Chemistry: Matter and Change

Chapter 1: Introduction to Chemistry

Chapter Test Practice

1
What would you expect to result from a decrease in the amount of ozone in the stratosphere?

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A)decrease in the amount of oxygen in the troposphere
B)decrease in the number of individual oxygen particles
C)increase in the amount of oxygen in the troposphere
D)increase in the number of individual oxygen particles
2
Look at the graph. During what year did the increase in CFC-11 concentration begin to level out?

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A)1989
B)1991
C)1990
D)1984
3
Why were chlorofluorocarbons first developed?
A)to destroy the ozone layer
B)for use in plastic foam
C)for use as spray can propellants
D)to replace toxic gases in refrigerators
4
Which of the following releases matter?

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A)engaging a car exhaust system
B)picking up iron filings with a magnet
C)turbines spinning in a power plant
D)turning on an electric hot plate
5
Why can an object's weight vary with location but its mass cannot?

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A)Determinations of mass account for varying gravitational pulls in different locations.
B)Mass is a measure of the amount of matter in an object; weight is not.
C)Systems of measurement vary with location.
D)Weight is a measure of both mass and the effect of Earth's gravitational pull on the matter. Mass measures only the amount of matter.
6
The general term for a systematic approach used in scientific study is ___.
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A)the scientific method
B)qualitative analysis
C)quantitative analysis
D)the scientific controversy
7
When an explanation has been supported by many experiments, the explanation is a __________.
A)hypothesis
B)theory
C)law
D)model
8
Two items that must be worn during any laboratory experiment are ___________.
A)safety goggles and a lab apron
B)safety goggles and fire-proof mitts
C)gloves and a lab apron
D)rubber gloves and a face shield
9
Research that is conducted for the sake of increasing fundamental knowledge is __________.
A)technology
B)applied research
C)pure research
D)theoretical research
10
Research on solubility as a factor that affects the digestion of foods in humans would be an example of ______________.
A)technology
B)fundamental research
C)applied research
D)theoretical research
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