Crystal Defects Quiz
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Questions and Answers

What is the term for the displacement of a row of atoms from their normal position in the lattice?

  • Polymorphism
  • Isomerism
  • Dislocation (correct)
  • Allotropy
  • Which term refers to the ability of a solid material to exist in more than one physical form while maintaining the same chemical structure?

  • Allotropy (correct)
  • Grain boundaries
  • Isomerism
  • Planar defects
  • Which of the following involves hydrocarbons with the same composition having different atomic arrangements?

  • Polymorphism
  • Dislocation
  • Isomerism (correct)
  • Grain boundaries
  • At what temperature do displacive transitions from α to β forms take place?

    <p>573°C</p> Signup and view all the answers

    Which type of transition involves only atomic displacement without bond breakage?

    <p>Displacive transition</p> Signup and view all the answers

    In which material can you find different allotropic forms with the same chemical composition?

    <p>$\alpha$-quartz</p> Signup and view all the answers

    What type of solids have irregular arrangement of atoms?

    <p>Amorphous solids</p> Signup and view all the answers

    Which type of solids have a short range atomic order and characteristics of both crystalline and amorphous solids?

    <p>Meso-morphous solids</p> Signup and view all the answers

    In which type of cubic system does each corner have 1/8 of an atom with one atom at the center of the cube?

    <p>Body centered cubic (B.C.C)</p> Signup and view all the answers

    How many types of cubic systems are there?

    <p>3</p> Signup and view all the answers

    What is the defining characteristic of Meso-morphous solids?

    <p>Short range atomic order</p> Signup and view all the answers

    What is the atomic packing relating to the number and position of nearest neighbor atoms in a unit cell known as?

    <p>Atomic coordination</p> Signup and view all the answers

    What is the defining characteristic of a solid state of matter?

    <p>Closely packed atoms held by strong forces</p> Signup and view all the answers

    Which term is used to describe a crystal structure's regular arrangement of atoms in space?

    <p>Space lattice</p> Signup and view all the answers

    What type of solids are characterized by atoms situated in a repeating array forming a space lattice?

    <p>Crystalline solids</p> Signup and view all the answers

    What is the smallest repeating unit in a space lattice called?

    <p>Unit cell</p> Signup and view all the answers

    What is the arrangement of atoms in the cubic system with respect to one another?

    <p>Repetitive 3D pattern</p> Signup and view all the answers

    What type of transition is described when silica changes from one crystalline form to another?

    <p>Reconstructive transition</p> Signup and view all the answers

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