Introductory Chemistry 8th Edition by Steven S. Zumdahl - Test Bank

,Name Clas Dat
cm
: s: e:

Chapter 01 -cm cm


Chemistry: An Introduction
1. Define the following terms:
cm cm cm


a. science
b. chemistry
ANSWER: a. Science - cm cm


a framework for gaining and organizing knowledge. It is a procedure for processing and under
cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm


standing certain information. cm cm


b. Chemistry - cm


the science that deals with the matter of the universe and the changes it can undergo.
cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm




2. Define the following terms:
cm cm cm


a. scientific method
cm


b. natural law
cm


c. hypothesis
d. theory
ANSWER: a. Scientific method - the process or steps of scientific inquiry.
cm cm cm cm cm cm cm cm cm cm


b. Natural law - a statement describing observed beha or.
cm cm cm cm cm cm cm cm


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


d. Theory - cm


a set of testsed hypotheses that gives an explanation for some beha or or observation (also
cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm


called a model). cm cm




3. Which of the following is not a step in the scientific method?
cm cm cm cm cm cm cm cm cm cm cm


a. Make an observation. cm cm


b. Formulate a hypothesis. cm cm


c. Perform an experiment. cm cm


d. Change results to agree with your hypothesis.
cm cm cm cm cm cm


e. Develop a theory (or model).
cm cm cm cm



ANSWER: d

4. A cm is a summary of observed beha or, and a
cm cm cm cm cm cm cm cm cm is an explanation of beha or.
cm cm cm cm cm


a. law, measurement cm


b. theory, scientific method cm cm



c. theory, law cm



d. law, theory cm


e. hypothesis, theory cm



ANSWER: d

5. Generally, observed beha or that can be formulated into a statement, sometimes mathematical in natur
cm cm cm cm cm cm cm cm cm cm cm cm cm cm


e, is called a(n)
cm cm cm


a. observation
b. measurement
c. theory
d. natural law cm


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,Name Clas Dat
cm
: s: e:

Chapter 01 -
cm cm


e. experiment
Chemistry: An Introduction
ANSWER: d




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, Name Clas Dat
cm
: s: e:

Chapter 01 - cm cm


Chemistry: An Introduction
6. The statement “The total mass of materials is not affected by a chemical change in those materials” is
cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm


called a(n)
cm


a. observation
b. measurement
c. theory
d. natural law cm



e. experiment
ANSWER: d

7. A set of tested hypotheses than gives an overall explanation of some part of nature, is called a(n)
cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm


a. observation
b. measurement
c. theory
d. natural law cm


e. experiment
ANSWER: c

8. Something done to test a hypothesis that produces new observations is called a(n)
cm cm cm cm cm cm cm cm cm cm cm cm


a. observation
b. measurement
c. theory
d. natural law cm


e. experiment
ANSWER: e

9. A quantitative observation
cm cm


a. contains a number and a unit cm cm cm cm cm


b. does not contain a number cm cm cm cm


c. always makes a comparison
cm cm cm



d. must be obtained through experimentation
cm cm cm cm


e. is none of these
cm cm cm



ANSWER: a

10. Which of the following is an example of a quantitative observation?
cm cm cm cm cm cm cm cm cm cm


a. The piece of metal is longer than the piece of wood.
cm cm cm cm cm cm cm cm cm cm


b. Solution 1 is much darker than solution 2.
cm cm cm cm cm cm cm



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


d. The temperature of the liquid is 60°C.
cm cm cm cm cm cm


e. At least two of the above (A-D) are quantitative observations.
cm cm cm cm cm cm cm cm cm



ANSWER: d

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