Introduction to Crystals Notes

Match

Match the following crystal systems their name.

Cubic

Tetragonal

Othorhombic

Hexagonal

Triclinic

• Cubic

• Tetragonal

• Othorhombic

• Hexagonal

• Triclinic

Multiple Choice

Which of the following statements best describes a crystal?

• A solid in which atoms are arranged in orderly, repeating patterns.

• A liquid with randomly arranged atoms.

• A gas with atoms moving freely.

• A solid with atoms arranged randomly.

Multiple Choice

Which factor determines the size of crystals formed from magma?

• The color of magma

• The rate at which magma cools

• The location of magma

• The amount of magma

Multiple Select

Select all statements that are true about crystal formation from magma.

• Crystals form when magma cools.

• The elements present in magma determine which minerals form.

• The slower magma cools, the smaller the crystals.

• The quicker magma cools, the larger the crystals.

Open Ended

Explain why granite samples can look different from each other even though they are the same type of rock.

Open Ended

Describe the process by which crystals are formed from a solution such as sea water.

Multiple Choice

What is the geometric shape shown in the diagram, and what type of crystal does it represent?

• Hexagonal crystal

• Cubic crystal

• Tetragonal crystal

• Orthorhombic crystal

Multiple Choice

Which of the following is a characteristic of cubic crystals?

• All angles are 90 degrees and all sides are equal length

• All angles are 60 degrees and all sides are equal length

• All angles are 120 degrees and all sides are different lengths

• All angles are 90 degrees and all sides are different lengths

Multiple Choice

Sturmanite crystals have how many sides?

• 6

• 4

• 8

• 3

Multiple Choice

Which of the following minerals is an example of a hexagonal crystal?

• Quartz

• Galena

• Halite

• Diamond

Multiple Choice

Which crystal system is characterized by one side being longer than the others, similar to a rectangle, and has Zircon as a good example?

• Tetragonal

• Orthorhombic

• Monoclinic

• Triclinic

Multiple Choice

Which of the following minerals is an example of a monoclinic crystal?

• Barite

• Orthoclase

• Rhodonite

• Zircon

Open Ended

Explain how the monoclinic crystal system differs from the orthorhombic system in terms of angles and shape.

Multiple Select

Select all statements that are true about the triclinic crystal system.

• It has no 90° angles.

• It is the most symmetrical crystal system.

• Rhodonite is an example of a triclinic crystal.

• It has all sides of equal length.

Multiple Choice

Based on the images of rhodonite, what is a common characteristic of its appearance?

• It is always in the form of inky black crystals.

• It has a pink to red color with black patches or veins.

• It is always transparent and colorless.

• It is blue with white streaks.

Open Ended

Explain how the rate of crystal formation affects the size of crystals in minerals. Use information from the overview slide to support your answer.

Open Ended

Summarize how the arrangement of atoms in crystals affects their appearance and structure. Why might some crystals have visible structures while others do not?