Podcast
Questions and Answers
Toughness may be defined as the ability of material to absorb _______ before fracture.
Toughness may be defined as the ability of material to absorb _______ before fracture.
energy
Zinc, lead, and tin are examples of materials that have:
Zinc, lead, and tin are examples of materials that have:
- high melting point
- low melting point (correct)
- very high melting point
- none of the above
_______ is the property of metal due to which a metal becomes fluid when it is heated.
_______ is the property of metal due to which a metal becomes fluid when it is heated.
Fusibility
Which one of the following materials has the highest hardness?
Which one of the following materials has the highest hardness?
A crystalline solid which consists of an aggregate of many crystals separated by well-defined boundaries is said to be _______.
A crystalline solid which consists of an aggregate of many crystals separated by well-defined boundaries is said to be _______.
The structure shown in Fig. Q. 42 is known as:
The structure shown in Fig. Q. 42 is known as:
The unit cell consists of _______ that represents atoms or ions.
The unit cell consists of _______ that represents atoms or ions.
The number of other particles that each particle in a crystalline solid contacts is known as its _______.
The number of other particles that each particle in a crystalline solid contacts is known as its _______.
Which of the following structures have the highest packing factor?
Which of the following structures have the highest packing factor?
The crystal lattice has _______ arrangement.
The crystal lattice has _______ arrangement.
Iron changes its BCC to FCC structure at _______.
Iron changes its BCC to FCC structure at _______.
In diamond cubic structure, the number of atoms per unit cell is:
In diamond cubic structure, the number of atoms per unit cell is:
The material property which only depends on basic crystal structure is _______.
The material property which only depends on basic crystal structure is _______.
Flashcards
Toughness
Toughness
Ability to absorb energy before fracturing.
Low Melting Point Metals
Low Melting Point Metals
Materials with relatively low melting point.
Fusibility
Fusibility
Property of a metal becoming liquid when heated.
Diamond
Diamond
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Polycrystalline
Polycrystalline
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BCC Structure
BCC Structure
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FCC Structure
FCC Structure
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HCP Structure
HCP Structure
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Lattice Points
Lattice Points
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Coordination Number
Coordination Number
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Highest Packing Factor
Highest Packing Factor
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Crystal Lattice Arrangement
Crystal Lattice Arrangement
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Iron BCC to FCC Transition
Iron BCC to FCC Transition
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Atoms per Diamond Cubic Unit Cell
Atoms per Diamond Cubic Unit Cell
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Crystal Structure Dependent Property
Crystal Structure Dependent Property
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Study Notes
- Toughness is the ability of a material to absorb energy before fracture.
- Zinc, lead, and tin are examples of materials that have a low melting point.
- Fusibility is the property of metal due to which a metal becomes fluid when heated.
- Diamond has the highest hardness.
- A crystalline solid consisting of aggregates of many crystals separated by well-defined boundaries is polycrystalline.
- The structure in Fig. Q. 42 is known as BCC (Body-Centered Cubic).
- The structure in Fig. Q. 43 is known as FCC (Face-Centered Cubic).
- The structure shown in Fig. Q. 44 is known as HCP (Hexagonal Close Packed).
- A unit cell consists of lattice points that represent atoms or ions.
- The number of other particles that each particle in a crystalline solid contacts is known as its coordination number.
- FCC and HCP structures have the highest packing factor.
- The crystal lattice has a 3-dimentional arrangement.
- Iron's BCC structure changes to FCC at 907°C.
- In a diamond cubic structure, the number of atoms per unit cell is 8.
- Fracture strength is a material property that only depends on the basic crystal structure.
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Description
Explanation of material properties like toughness, fusibility, and hardness. Includes discussion of crystalline structures such as BCC, FCC, and HCP, and the concept of unit cells and coordination number. Also covers phase transitions in iron.
