Systems of Matter & Energy-Lesson 2 Checkpoint

Which of the following statements describes the properties of a mineral?

• Atoms in a mineral are arranged in a specific and repeating pattern.

• Not all minerals occur only in nature; some minerals can be produced in laboratories.

• Minerals can occur in both a solid or liquid form.

• Because all minerals are elements or compounds, a chemical formula can be written for a mineral to describe its composition.

• If a compound forms only through biological processes, then it is not a mineral.

Light reflects evenly off the surface of a galena crystal, giving some surfaces a mirrorlike appearance.

• Luster

• Cleavage

• Shape

• Streak

• Transparency

Halite crystals break evenly along three planes oriented at 90 degrees to each other.

• Luster

• Cleavage

• Shape

• Streak

• Transparency

Native copper can have a treelike form.

• Luster

• Cleavage

• Shape

• Streak

• Transparency

Black hematite crystals form a red powder.

• Luster

• Cleavage

• Shape

• Streak

• Transparency

Light is absorbed by magnetite crystals and does not pass through it.

• Luster

• Cleavage

• Shape

• Streak

• Transparency

The face of a diamond crystal can be scratched only by another diamond.

• Luster

• Cleavage

• Shape

• Hardness

• Transparency