MSE 280 Test 1 | Questions with 100% Verified Answers | Latest Update

MSE 280 Test 1 | Questions with 100% Verified Answers |
Latest Update
Question:
Which curve would be for the material with the highest modulus of elasticity?

Answer:
The lowest curve, which in the case of the picture is curve B


Question:
Which curve would be representative for the material with the higher melting point?

Answer:
The lowest curve, which in the case of the picture is curve B


Question:
Metallic Bond Type

Answer:
valence electrons are not bound to an atom in the solid but drift around and form a "sea of
electrons"


Question:
High melting point materials have weak interatomic (or interionic) bonds.

Answer:
False


Question:
The following lists the bonding energies of a few ceramic compounds. Rank them from low to high in
expected elastic modulus.

Answer:
The higher the energy, the higher the elastic modulus


Question:
Which is the weakest bond type?

Answer:
Van Der Waals


Question:
Bond Strength

Answer:
The higher the melting point, the stronger the bond strength will be.

, Question:
Melting Point

Answer:
The stronger the bond strength, the higher the melting point will be.


Question:
Stiffness

Answer:
The higher the melting point, the more stiff it will be.


Question:
Metallic bonding causes metals to be shiny!

Answer:
True


Question:
Does a thermoset or a thermoplastic have higher ductility?

Answer:
Thermoplastic


Question:
Primary Bonds

Answer:
Ionics, Covalent, and Metallic


Question:
Three Metallic Crystal Structures

Answer:
BCC ( Body-Centered Cubic), HCP (Hexagonal Close-Packed), FCC ( Face-Centered Cubic)


Question:
Closely packed structure(s)

Answer:
FCC and HCP are packed as tightly as possible


Question:
Not so tightly packed structure(s)