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Ch 2, 3 Of 4
Test Description: Ch 2
Instructions: Answer all questions to get your test result.
1) The appearance of quality of light reflected from the surface of a mineral is called
A
luster
B
hardness
C
cleavage
D
streak
2) Mohs scale is used to determine what property of minerals
A
luster
B
hardness
C
cleavage
D
density
3) What is the hardness of an unknown mineral that scratches glass, but will not scratch quartz?
A
6.0
B
8.0
C
7.5
D
5.0
4) The tendency of minerals to break along smooth falt surfaces is called
A
crystal form
B
streak
C
cleavage
D
fracture
5) What is the uneven breakage of a mineral called?
A
crystal form
B
cleavage
C
fracture
D
hardness
6) What determines whether a mineral will show cleavage or break in an irregular fractures?
A
hardness
B
external shape
C
internal atomic structure
D
density
7) What is the density of a mineral with a mass of 41.2 g and a volume of 8.2 cm3?
A
49.4 g/cm3
B
5.02 g/cm3
C
0.19 g/cm3
D
337.8 g/cm3
8) How could you determine if a sample of gold is pure>
A
determine if the sample will fizz in contact with HCl acid
B
compare sample density with that of pure gold
C
compare samples color with that of pure gold
D
determine if the sample is magnetic
9) What property can be used to distinguish talc and gypsum?
A
talc has a soapy feel
B
Gypsum can scratch glass
C
gypsum has a soapy feel
D
talc fizzes with HCl acid
10) What determines the properties of minerals?
A
size and shape
B
composition and structure
C
composition and age
D
structure and size
*select an answer for all questions
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