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Matter
Test Description: Taks practice
Instructions: Answer all questions to get your test result.
1) As the viscosity of a liquid increases, the liquid --
A
evaporates more quickly
B
pours more slowly
C
conducts electricity
D
forms a precipitate
2) Which of these is the most appropriate unit of measure for reporting the density of a solid?
A
g/cm
B
g/cm 3
C
g/L 2
D
g/mm 2
3) The buoyant force that a fluid exerts on objects is increased when there is an increase in the fluid’s —
A
solubility
B
density
C
acidity
D
clarity
4) Rust (Fe2O3) forms on an iron (Fe) pipe after prolonged exposure to humid air. What type of change does this illustrate?
A
Physical
B
Chemical
C
Physical
D
Mechanical
5) Sheets of ice containing mostly pure water can be formed by decreasing the temperature of saltwater. Which of these best describes this change?
A
Nuclear change
B
Chemical change
C
Physical change
D
Atomic change
6) Students in a chemistry lab measure the time it takes four different 100 mL solutions to pass through a hole in the bottom of a cup. Which of the following properties of the solutions is most likely being measured?
A
Buoyancy
B
Volume
C
Mass
D
Viscosity
7) A sample of water from a stream has a greater density than a sample of distilled water. Which is the best explanation for the difference in density?
A
Streams have kinetic energy.
B
Streams can contain dissolved salts.
C
Distilled water has a neutral pH.
D
Distilled water can contain dissolved gases.
8) Which of these are composed of two or more different substances that are chemically combined in a definite ratio?
A
Compounds
B
Solutions
C
Elements
D
Mixtures
9) Which of these changes in rocks is a physical change?
A
Carbonic acid weathering limestone
B
An ice wedge shattering a slab of shale
C
Acid rain damaging marble
D
Iron in rock combining with oxygen to form hematite
10) Which of the following processes is an example of a physical change associated with an oak tree?
A
Evaporation of water from the surfaces of leaves
B
Starches and sugars being broken down during energy production
C
Decomposition of bark by bracket fungi
D
Water and carbon dioxide being converted to glucose
*select an answer for all questions
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