The color of a mineral in powder form is called the mineral's 

• hardness
• specific gravity
• luster
• streak

How light reflects off of a mineral is called the mineral's 

• luster
• streak
• cleavage
• fracture

The following image shows what mineral property?

• Hardness
• Streak
• Cleavage
• Density

Diamond has a hardness of ___ on Mohs Hardness Scale.

• 1
• 5
• 8
• 10

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

Which of the following is NOT true of minerals?

• They are liquids
• They are formed in nature
• They are inorganic
• They have crystalline structure

The definition of a mineral does NOT include:

• crystalline structure
• solid
• organic
• natural

Which test is not reliable in identifying minerals

• streak
• luster
• specific gravity
• color

Breakage along smooth, flat planes

• fracture
• cleavage
• streak
• ore

Breakage along rough or jagged edges

• cleavage
• fracture
• streak
• luster