Science

Rocks

• mixture of minerals
• volcanic glass
• organic mater
• other minerals 

Crystals

• Naturally occurring
• inorganic
• .Crystaline solid
• Element or compound

How to identify a mineral

•  luster
• hardness
• specific gravity
• .streak
• The way it  breaks

matter is

Atoms

compound

4 things of a mixture

• Heterogenous
• Homogenous
• parts in a mixtures can be separated by physical meansnother list item here
• parts of a compound must be separated by chemical means