Data Analysis
Practice Test
1.
Which of the following numbers is equal to 2.70 x 10
-4
?
a.
0.675
b.
27 x 10
-3
c.
0.00027
d.
270
2.
Ozone is found in the _____________________.
a.
ionosphere
b.
troposphere
c.
stratosphere
d.
mesosphere
3.
What is the area in square millimeters of a rectangle that is 7.431 cm long and 23.33 mm wide?
a.
1734 mm
2
b.
17.34 mm
2
c.
1.734 mm
2
d.
173.4 mm
2
4.
The closeness of an experimental value to an accepted value is its ______.
a.
error
b.
accuracy
c.
percent error
d.
precision
5.
Which of the following releases matter?
a.
turning on an electric hot plate
b.
turbines spinning in a power plant
c.
picking up iron filings with a magnet
d.
engaging a car exhaust system
6.
What is the percent error if a measured value is 24.59 g/mL and the accepted value is 25.49 g/mL?
a.
0.9647
b.
0.0366
c.
3.5%
d.
1.037
7.
Which of the following physical properties is not paired with the correct SI base unit or measurement?
a.
temperature: Kelvin
b.
time: second
c.
length: meter
d.
mass: gram
8.
A chlorofluorocarbon is a chemical that is made of _____________.
a.
chloron, fluoron, and carbon
b.
carbon and hydrogen
c.
carbon and oxygen
d.
chlorine, fluorine, and carbon
9.
The general term for a systematic approach used in scientific study is _______________.
a.
the scientific controversy
b.
quantitative analysis
c.
qualitative analysis
d.
the scientific method
10.
Anything that has mass and takes up space is _________.
a.
volume
b.
weight
c.
matter
d.
pressure
11.
How many kilograms of lead are present in 426 pounds of lead? Each kilogram contains 2.20 pounds.
a.
937 kg
b.
193.6 kg
c.
194 kg
d.
937.2 kg
12.
The sum of 4.824 + 2.03 + 4.72319 + 123.4567 + 111.1 expressed to the proper number of significant figures is ____________.
a.
246.13
b.
246.1
c.
246.134
d.
246
13.
The representation of data on graph that resembles a pizza is a _________.
a.
circle graph
b.
inverse
c.
bar graph
d.
line graph
14.
Two items that must be worn during any laboratory experiment are ___________.
a.
safety goggles and a lab apron
b.
rubber gloves and a face shield
c.
safety goggles and fire-proof mitts
d.
gloves and a lab apron
15.
Which of the following materials was discovered by chance during research on artificial fiber creation?
a.
nylon
b.
lysozyme
c.
ozone
d.
silk
16.
The variable that you plan to change during the course of an experiment is ___________.
a.
a control
b.
the dependent variable
c.
a constant
d.
the independent variable
17.
What would you expect to result from a decrease in the amount of ozone in the stratosphere?
a.
decrease in the number of individual oxygen particles
b.
decrease in the amount of oxygen in the troposphere
c.
increase in the amount of oxygen in the troposphere
d.
increase in the number of individual oxygen particles
18.
How is the slope of a linear graph calculated?
a.
slope = (x
2
– x
1
) / 100
b.
slope = (y
2
– y
1
) x 100
c.
slope = (y
2
– y
1
) / (x
2
– x
1
)
d.
slope = (x
2
– x
1
) / (y
2
– y
1
)
19.
Which of the following lists units in increasing order by volume?
a.
microliter < milliliter < centiliter < liter < kiloliter
b.
microliter < kiloliter < centiliter < liter < milliliter
c.
milliliter < centiliter < microliter < kiloliter < liter
d.
centiliter < milliliter < liter < kiloliter < microliter
20.
How many milliliters are there in 1.0 microliter?
a.
1.0 x 10
-4
mL
b.
1.0 x 10
-1
mL
c.
1.0 x 10
-3
mL
d.
1.0 x 10
-2
mL
21.
A tentative explanation for a series of observations is a __________.
a.
hypothesis
b.
model
c.
law
d.
theory
22.
Chemists who study the chemistry of living organisms work in the field of ______________.
a.
organic chemistry
b.
analytical chemistry
c.
physical chemistry
d.
biochemistry
23.
What is the name given to research that is undertaken to solve a specific problem?
a.
theoretical research
b.
technology
c.
pure research
d.
applied research
