Georgia Science Grade 6

Chapter 3: Minerals

CRCT Practice

1
To which crystal system does the crystal shown belong?
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A)hexagonal
B)cubic
C)triclinic
D)monoclinic
2
Which of the following is a common rockforming mineral?
A)azurite
B)gold
C)quartz
D)diamond
3
Which term refers to the resistance of a mineral to scratching?
A)hardness
B)specific gravity
C)luster
D)fracture
4
Which is the most abundant element in Earth's crust?
A)silicon
B)manganese
C)iron
D)oxygen
5
Which mineral in the table is softest?
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A)diamond
B)feldspar
C)talc
D)gypsum
6
Which mineral will scratch feldspar but not topaz?
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A)quartz
B)calcite
C)apatite
D)diamond
7
Which of these forms in cracks or along faults?
A)bauxite
B)silicates
C)vein minerals
D)rock-forming minerals
8
Which is a special property of the mineral magnetite?
A)attracted by a magnet
B)fizzes with dilute hydrochloric acid
C)forms a double image
D)has a salty taste
9
Which causes some minerals to break along smooth, flat surfaces?
A)streak
B)cleavage
C)luster
D)fracture
10
How many grams is the Uncle Sam diamond?
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A)202
B)40.6
C)20.2
D)8.08
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