Chapter 9 Test Review

Which common metal was worth more per ounce than gold before scientists found a practical means of extracting from the ore?

Which of the following is not a mineral?

• asbestos

• feldspar

• platinum

• liquid water

Which of the following is a mixture?

• copper

• diamond

• sand (silicone dioxide)

• seawater

Sulfur is to native mineral as quartz is to _______ .

• mixture

• compound mineral

• native mineral

Which one of the following minerals has perfect cleavage?

• magnetite

• mica

• pyrite

• quartz

Obsidian, a mineral of volcanic origin, breaks in smooth, curved surfaces. What property does it show?

• luster

• fracture

• acidity

• combustion

A mineral rated as 1 on the Mohs scale is _______.

• soft
• hard

When you conduct an acid test on a mineral sample, you are watching for

• colored flame

• gas bubbles

• streak color

• luster

A dark mineral sample attracts iron filings. You could conclude that the mineral is

• obsidian

• basalt

• magnetite

• pitchblende

A mineral sample gives a strong reading on a Geiger counter. You could conclude that the mineral is _______.

• magnetite

• pitchblend (a uranium ore)

• obsidian

• aluminium