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Arnett - Science 8 Ch. 7 review
chapter review
27
Science
8th Grade
11/03/2011

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Term
A naturally formed, inorganic solid with a crystalline structure.
Definition
mineral
Term
A substance made of two or more elements that have been chemically joined, or bonded.
Definition
Element
Term
A crystal's ____ is determined by the kinds of atoms that make up the mineral.
Definition
shape
Term
Minerals are classified as either _____ or ______.
Definition
silicate, nonsilicate
Term
Pure substances that cannot be broken down into simpler substances by ordinary chemical means.
Definition
elements
Term
The smallest part of an element that still has all the properties of that element.
Definition
atom
Term
Solid, geometric forms of minerals produced by a repeating pattern of atoms.
Definition
crystals
Term
Name the 6 ways that mineral are identified.
Definition
color, luster, streak, cleavage & fracture, hardness, density
Term
The way a surface reflects light
Definition
Luster
Term
The color of a mineral in powdered form
Definition
Streak
Term
The tendency of some minerals to break unevenly along curved or irregular surfaces.
Definition
Fracture
Term
A mineral's resistance to being scratched
Definition
Hardness
Term
The tendency of some minerals to break along flat surfaces
Definition
Cleavage
Term
Scientists use the ____ hardness scale to determine hardness.
Definition
Mohs'
Term
When a mineral's color is changed by ____, it does not change it's streak.
Definition
weathering
Term
Impurities cause quartz to change _____.
Definition
colors
Term
MInerals come in many _____ and _____
Definition
colors, shades
Term
____ is the softest mineral.
Definition
Talc
Term
____ is the hardest mineral.
Definition
Diamond
Term
A measure of how much matter there is in a given amount of space.
Definition
Density
Term
Name 3 special properties of minerals.
Definition
Fluorescence, chemical reaction, optical properties, radioactivity, magnetism, taste
Term
Almost all known minerals can be found in the Earth's _____.
Definition
crust
Term
The _____ in which a mineral forms determines the mineral's properties.
Definition
environment
Term
A mineral deposit large enough and pure enough to be mined for profit.
Definition
Ore
Term
____ mining is the removal of minerals or other materials at or near the surface of the Earth.
Definition
Surface
Term
____ mining is the removal of minerals or other materials from deep within the Earth.
Definition
Deep
Term
The process of returning the land to its original state after mining is completed.
Definition
reclamation
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