6 IS 2.1

What is the purpose of a scratch test in mineral identification?

• To measure the color of a mineral

• To determine the weight of a mineral

• To assess the hardness of a mineral

• To find the age of a mineral

Refer to Figure 6 on pages 36 and 37. Which mineral can be easily scratched by a steel knife?

• Diamond

• Fluorite

• Topaz

• Quartz

Which mineral can scratch window glass but not be scratched by a steel knife?

• Quartz

• Feldspar

• Corundum

• Diamond

What remains constant for a mineral regardless of its size?

• Volume

• Mass

• Density

• Weight

What happens to the density of a mineral if its mass increases but its volume remains the same?

• Density decreases

• Density increases

• Density remains the same

• Density becomes zero

What pattern do the atoms in a mineral form?

• Random

• Circular

• Regular

• Irregular

What is the repeating pattern of a mineral's atoms called?

• Atomic weight

• Crystal structure

• Mineral density

• Chemical formula

What do scientists measure to classify crystals?

• Temperature

• Angles and number of faces

• Weight and density

• Color and texture

What is a characteristic property used to identify minerals based on how the split along flat surfaces?

• Color

• Cleavage

• Size

• Weight

Name three special properties that some minerals possess.

• conduct electricity

• glow under UV light

• magnetic