8th Grade Chapter 3 Assessment

The grouping silicate and nonsilicate minerals are based on

• organic content
• gas and liquid state
• chemical composition
• color

A silicate mineral must contain

• silicon and oxygen
• oxygen and carbon
• carbon and hydrogen
• silicon and carbon

Nonsilicate minerals

• don't not contain oxygen
• include native elements
• all have a nonmetallic luster
• are all rare substances

In addition to reclamation, a good way to reduce the environmental effects of mining is to

• recycle mineral products
• dig deeper mines
• use more metals
• flush mines with water

The color of the powder that a mineral leaves on a piece of white, unglazed porcelain is called the mineral's

• color
• luster
• streak
• scratch

Which of the following is NOT true of mineral

• They are liquids
• They are formed in nature
• They are inorganic
• They have a crystalline structure

What is a mineral deposit that is large and pure enough to be mined for profit called?

• gemstones
• ore
• pluton
• pegmatite

What kinds of mines are open pit and quarry mines

• shaft mines
• slope mines
• surface mines
• subsurface mines

What is the name of the nonmetallic minerals that are valued for their beauty and rarity rather than their usefulness?

• plutons
• gemstones
• ores
• pegmatites

naturally formed, inorganic solid with a definite crystalline structure

• minerals
• density
• ore
• chemical bond