Show:
Key Terms
True or False
Fill In The Blank
Random
More Key Terms
100
Hot liquid rock is called?
magma
100
Precious stones are the rarest and most valued gems.
true
100
when magma cools slowly beneath the earth's crust, the size of the crystals formed is __________.
large
100
Name one mineral.
talc, diamond, topaz, quartz, etc
100
What is a mineral?
A natural occuring substance formed in the earth.
200
The way a mineral breaks is called its?
cleavage
200
Hardness is a physical property.
True
200
_________ are rare minerals.
Gems
200
What would an ore of copper contain?
copper and other minerals
200
A repeating pattern of atoms forms a ?
crystal
300
The color of a mineral in a powder form is called?
streak
300
The ability of a substance to be hammered into thin sheets without breaking is ductility.
false, pulled into thin strands
300
The Mohs scale ranges from __________to _________.
1 to 10
300
Most common minerals are identified by_________.
physical properties
300
Gems such as diamonds are called?
Precious stones
400
The way a mineral reflects light is called its?
luster
400
There are 10 crystal systems, or basic shapes of crystals.
false, 6
400
Weighting two rocks of approximately equal size to see which is heavier would be a determination of their ________.
density
400
Which of the following does not describe a property of minerals? naturally occuring inorganic indefinite chemical composition crystal shape
indefinite chemical composition
400
What is Mohs hardness scale?
A commonly used scale that rates the hardness of minerals form 1-10.
500
What is ductility?
The ability of a substance to be pulled into thin strands.
500
Minerals are organic substances.
False, inorganic
500
___________ is the ability of a substance to be hammered into thin sheets without breaking.
Malleability
500
On the Mohs hardness scale, the sofest mineral is what?
talc
500
What is an ore?
Minerals from which metals and nonmental can be removed in usable amounts.