Chapter 7 Review

All minerals share the following characteristics EXCEPT that of ____.

• being formed by natural processes
• being formed from living organisms
• being solids
• having the atoms within the mineral arranged in a pattern

Muscovite mica will peel off in flat sheets. This is an example of the physical characteristic called ____.

• hardness
• streak
• fracture
• cleavage

Calcite will scratch gypsum. This is an example of the physical characteristics called ____.

• hardness
• streak
• fracture
• cleavage

Which of the following is not a part of the definition of a mineral?

• inorganic
• man-made
• solid
• definite chemical composition

How do atoms form minerals?

• When magma cools, crystals are formed.
• When water evaporates, particles of substances dissolved in the water form crystals.
• When wind and rain make contact with exposed rock, crystals are formed.
• Both a and b are correct.

Which is an example of a mineral being used in everyday life?

• Coal is used for heating.
• Mica is used in the manufacturing of cosmetics.
• Lumber is used to build shelters.
• all of the above

Materials that were once alive contain _______________ and are not minerals.

• organic matter
• inorganic matter
• solid matter
• chemical energy

One of the softest minerals is ____.

• topaz
• quartz
• talc
• amethyst

Igneous rocks form from ____ when it cools.

• magma
• lava
• neither a nor b
• both a and b

Foliated rocks are distinguished by ____.

• layers
• lack of layers
• large mineral grains
• air holes