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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
A lead doorstop weighs 1.62 kg
B
Water boils at 100 C
C
The nugget had a volume of 4.31 mL
D
Measure a piece of aluminum foil to 20 inches to sculpt a mole for Mole Day
2) Select the extensive physical property from the list below.
A
the aluminum cylinder had a calculated area of 2.37 cm2
B
the density of an aluminum bar was determined to be 2.70 g/cm3
C
ethanol is in the liquid state at 70 C
D
the melting point of water is 0 C
3) Given the material, 3 Jb2Sm, how would it be classified?
A
heterogeneous mixture
B
compound
C
element
D
homogeneous mixture
4) How many molecules are present in this material: 2 Sm2 + 3 R2Sm
A
13
B
5
C
9
D
3
5) Which of the following can be separated by physical means?
A
element
B
compound
C
mixture
D
both elements and compounds
6) Filtration separates components of a mixture by this property:
A
boiling points
B
density
C
solubility
D
sizes of particles
7) A beaker of some material contains three phases. The material is (a)
A
element
B
homogeneous mixture
C
hetergeneous mixture
D
compound
8) Matter that is uniform throughout in definite proportions would be classified as a(n)
A
substance
B
homogeneous mixture
C
heterogeneous mixture
D
solution
9) Elements and compounds are classified as
A
pure substances
B
homogeneous mixtures
C
heterogeneous mixtures
D
solutions
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 kinetic energy of the particles is decreasing
B
the substance is first melting then boiling
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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