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Earth Science
Minerals and Crystals
30
Science
11th Grade
01/28/2013

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Cards

Term
What are the two main groups of minerals?
Definition
silicate and nonsilicate
Term
What are nonsilicate crystalline structures?
Definition
Cubes, hexagonal prisms, irregular masses
Term
What is a double chain silicate?
Definition
Two bonded single-chained
Term
What two elements must be present in a silicate?
Definition
silicon and oxygen
Term
Which of the following groupings lists only minerals?
Definition
fluorite, feldspar, copper
Term
Which of the following are chatoyancy and asterism associated with?
Definition
cat's eye and star
Term
A mineral is described as fluorescent when it
Definition
glows under ultraviolet light
Term
what mineral property involves iron?
Definition
density
Term
because many minerals are similar in color and certain elements may change the color, color is
Definition
is not a good identifier
Term
Unstable atomic nuclei decay over time into stable nuclei, causing a mineral to be
Definition
radioactive
Term
What is chatoyancy?
Definition
mineral shows a cat's-eye effect
Term
A phosphorescent mineral glows
Definition
after an ultraviolet light is turned off
Term
Isolated tetrahedra
Definition
do not link with silicon or oxygen atoms
Term
What is asterism?
Definition
a six-sided star shape appears when a mineral reflects light
Term
Double-chain silicates are formed when
Definition
two single-chains of tetrahedra bond to each other
Term
Cubes, hexagonal prisms, and irregular masses are examples of
Definition
three common nonsilicate crystalline structures
Term
When each tetrahedon shares three of its oxygen atoms with other tetrahedon
Definition
sheet silicates are formed
Term
Which of the following is not one of the four criteria for determining whether or not a substance is a mineral?
Definition
it has a shiny surface
Term
What is radioactivity?
Definition
unstable atomic nuclei decay over time, releasing particles and energy
Term
The color of a mineral in powdered form is called the minerals
Definition
streak
Term
A mineral is a natural solid that usually is
Definition
inorganic, with characteristic physical properties
Term
Single-chain silicates are crystalline structures in which tetrahedra form a
Definition
ring by sharing oxygen atoms
Term
The hardest mineral on the Mohs hardness scale is
Definition
diamond
Term
Fluorescence is the property of a mineral that causes it to
Definition
glow under ultraviolet light
Term
Density is the ratio of
Definition
the mass of a substance to the volume of the substance
Term
what is true of isolated tetrahedra?
Definition
they do not link with other silicon or oxygen atoms
Term
Double-chain silicates form when
Definition
two single-chains of tetrahedra bond to each other
Term
Which of these are common nonsilicate crystalline structures?
Definition
cubes, hexagonal prisms, octahederal prisms, irregular masses
Term
Light that is reflected from a mineral's surface is called
Definition
luster
Term
Cleavage is the tendency of a mineral to
Definition
split along specific planes, forming flat surfaces
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