mineral

The tendency of some minerals to break along smooth, flat surfaces

• Streak
• Luster
• Fracture
• cleavage

The tendency of some minerals to break unevenly along curved or irregular surfaces

• Fracture
• Cleavage
• Luster
• Streak

A mineral's resistance to being scratched

• Fracture
• Luster
• Cleavage
• Hardness

The way a surface reflects light

• Luster
• Cleavage
• Compound
• Streak

A scale that measures hardness of minerals

• pH Scale
• Mohs Scale
• Temperature Scale
• Celsius Scale

The color of a mineral in powdered form

• Streak
• Luster
• Silicates
• Fracture

A naturally occurring, inorganic solid which has a definite crystalline structure

• Mineral
• Element
• Compound
• Rock

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

• luster
• streak
• cleavage
• fracture

Why is coal not a mineral?

• It's not a solid
• It is man-made
• It is not inorganic
• It is made of carbon

The following image shows what mineral property?

• Hardness
• Streak
• Cleavage
• Density