Chemistry: Matter and Change

Chapter 2: Analyzing Data

Chapter Test Practice

1
In the SI system of measurement, there are seven ________ units
A)metric
B)English
C)derived
D)base
2
What is the temperature 51°C expressed in kelvins?
A)273.0 K
B)222 K
C)324° K
D)324 K
3
Use the conversion factor above to find the meters in 2.7 x 103 kilometers.

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A)2.7 x 105 m
B)2.7 x 10-3 m
C)2.7 m
D)2.7 x 106 m
4
Which of the following conversion factors would be most useful in converting miles per gallon to kilometers per liter?
A)1 gallon/4 quarts
B)1 liter/1000 ml
C)1 mile/0.62 km
D)1 000 m/1 km
5
Which of the following numbers is equal to 2.70 x 10-4?
A)0.00027
B)0.675
C)27 x 10-3
D)270
6
The closeness of an experimental value to an accepted value is its ______.
A)accuracy
B)precision
C)percent error
D)error
7
How many significant figures will there be when the density value is calculated from the following data? mass = 24.47g; volume =13.2 mL
A)2
B)3
C)4
D)5
8
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Look at the graph above. Which two substances are responsible for over half the chlorine in the stratosphere?
A)CFC-12 and Methyl chloride
B)HCFC-22 and CFC-11
C)Carbon tetrachloride and Methyl chloroform
D)CFC-12 and CFC-11
9
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Look at the graph above. What is the temperature at an elevation of 200 meters?
A)20 degrees Celsius
B)100 degrees Celsius
C)19 degrees Celsius
D)17 degrees Celsius
10
How is the slope of a linear graph calculated?
A)slope = (y2 – y1) x 100
B)slope = (x2 – x1) / 100
C)slope = (x2 – x1) / (y2 – y1)
D)slope = (y2 – y1) / (x2 – x1)
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