Chemistry: Matter and Change

Chapter 1: Introduction to Chemistry

Standardized Test Practice

1
What is the radiation blocked by ozone?

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A)infrared
B)microwave
C)ultraviolet
D)alpha
2
What is the unit used to measure ozone in the atmosphere?
A)dobson units
B)pascals
C)kilometers
D)degrees Celsius
3
Look at the graph. In what year did global CFC consumption drop most dramatically?

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A)1986
B)1989
C)1991
D)1996
4
What is the measurement of matter whose value depends on the force of gravity?
A)mass
B)volume
C)energy
D)weight
5
Chemists who study the chemistry of living organisms work in the field of ______________.
A)analytical chemistry
B)physical chemistry
C)organic chemistry
D)biochemistry
6
A branch of chemistry that is concerned with how and why chemicals interact is ______________.
A)analytical chemistry
B)biochemistry
C)theoretical chemistry
D)physical chemistry
7
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In the model shown above, what event first releases chlorine?
A)ultraviolet radiation strikes a CFC (CCl3F)
B)ultraviolet radiation strikes ozone (O3)
C)Oxygen (O) combines with chlorine monoxide (ClO)
D)Chlorine (Cl) combines with ozone (O3)
8
What is the name given to a set of controlled observations that test a proposed explanation?
A)hypothesis
B)experiment
C)theory
D)conclusion
9
A judgment based upon the results of an experiment is a _____________.
A)hypothesis
B)theory
C)variable
D)conclusion
10
A ________ can be used to help visualize microscopic structures and events.
A)variable
B)hypothesis
C)theory
D)model
11
Suppose that you experimentally determine the mass of nylon formed as a result of each of several similar chemical processes. What are the measurements of mass called?
A)qualitative data
B)independent variables
C)controls
D)quantitative data
12
What is the name given to research that is undertaken to solve a specific problem?
A)pure research
B)theoretical research
C)applied research
D)technology
13
The study of Earth's atmospheric ozone and the effect of chlorofluorocarbons on ozone is an example of _____________.
A)technology
B)applied research
C)basic research
D)theoretical research
14
In the laboratory, one should NEVER _______.
A)ask questions
B)know how to contact help
C)wear safety goggles and a lab apron
D)perform experiments without your teacher's permission.
15
Almost every situation you can imagine involves a chemist, because _______.
A)chemists are nosy
B)everything is made of matter
C)chemists are well-paid
D)ozone depletion is a problem
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