Chapter 2:
Data Analysis
Practice Test
1.
Which of the following lists units in increasing order by volume?
a.
centiliter < milliliter < liter < kiloliter < microliter
b.
microliter < milliliter < centiliter < liter < kiloliter
c.
milliliter < centiliter < microliter < kiloliter < liter
d.
microliter < kiloliter < centiliter < liter < milliliter
Hint
2.
The representation of data on graph that resembles a pizza is a _________.
a.
circle graph
b.
line graph
c.
bar graph
d.
inverse
Hint
3.
The closeness of an experimental value to an accepted value is its ______.
a.
precision
b.
error
c.
percent error
d.
accuracy
Hint
4.
How many kilograms of lead are present in 426 pounds of lead? Each kilogram contains 2.20 pounds.
a.
194 kg
b.
937 kg
c.
193.6 kg
d.
937.2 kg
Hint
5.
What is the thickness of a rectangular piece of aluminum foil with a mass of 0.132 g, a length of 5.40 cm, and a width of 3.26 cm? The density of aluminum is 2.70 g/cm
3
.
a.
0.116 cm
b.
3.36 × 10
-5
cm
c.
0.00278 cm
d.
360 cm
Hint
6.
Which of the following numbers has 4 significant figures?
a.
0.05208
b.
0.0520
c.
0.52089
d.
0.0521
Hint
7.
Which of the following is not a significant figure?
a.
zeros to the left of the first significant digit
b.
a zero between two digits that have values of 1 through 9
c.
zeros to the right of a significant digit when a decimal point is present
d.
a value of 1 through 9
Hint
8.
How is the slope of a linear graph calculated?
a.
slope = (
x
2
-
x
1
)/(
y
2
-
y
1)
b.
slope = (
y
2
-
y
1
) × 100
c.
slope = (
x
2
-
x
1
)/100
d.
slope = (
y
2
-
y
1
)/ (
x
2
-
x
1
)
Hint
9.
A unit that is defined by a combination of base units is a(n) __________.
a.
metric unit
b.
English unit
c.
SI unit
d.
derived unit
Hint
10.
Perform the indicated mathematical operations and report the answer to the proper number of significant figures.
( 21.55 × 4.12 ) ÷42.42
a.
2.09
b.
2.0930
c.
2.093
d.
2.1
Hint
11.
The sum of 4.824 + 2.03 + 4.72319 + 123.4567 + 111.1 expressed to the proper number of significant figures is ____________.
a.
246.134
b.
246.13
c.
246
d.
246.1
Hint
12.
What is the percent error if a measured value is 24.59 g/mL and the accepted value is 25.49 g/mL?
a.
103.7%
b.
3.66%
c.
96.47%
d.
3.531%
Hint
13.
What volume is occupied by 16.4 g of mercury? The density of mercury is 13.6 g/mL.
a.
30.0 mL
b.
1.21 mL
c.
0.829 mL
d.
223 mL
Hint
14.
How many milliliters are there in 1.0 microliter?
a.
1.0 × 10
-3
mL
b.
1.0 × 10
-1
mL
c.
1.0 × 10
-4
mL
d.
1.0 × 10
-2
mL
Hint
15.
Below is a list of
physical properties
and the
base unit
in the SI system used to measure each property. Which unit is not the correct base unit?
a.
time----------second
b.
length----------meter
c.
mass----------gram
d.
temperature----------kelvin
Hint
16.
Dimensional analysis is a method of problem-solving that focuses on ________ .
a.
precision
b.
units
c.
error
d.
accuracy
Hint
17.
What is the density of a sample with a mass of 24.47 g and a volume of 13.2 mL?
a.
1.9 g/mL
b.
1.85 g/mL
c.
1.8537 g/mL
d.
1.854 g/mL
Hint
18.
A measure of the closeness of a series of measurements is their ___________ .
a.
percent error
b.
accuracy
c.
error
d.
precision
Hint
19.
What scale provides the base unit for temperature in the SI system?
a.
Centigrade scale
b.
Celsius scale
c.
Kelvin scale
d.
Fahrenheit scale
Hint
20.
How many significant figures will there be when the density value is calculated from the following data? mass = 24.47 g; volume =13.2 mL
a.
4
b.
2
c.
5
d.
3
Hint
