Rocks and Minerals

To compare how hard a mineral is to others, we use the:

• Acid Test

• Luster Test

• Mohs Hardness Scale

• Streak Test

What causes some minerals to have a metallic luster?

• It contains metal.

• It has been polished.

• They conuct electricity.

• They have big crystals.

Some minerals come in different colors, but their _________ color is always the same!

• fracture

• hardness

• luster

• streak

___________ is when minerals break in clean lines.

• Cleavage

• Fracture

__________ is when a mineral breaks in an irregular, messy way.

• Cleavage

• Fracture

Which one of these is a special property of some minerals?

• Makes noise

• Reacts to acid

• Unbreakable

• Walks away

Which one is NOT a mineral identification test?

• Floatation

• Fracture/Cleavage

• Hardness

• Streak

The ability of a mineral to scratch or be scratched by another mineral.

• Cleavage

• Formula

• Fracture

• Hardness

The way the surface of a mineral reflects light.

• Cleavage

• Luster

• Mohs Hardness Scale

• Streak

The color of a mineral's powder when it is rubbed against a porcelain plate.

• Cleavage

• Fracture

• Inorganic

• Streak