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Understanding Crystals

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Questions and Answers

What defines a crystal at a microscopic level?

The weight of the crystal

The arrangement of molecules in a highly ordered lattice (correct)

The color of the atoms in the crystal

The size of the crystal

What is a unit cell in the context of crystals?

A contributing part that is repeated in the crystal (correct)

A measurement unit for crystal weight

A single atom in the crystal lattice

The largest molecule in the crystal

Why do crystals grow into different shapes?

Due to factors affecting the arrangement of atoms, molecules, or ions (correct)

Because of different colors of the crystals

As a result of unique crystal compositions

Based on the crystal's weight

What is the significance of the pattern of molecules in a crystal?

It determines the shape of the crystal formation Signup and view all the answers

What is a crystal primarily composed of?

Atoms, molecules, or ions arranged in an ordered lattice Signup and view all the answers

Which term refers to the individual repeating part within a crystal structure?

Unit cell Signup and view all the answers

What causes the difference in components inside a unit cell for various types of crystals?

Type of crystal and how they are arranged Signup and view all the answers

What factor primarily determines the crystal habit of a mineral?

The environmental conditions surrounding the crystal as it forms and grows Signup and view all the answers

Which of the following minerals is known for its magnetic properties and was instrumental in ancient humans' discovery of magnetism?

Magnetite Signup and view all the answers

What is the defining characteristic of euhedral crystals?

They have flat surfaces (or facets) with sharp angles Signup and view all the answers

Which of the following minerals has a dodecahedral habit?

Garnet Signup and view all the answers

What type of crystal habit is characterized by elongated prism-like crystals with opposite faces parallel to each other?

Prismatic Signup and view all the answers

Which of the following minerals is an example of a mineral with a cubic habit?

Halite Signup and view all the answers

What type of crystal habit is characterized by having six points, eight facets, and twelve edges?

Octahedral Signup and view all the answers

Which of the following statements is true about non-geometrical crystals?

They do not have a regular geometric shape Signup and view all the answers