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Earth Science- Chapters 2 + 3
Test Description: Rocks and Minerals
Instructions: Answer all questions to get your test result.
1) This also tells you the number of protons in an atom.
A
Valence electrons
B
Atomic number
C
Atomic mass
D
Family number
2) Pure substance that cannot be broken down into simpler substances
A
Atom
B
Isotope
C
Valence electron
D
Element
3) Type of bond where electrons are shared.
A
Covalent
B
Ionic
4) The number of protons in an atom of calcium.
A
20
B
29
C
6
D
17
5) True or False: Silicates are the most common mineral group.
A
False
B
True
6) The number of valence electrons in an atom of carbon.
A
12
B
4
C
20
D
6
7) The hardest mineral.
A
Quartz
B
Diamond
C
Galena
D
Talc
8) Color of a mineral in its powdered form.
A
Density
B
Hardness
C
Streak
D
Luster
9) True or False: Extrusive igneous rocks from within Earth.
A
True
B
False
10) Type of rock that forms from weathering and erosion.
A
Sedimentary rock
B
Lava
C
Metamorphic rock
D
Igneous rock
11) Table salt is an example of this type of bond.
A
Covalent
B
Ionic
12) The tendency of a mineral to break along flat, even surfaces.
A
Fracture
B
Cleavage
C
Luster
D
Streak
13) A mineral has a volume of 25ml and a mass of 45g. Which of the following represents its density?
A
0.55
B
6.53
C
2.45
D
1.8
14) Used to describe how light is reflected from the surface of a mineral.
A
Luster
B
Fracture
C
Hardness
D
Streak
15) Isotopes have the same number of protons but different number of
A
electrons
B
neutrons
16) True or False: Metamorphic rocks form from pre-existing rock
A
False
B
True
17) The number of valence electrons most atoms need to be stable.
A
2
B
4
C
6
D
8
18) True or False: Magma is above Earth's surface.
A
True
B
False
*select an answer for all questions
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