Matter—Properties and Changes
Practice Test
1.
Research on solubility as a factor that affects the digestion of foods in humans would be an example of ______________.
a.
fundamental research
b.
technology
c.
applied research
d.
theoretical research
2.
The type of data that is descriptive in nature is ___________.
a.
quantitative data
b.
qualitative data
c.
hypothetical data
d.
random data
3.
A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.
a.
chromatography
b.
filtration
c.
crystallization
d.
distillation
4.
Which of the following lists units in increasing order by volume?
a.
milliliter < centiliter < microliter < kiloliter < liter
b.
centiliter < milliliter < liter < kiloliter < microliter
c.
microliter < milliliter < centiliter < liter < kiloliter
d.
microliter < kiloliter < centiliter < liter < milliliter
5.
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
6.
Which of the following is a compound?
a.
crude oil
b.
steel
c.
water
d.
neon
7.
How would you read the following chemical reaction?
2Cu + O
2
→ 2CuO
a.
copper yields oxygen and copper(II) oxide
b.
copper and oxygen yield copper(II) oxide
c.
copper(II) oxide yields oxygen and copper
d.
oxygen yields copper and copper(II) oxide
8.
How many kilograms of lead are present in 426 pounds of lead? Each kilogram contains 2.20 pounds.
a.
193.6 kg
b.
937.2 kg
c.
194 kg
d.
937 kg
9.
Elements on the left side of the periodic table are _______.
a.
metals
b.
metalloids
c.
compounds
d.
nonmetals
10.
How can the law of conservation of mass apply to a burning log, if all that remains of it is ash?
a.
The ash has the same mass as the log, although a large percentage of it blows away.
b.
The masses of the gases and water vapor released into the air by the combustion reaction plus the mass of ash equal the mass of the log before burning.
c.
The law of conservation of mass applies to substitution and displacement reactions, but not to combustion reactions.
d.
The law of conservation of mass applies to changes of state but not to chemical reactions.
11.
What is the area in square millimeters of a rectangle that is 7.431 cm long and 23.33 mm wide?
a.
173.4 mm
2
b.
17.34 mm
2
c.
1734 mm
2
d.
1.734 mm
2
12.
A heterogeneous mixture is poured through a piece of filter paper that is positioned over a beaker. What is the substance that is collected in the beaker?
a.
Not enough information is given.
b.
solid
c.
solution
d.
heterogeneous mixture
13.
The representation of data on graph that resembles a pizza is a _________.
a.
circle graph
b.
line graph
c.
bar graph
d.
inverse
14.
How is the slope of a linear graph calculated?
a.
slope = (y
2
– y
1
) x 100
b.
slope = (x
2
– x
1
) / 100
c.
slope = (y
2
– y
1
) / (x
2
– x
1
)
d.
slope = (x
2
– x
1
) / (y
2
– y
1
)
15.
What type of property is observed when milk sours?
a.
a chemical property
b.
an intensive property
c.
a physical property
d.
an extensive property
16.
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.
quantitative data
c.
controls
d.
independent variables
17.
Which of the following is a vapor?
a.
hydrogen
b.
oxygen
c.
steam
d.
helium
18.
Which of the following numbers has 4 significant figures?
a.
0.0521
b.
0.05208
c.
0.52089
d.
0.052
19.
Which of the following numbers is equal to 2.70 x 10
-4
?
a.
0.675
b.
270
c.
0.00027
d.
27 x 10
-3
20.
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.
5
c.
3
d.
4
