Science Chapter 3 Lesson 2

Front

What is a fracture in minerals?

Back

A fracture is the way a mineral breaks apart in an irregular way, not along a flat surface.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What does hardness mean in relation to minerals?

Back

Hardness is a mineral's ability to resist being scratched.

Front

What is luster in minerals?

Back

Luster is the way in which a mineral's surface reflects or absorbs light.

Front

What scale is used to measure the hardness of minerals?

Back

The Mohs scale is used to identify minerals by their hardness.

Front

Is color a reliable way to identify minerals?

Back

False. Color can vary and is not the best way to identify minerals.

Front

What is the definition of a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystalline structure.

Front

What is the difference between metallic and non-metallic luster?

Back

Metallic luster looks shiny like metal, while non-metallic luster can appear dull, glassy, or pearly.

Front

What is the significance of a mineral's streak?

Back

Streak is the color of a mineral in its powdered form, which can help identify the mineral.

Front

What does it mean if a mineral is opaque?

Back

If a mineral is opaque, it does not allow light to pass through.