Science- Chapter 3

What property describes the color of a mineral in powdered form?

• streak

• luster

• color

• cleavage

If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as an ore. This happens because___.

• The mineral has lost it usefulness

• The mineral can no longer be mined at a profit.

• This would never happen.

If quartz has a hardness of 7 and mica only has a hardness of 3 ____.

• Quartz can scratch mica

• Mica can scratch quartz

• Mica has more luster then quartz

• Quartz has no streak

If a mineral peels off in smooth sheets, this is an example of what characteristic?

• cleavage

• fracture

• streak

• hardness

Why should you test several properties when identifying a mineral?

• Testing several properties eliminates human error

• Two different minerals can share one or more properties

• It will increase the mineral's hardness.

Which is NOT a requirement for a material to be a mineral?

• crystalline form

• made in a laboratory

• definite chemical composition

• organic

If one mineral will scratch another, this is the characteristic of ____.

• streak

• fracture

• hardness

• luster

Rocks that have a desired substance that can be mined for a profit are called ____.

• ores

• gemstones

• fractures

Which mineral is the most common ingredient in nails and screws?

• iron

• gold

• copper

All minerals share the following characteristics EXCEPT ____

• being a solid

• being formed from a living organism

• being formed in nature