Podcast
Questions and Answers
What is a crystalline material?
What is a crystalline material?
- A material with no atomic arrangement
- A material with a periodic array of atoms over large distances (correct)
- A material with a periodic array of atoms over short distances
- A material with random atomic arrangement
How do pure and undeformed magnesium and beryllium behave compared to pure and undeformed gold and silver?
How do pure and undeformed magnesium and beryllium behave compared to pure and undeformed gold and silver?
- They have no difference in behavior due to their crystal structure
- They are harder due to their crystal structure
- They are more brittle due to their crystal structure (correct)
- They are more ductile due to their crystal structure
What significant property differences exist between crystalline and noncrystalline materials?
What significant property differences exist between crystalline and noncrystalline materials?
- Ductility and brittleness
- Conductivity and insulation
- Hardness and softness
- Transparency and opacity (correct)
Under what conditions do metals, ceramic materials, and certain polymers form crystalline structures?
Under what conditions do metals, ceramic materials, and certain polymers form crystalline structures?
What kind of bond exists in crystalline materials?
What kind of bond exists in crystalline materials?
What is the direct relationship between the properties of some materials and their crystal structures?
What is the direct relationship between the properties of some materials and their crystal structures?
What is the term used to describe materials that do not have long-range atomic order?
What is the term used to describe materials that do not have long-range atomic order?
In the context of crystal structures, what does the term 'lattice' refer to?
In the context of crystal structures, what does the term 'lattice' refer to?
What term is used to describe the small repeat entities into which crystal structures are often subdivided?
What term is used to describe the small repeat entities into which crystal structures are often subdivided?
What is the basic structural unit or building block of the crystal structure?
What is the basic structural unit or building block of the crystal structure?
Which type of materials are discussed briefly at the end of the chapter due to their noncrystalline or amorphous nature?
Which type of materials are discussed briefly at the end of the chapter due to their noncrystalline or amorphous nature?
What does the atomic hard-sphere model consider atoms (or ions) to be?
What does the atomic hard-sphere model consider atoms (or ions) to be?
In a crystal structure, what does the atomic order indicate about small groups of atoms?
In a crystal structure, what does the atomic order indicate about small groups of atoms?
What is chosen to represent the symmetry of a crystal structure?
What is chosen to represent the symmetry of a crystal structure?
What type of arrangement is used to represent nearest-neighbor atoms in the atomic hard-sphere model?
What type of arrangement is used to represent nearest-neighbor atoms in the atomic hard-sphere model?
What kind of entities are unit cells in the context of crystal structures?
What kind of entities are unit cells in the context of crystal structures?
Flashcards are hidden until you start studying
