Understanding Crystals
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Questions and Answers

What is a crystal at a microscopic level?

  • A collection of molecules in the same arrangement throughout the material (correct)
  • A highly disordered lattice
  • A random collection of molecules
  • A mixture of atoms, molecules, and ions

    • What is the name of the contributing part that is repeated to form a crystal?

  • Atomic ensemble
  • Lattice unit
  • Molecule cluster
  • Unit cell (correct)

    • What determines the different shapes in which crystals grow?

  • The size of the unit cell
  • The color of the atoms
  • The type of material they are made of
  • The arrangement of atoms, molecules, or ions inside the unit cell (correct)

    • What is the primary reason for the different crystal formation shapes?

    <p>The pattern of the molecules</p> Signup and view all the answers

    What are the components inside a unit cell dependent on?

    <p>The type of crystal</p> Signup and view all the answers

    What color are Sodium (Na) atoms represented as in a 3D crystal arrangement?

    <p>Blue</p> Signup and view all the answers

    What color are Chloride (Cl) atoms represented as in a 3D crystal arrangement?

    <p>Green</p> Signup and view all the answers

    What factors affect the crystalline pattern and shape of a crystal?

    <p>The richness of the dissolved minerals, melted rock, and vapor</p> Signup and view all the answers

    Why do atoms joining in the crystal structure generally follow the shape of the crystal that has already formed?

    <p>To maintain a consistent pattern and shape</p> Signup and view all the answers

    How is mineral crystal habit defined?

    <p>By the microscopic appearance of crystals</p> Signup and view all the answers

    Which type of crystals have apparent and well-formed faces with sharp angles?

    <p>Euhedral crystals</p> Signup and view all the answers

    What mineral exhibits an octahedral habit?

    <p>Diamonds</p> Signup and view all the answers

    Which mineral does NOT have a cubic habit?

    <p>Quartz</p> Signup and view all the answers

    What is a characteristic feature of prismatic crystal habits?

    <p>Elongated prism-like crystals with opposite faces parallel to each other</p> Signup and view all the answers

    Why are non-geometrical crystals rare in their development of regular geometric forms at the surface?

    <p>Because they do not have a regular geometric shape</p> Signup and view all the answers

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