Materials Science: Structure and Properties
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Questions and Answers

What is one aspect of materials science?

  • Investigation of material properties
  • Investigation of material applications
  • Investigation of material processing
  • Investigation of relationships between structures and properties of materials (correct)

    • Which level of structure involves electrons within individual atoms and interactions with their nuclei?

  • Subatomic (correct)
  • Macroscopic
  • Microscopic
  • Atomic

    • What is one way to describe the structure of a material?

  • Arrangement of internal components (correct)
  • Arrangement of external and internal components
  • Properties of the material
  • Arrangement of external components

    • What is one dimension of structural features in materials?

    <p>All of the above</p> Signup and view all the answers

    What do material properties depend on?

    <p>Material structure</p> Signup and view all the answers

    What is an example of a material property that depends on structure?

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

    What is a common consequence of prioritizing strength in a material?

    <p>A limited ductility</p> Signup and view all the answers

    What is a major factor to consider when selecting a material, aside from its properties?

    <p>The cost of the finished product</p> Signup and view all the answers

    What is a common consequence of exposing a material to elevated temperatures or corrosive environments?

    <p>A decrease in mechanical strength</p> Signup and view all the answers

    What is the primary purpose of classifying materials by their properties?

    <p>To determine their applicability</p> Signup and view all the answers

    What is a characteristic of mechanical properties?

    <p>They relate to deformation under an applied load or force</p> Signup and view all the answers

    What is a key consideration in selecting a material, given its ideal set of properties?

    <p>The material's cost</p> Signup and view all the answers

    What is the recording medium magnetized by in Magnetic Storage?

    <p>Recording head</p> Signup and view all the answers

    What is the effect of adding 3 atomic % Si to Fe in Magnetic Permeability?

    <p>It makes Fe a better recording medium</p> Signup and view all the answers

    What determines the transparency of Aluminum oxide?

    <p>Material structure</p> Signup and view all the answers

    What causes cracks in materials?

    <p>Stress and saltwater</p> Signup and view all the answers

    What can slow down crack speed in salt water?

    <p>Heat treatment</p> Signup and view all the answers

    What is the title of the book where Figure 17.0 was adapted from?

    <p>Marine Corrosion, Causes, and Prevention</p> Signup and view all the answers

    What is the primary material used in the new Boeing 787 fuselage?

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

    What is the primary function of biomaterials?

    <p>To replace diseased or damaged body parts</p> Signup and view all the answers

    What is the defining characteristic of semiconductors?

    <p>They have intermediate electrical properties</p> Signup and view all the answers

    What is the result of the advent of integrated circuitry in the electronics and computer industries?

    <p>A total revolution in the industry over the past three decades</p> Signup and view all the answers

    What is the primary characteristic of smart materials?

    <p>They sense and respond to environmental changes</p> Signup and view all the answers

    What is a common feature of nanomaterials?

    <p>They have a nanoscale structure</p> Signup and view all the answers

    What is the atomic packing factor for a simple cubic crystal structure?

    <p>0.52</p> Signup and view all the answers

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

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

    Which element is the only one that exhibits a simple cubic (SC) crystal structure?

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

    What is the shape of the unit cell in a hexagonal close-packed (HCP) crystal structure?

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

    Why do none of the metallic elements have a simple cubic (SC) crystal structure?

    <p>Because of its low atomic packing factor</p> Signup and view all the answers

    What is the expression that needs to be derived for a simple cubic (SC) cell?

    <p>The volume of the unit cell in terms of the atomic radius R</p> Signup and view all the answers

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