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Matter Review 2
Test Description: Properties of matter; law of conservation of mass; classification of matter;
Instructions: Answer all questions to get your test result.
1) Select the intensive physical property from the list below.
A
Water boils at 100 C
B
Measure a piece of aluminum foil to 20 inches to sculpt a mole for Mole Day
C
The nugget had a volume of 4.31 mL
D
A lead doorstop weighs 1.62 kg
2) Select the extensive physical property from the list below.
A
the density of an aluminum bar was determined to be 2.70 g/cm3
B
ethanol is in the liquid state at 70 C
C
the aluminum cylinder had a calculated area of 2.37 cm2
D
the melting point of water is 0 C
3) Given the material, 3 Jb2Sm, how would it be classified?
A
homogeneous mixture
B
compound
C
heterogeneous mixture
D
element
4) How many molecules are present in this material: 2 Sm2 + 3 R2Sm
A
3
B
5
C
9
D
13
5) Which of the following can be separated by physical means?
A
compound
B
element
C
both elements and compounds
D
mixture
6) Filtration separates components of a mixture by this property:
A
boiling points
B
sizes of particles
C
density
D
solubility
7) A beaker of some material contains three phases. The material is (a)
A
hetergeneous mixture
B
compound
C
homogeneous mixture
D
element
8) Matter that is uniform throughout in definite proportions would be classified as a(n)
A
heterogeneous mixture
B
solution
C
substance
D
homogeneous mixture
9) Elements and compounds are classified as
A
solutions
B
pure substances
C
homogeneous mixtures
D
heterogeneous mixtures
10) You are evaluating a cooling curve of time vs temperature for ethanol. You notice that the temperature is stationary for several minutes at both -17 C and 78 C. Account for this anomaly.
A
the substance is first melting then boiling
B
the kinetic energy of the particles is decreasing
C
the heat source has been removed from beneath the container
D
the substance is in transition from one state of matter to another
*select an answer for all questions
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