States of Matter Overview
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Questions and Answers

Which of the following statements about the coordination number is true?

  • It represents the number of atoms surrounding a single atom in a crystal lattice. (correct)
  • A higher coordination number indicates a less dense packing of atoms.
  • The coordination number is always the same for all crystal structures.
  • It is a measure of the distance between atoms in a crystal lattice.

    • In the simple cubic (SC) structure, what is the coordination number?

  • 12
  • 4
  • 8
  • 6 (correct)

    • Which of the following statements about the body-centered cubic (BCC) structure is correct?

  • Atoms touch each other along the cube diagonals. (correct)
  • It has the lowest packing density among the three cubic structures.
  • It has the highest packing density among the three cubic structures.
  • Atoms touch each other along the cube edges.

    • What is the packing density of the face-centered cubic (FCC) structure?

    <p>74%</p> Signup and view all the answers

    Which of the following statements about the unit cell is true?

    <p>It is the smallest repeating unit that defines the crystal structure.</p> Signup and view all the answers

    What is the coordination number for a hexagonal close-packed (HCP) structure?

    <p>12</p> Signup and view all the answers

    Which of the following statements about isotropic and anisotropic materials is correct?

    <p>Isotropic materials have properties that are the same in all directions, while anisotropic materials have properties that differ in different directions.</p> Signup and view all the answers

    According to the kinetic theory, how do substances dissolve in a solution?

    <p>The solvent molecules collide with the solute molecules, transferring energy to them and causing them to dissociate.</p> Signup and view all the answers

    Which of the following factors does NOT affect the solubility of solids?

    <p>Pressure of the solution</p> Signup and view all the answers

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