Flash Cards Unit 2 Reading Quiz
(24 cards)
What does the shape of a crystal come from?
Their internal arrangement of atoms.
A crystal is a what?
A solid where the atoms or other components appear in a repeating pattern.
What is an element?
Something that cannot be broken into any simpler substances
What are the two most common elements in Earths Crust?
Silicon & Oxygen
A mineral is a what?
Is a substance that has specific characteristics.
Criteria for a Mineral:
1) solid
2) occurs naturally
3) inorganic
4) specific chemical composition
5) Definite crystalline structure
How many Native Elements are there?
19
How many naturally occurring elements are there?
92
What is a Native Element?
A native element is a crystal that is formed of only 1 element.
What is a compound?
A substance of two or more elements
How many different kinds of compounds are there?
over 5000
What are some common minerals?
quartz, Halite, calcite, and pyrite.
The most abundant minerals in the crust are compounds, rich in which elements?
Silicon. Oxygen, and Silicates
Luster-
How the mineral reflects light
Transparency:
Amount of light that passes through
Shape:
How the atoms are organized, & and the environment in which the mineral was found.
color:
Given from different chemicals in the crystal
streak:
Can help define the mineral
Cleavage:
The tendency of a crystal to split across a flat plane
Fracture:
Name for whenever crystals break
Hardness:
Strength of the crystal
Saturation:
Full to capacity
Precipitate:
Something that comes out of a saturated solution
Crystallize
Harden
