Rocks and Minerals Unit Review

Which of the following is not a characteristic of a mineral.

• Naturally occuring
• Organic
• Definite Chemical Composition
• Crystal Structure

A mineral the breaks along flat planes has

• Cleavage
• Facture

A mineral with fracture is

• Mica
• Quartz

Calcite has a hardness of 3, and topaz has a hardness of 8. Which of the following statements is true:

• Calcite would scratch topaz.
• Topaz would scratch calcite.

A mineral's resistance to being scratched is:

• Hardness
• Luster
• Streak
• Moh's Scale

The color of a mineral's powder is it's

• Hardness
• Luster
• Streak
• Tile line

The shine of a mineral is its:

• Hardness
• Luster
• Streak
• Metallicness

Which minerals always leave a dark streak

• Metallic minerals
• Nonmetallic minerals

Acid is applied to calcite, quartz, and hornblende. Which mineral will react?

• Calcite
• Quartz
• Hornblende
• None of them

Acid is applied to sulfur, quartz, and hornblende. Which mineral will react?

• Sulfur
• Quartz
• Hornblende
• None of them