Grade 6 Science Study Guide
Test Date: Thursday, December 3rd
Mineral
Is a naturally occurring,
inorganic solid with a definite
chemical composition and an
orderly arrangement of atoms or
ions. It is made of only one
substance
Rock forming minerals
Quartz, feldspar, and olivine
Crystallization
A process that occurs when
particles dissolved in a liquid or a
melt solidify and form crystals
Silicate
6 basic groups of crystal shape
Crystal
Where are minerals found?
A member of the mineral group
that has silicon and oxygen in its
crystal structure
Isometric
Hexagonal
Tetragonal
Orthorhombic
Monoclinic
Triclinic
A mineral who internal
geometrical repeating pattern
of atoms is consistent throughout
the entire structure.
Everywhere! All around us
How many natural minerals are
on Earth?
Facts about minerals:
Definite composition
Chemical formula
Chemical formula for element
examples
4,000
- They have a definite
chemical composition
- They are identified by their
crystal patterns
- All minerals are solids
- They are inorganic
- They grow in clusters
The substance will always form in
the same way. Meaning the
same elements and the same
number of atoms
Is used to represent an element
or a compound
H, N, C
Chemical formula for compound
H20 C02
Crystals are found…
Everywhere! In sand, mountains,
caves, snowflakes
Why are crystals important?
They are important in everyday
tools: cutting tools, gemstones for
jewelry, watches, photography
and calculators
Organic
Naturally made; contains carbon
Inorganic
Man-made; does not contain
carbon or hydrogen
Chemical formula
Shorthand for a compound or
element
Subscript
Number of atoms per element in
a chemical formula
Smallest particle of matter; basic
unit all matter
Atom
Crystal
A mineral with a specific
crystalline pattern throughout its
structure
Rock
An organic substance, contains
two or more minerals