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