Quiz 1: Part 3

Question 1

Metals

Answer 1

1. crystal structure; BCC, FCC, HCP
2. Bonding: Metallic
3. Properties: strong, hard, ductile, high thermal conductivity & electrical
4. opaque
5. reflective

Question 2

Ceramics

Answer 2

1. bonding: ionic and/or covalent
2. crystalline or non-crystalline
3. properties: high hardness & stiffness, high thermal resistance, chemically inert

Question 3

Polymers

Answer 3

1. repeated units to form large molecule held by covalent bonds, secondary bonds
2. structure: mixture or composition of amorphous and crystalline
3. types: thermoplastics, thermosetting plastics, elastomers

Question 4

Mechanical Properties

Answer 4

determines material behavior when subjected to mechanical stress

Question 5

Mechanical Stress

Answer 5

elastic modulus, ductility, hardness, stiffness, elasticity, strength

Question 6

Static Stress

Answer 6

1. tensile
2. compressive
3. shear `