3 AE 316 Spring 2025 Topics: Imperfections and Diffusion 1. (6 pts) Is it possible to produce a perfect crystalline solid that does not contain any imperfections a. True b. False 2. (6 pts) An impurity atom that replaces a host atom at its lattice site is a. A vacancy b. A dislocation c. A substitutional atom d. An interstitial atom 3. (8 pts) Explain the difference between interstitial and self-interstitial point defects. 4. (6 pts) The Burger's vector represents a. Degree of mixing between screw and edge dislocation b. Magnitude and direction of a lattice distortion caused by a dislocation c. Type of dislocation d. Boundary separating two grains 5. (6 pts) Fick's law of diffusion states that a. The concentration gradient profile is linear b. The diffusion flux is proportional to the concentration gradient c. The mass of atoms diffusing is proportional to thickness of grad