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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
Atomic mass
B
Atomic number
C
Valence electrons
D
Family number
2) Pure substance that cannot be broken down into simpler substances
A
Valence electron
B
Element
C
Atom
D
Isotope
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
17
C
6
D
29
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
20
C
4
D
6
7) The hardest mineral.
A
Talc
B
Galena
C
Diamond
D
Quartz
8) Color of a mineral in its powdered form.
A
Hardness
B
Luster
C
Density
D
Streak
9) True or False: Extrusive igneous rocks from within Earth.
A
False
B
True
10) Type of rock that forms from weathering and erosion.
A
Metamorphic rock
B
Igneous rock
C
Sedimentary rock
D
Lava
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
Luster
B
Streak
C
Fracture
D
Cleavage
13) A mineral has a volume of 25ml and a mass of 45g. Which of the following represents its density?
A
2.45
B
6.53
C
1.8
D
0.55
14) Used to describe how light is reflected from the surface of a mineral.
A
Streak
B
Hardness
C
Luster
D
Fracture
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
6
B
2
C
8
D
4
18) True or False: Magma is above Earth's surface.
A
True
B
False
*select an answer for all questions
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