduction
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6. The statement “The total mass of materials is not affected by a chemical change in those materials” is called a(n
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)
a. observation
b. measurement
c. theory
d. natural law ol




e. experiment
ANSWER: d

7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
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a. observation
b. measurement
c. theory
d. natural law ol




e. experiment
ANSWER: c

8. Something done to test a hypothesis that produces new observations is called a(n)
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a. observation
b. measurement
c. theory
d. natural law ol




e. experiment
ANSWER: e

9. A quantitative observation
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a. contains a number and a unit ol ol ol ol ol




b. does not contain a numberol ol ol ol




c. always makes a comparison ol ol ol




d. must be obtained through experimentation
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e. is none of these
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ANSWER: a

10. Which of the following is an example of a quantitative observation?
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a. The piece of metal is longer than the piece of wood.
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b. Solution 1 is much darker than solution 2. ol ol ol ol ol ol ol




c. The liquid in beaker A is blue. ol ol ol ol ol ol




d. The temperature of the liquid is 60°C.
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e. At least two of the above (A-D) are quantitative observations.
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ANSWER: d

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