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chapter3mineral test

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

As magma cools, its ____ combine into compounds that form a crystal structure, and it becomes a mineral.
a.
atoms
c.
electrons
b.
elements
d.
none of the above
 

 2. 

Minerals are comprised of one or more ____.
a.
colors
c.
rocks
b.
elements
d.
structures
 

 3. 

A collector of minerals would want a sample of ____.
a.
salt
c.
sugar
b.
coal
d.
wood
 

 4. 

The largest group of rock-forming minerals consists of the ____.
a.
quartzes
c.
silicates
b.
halides
d.
oxides
 

 5. 

Muscovite mica will peel off in flat sheets. This is an example of the physical characteristic called ____.
a.
hardness
c.
fracture
b.
streak
d.
cleavage
 

 6. 

Calcite will scratch gypsum. This is an example of the physical characteristics called ____.
a.
hardness
c.
fracture
b.
streak
d.
cleavage
 

 7. 

The properties of being ____ make a diamond a gemstone.
a.
rare and beautiful
c.
easy to obtain and beautiful
b.
useful and profitable
d.
rare and profitable
 

 8. 

As magma cools, its atoms arrange themselves to form a _____________ structure.
a.
chemical
c.
crystalline
b.
loose
d.
none of the above
 

 9. 

All minerals are
a.
liquids
c.
rocks
b.
inorganic
d.
organic
 

 10. 



mc010-1.jpg

According to the chart, oxygen and silicon make up ______ percent of the Earth’s crust.
a.
46.6 %
c.
over 74 %
b.
27.7 %
d.
over 100 %
 

 11. 

mc011-1.jpg

Although 90 elements occur naturally in the Earth’s crust, this figure shows that 98 percent of the crust is made up of how many elements?
a.
6
c.
9
b.
8
d.
2
 

 12. 

A Mineral is an inorganic _____ with a unique crystal structure.
a.
atomic
c.
magma
b.
solid
d.
crystal
 

 13. 

Some minerals are formed when ____ cools.
a.
an atom
c.
magma
b.
a solid
d.
the crystals
 

 14. 

When liquid evaporates, atoms of any dissolved minerals stay behind and form ____, such as desert roses.
a.
atoms
c.
crystals
b.
magma
d.
organic matter
 

 15. 

Friedrich Mohs created a scale that is used to measure the ____________ of minerals.
a.
color
c.
luster
b.
hardness
d.
cleavage
 

 16. 

mc016-1.jpg
The hardness of quartz is 7. This indicates that quartz will scratch all of the following minerals EXCEPT ____.
a.
talc
c.
topaz
b.
apatite
d.
calcite
 

 17. 

mc017-1.jpg
One of the softest minerals is ____.
a.
topaz
c.
talc
b.
quartz
d.
amethyst
 

 18. 

The two most common elements in the Earth's crust are
a.
nitrogen and oxygen.
c.
silicon and oxygen.
b.
carbon and silicon.
d.
oxygen and carbon.
 

 19. 

When quartz breaks it forms a curved, irregular pattern called
a.
luster.
c.
fracture.
b.
cleavage.
d.
hardness.
 

 20. 

____ is the most common silicate mineral group in the Earth's crust.
a.
Calcite
c.
Mica
b.
Feldspar
d.
Quartz
 

 21. 

A mineral's streak
a.
is more accurate than color in identifying a mineral.
b.
will tell you the mineral's specific gravity.
c.
is the same as a luster test.
d.
shows the mineral's crystal structure.
 

 22. 

Which statement best describes minerals?
a.
Rocks make minerals.
c.
Minerals can be solid, liquid or gas.
b.
Minerals make rocks.
d.
Crystals made by people are minerals.
 

 23. 

The color of the powder that a mineral leaves on a piece of white, unglazed porcelain is called the mineral's
a.
hardness.
c.
streak.
b.
luster.
d.
scratch.
 

 24. 

Which of the following physical properties can be expressed in numbers?
a.
luster
c.
color
b.
hardness
d.
reaction to acid
 

 25. 

Metallic and nonmetallic are descriptions of a mineral's
a.
streak.
c.
color.
b.
luster.
d.
cleavage.
 



 
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