MTE1501 Assignment 4 Brainstorming Questions
Answered Correctly Graded A+
______ metals form thin, protective oxide films that are conforma to thee metal surface -
CORRECT ANSWER ✔✔ -Passive
_________ is a type of molding in which thermoplastics are heated above melting temperature
and, using an extruder, are forced into a closed die to produce a molding. - CORRECT
ANSWER ✔✔ -Injection molding
__________ is the destructive attack of a metal involving
the transfer (loss) of electrons from the metal to another chemical
species that gains (consumes) them. - CORRECT ANSWER ✔✔ -Corrosion
__________ is the fraction of the incident beam that is reflected. Materials with a higher index of
refraction have a ______ reflectivity than materials with a _____ index. - CORRECT ANSWER
✔✔ -Reflectivity, higher, lower
___________ materials are materials where magnetic moments are produced in neighboring
dipoles. These dipoles will line up in opposition to one another to produce zero magnetization. -
CORRECT ANSWER ✔✔ -Antiferromagnetic
____________ are composed of long chains of polymers that are tangled and can be easily
pulled apart by the application of tensile stress. These can easily be recycled. ____________ are
,composed of long chains of polymers that are strongly cross-linked to one another. These are
difficult to recycle. - CORRECT ANSWER ✔✔ -Thermoplastics, Thermosetting Polymers
______________ is a reaction that causes the growth of a polymer chain. In this reaction, a
relatively small molecule is formed as a result of the polymerization reaction and may involve
different monomers as starting or precursor molecules. - CORRECT ANSWER ✔✔ -
Condensation polymerization
(T/F Although ceramics can be crystalline or partially crystalline, they are never amorphous -
CORRECT ANSWER ✔✔ -False
(T/F) Although ceramics can be crystalline or partially crystalline, they are never amorphous -
CORRECT ANSWER ✔✔ -false
(T/F) Because metals have no energy gap, they require high-energy photons to excite their
electrons to higher energy levels. - CORRECT ANSWER ✔✔ -False
(T/F) Despite extensive recycling efforts, plastics remain one of the largest components of
landfills. - CORRECT ANSWER ✔✔ -True
(T/F) Materials that have predominantly ionic or covalent bonds have many free electrons. -
CORRECT ANSWER ✔✔ -False
(T/F)In most cases, increasing the average molecular weight or degree of polymerization of a
polymer will cause a decrease in various physical properties of that polymer. These decreasing
properties include impact toughness, wear resistance, and melting temperature. - CORRECT
ANSWER ✔✔ -False
, A critical temperature in the formation of glass is known as the glass-
____________
temperature. - CORRECT ANSWER ✔✔ -Transition
A material demonstrating ______________ weakly opposes a magnetic field while a
___________ material will experience strong magnetism in a magnetic field. - CORRECT
ANSWER ✔✔ -diamagnetic behavior, ferromanetic
A material with higher magnetic permeability will carry magnetic flux less readily than one with
lower magnetic permeability. - CORRECT ANSWER ✔✔ -False
A thermoplastic is characterized by: - CORRECT ANSWER ✔✔ -little cross linking
A(n)
__________
polymer is a polymer consisting of spaghetti-like molecular chains. A(n)
________
polymer consists of primary polymer chains in addition to secondary offshoots stemming from
these main chains. - CORRECT ANSWER ✔✔ -linear, branched
Ability to transmit a c lear image is ______ - CORRECT ANSWER ✔✔ -transparent
According to Table 13-1 a material with a designation number of 1060 has a manganese
percentage of __________. - CORRECT ANSWER ✔✔ -.60-.90
Anodes undergo a(n)
Answered Correctly Graded A+
______ metals form thin, protective oxide films that are conforma to thee metal surface -
CORRECT ANSWER ✔✔ -Passive
_________ is a type of molding in which thermoplastics are heated above melting temperature
and, using an extruder, are forced into a closed die to produce a molding. - CORRECT
ANSWER ✔✔ -Injection molding
__________ is the destructive attack of a metal involving
the transfer (loss) of electrons from the metal to another chemical
species that gains (consumes) them. - CORRECT ANSWER ✔✔ -Corrosion
__________ is the fraction of the incident beam that is reflected. Materials with a higher index of
refraction have a ______ reflectivity than materials with a _____ index. - CORRECT ANSWER
✔✔ -Reflectivity, higher, lower
___________ materials are materials where magnetic moments are produced in neighboring
dipoles. These dipoles will line up in opposition to one another to produce zero magnetization. -
CORRECT ANSWER ✔✔ -Antiferromagnetic
____________ are composed of long chains of polymers that are tangled and can be easily
pulled apart by the application of tensile stress. These can easily be recycled. ____________ are
,composed of long chains of polymers that are strongly cross-linked to one another. These are
difficult to recycle. - CORRECT ANSWER ✔✔ -Thermoplastics, Thermosetting Polymers
______________ is a reaction that causes the growth of a polymer chain. In this reaction, a
relatively small molecule is formed as a result of the polymerization reaction and may involve
different monomers as starting or precursor molecules. - CORRECT ANSWER ✔✔ -
Condensation polymerization
(T/F Although ceramics can be crystalline or partially crystalline, they are never amorphous -
CORRECT ANSWER ✔✔ -False
(T/F) Although ceramics can be crystalline or partially crystalline, they are never amorphous -
CORRECT ANSWER ✔✔ -false
(T/F) Because metals have no energy gap, they require high-energy photons to excite their
electrons to higher energy levels. - CORRECT ANSWER ✔✔ -False
(T/F) Despite extensive recycling efforts, plastics remain one of the largest components of
landfills. - CORRECT ANSWER ✔✔ -True
(T/F) Materials that have predominantly ionic or covalent bonds have many free electrons. -
CORRECT ANSWER ✔✔ -False
(T/F)In most cases, increasing the average molecular weight or degree of polymerization of a
polymer will cause a decrease in various physical properties of that polymer. These decreasing
properties include impact toughness, wear resistance, and melting temperature. - CORRECT
ANSWER ✔✔ -False
, A critical temperature in the formation of glass is known as the glass-
____________
temperature. - CORRECT ANSWER ✔✔ -Transition
A material demonstrating ______________ weakly opposes a magnetic field while a
___________ material will experience strong magnetism in a magnetic field. - CORRECT
ANSWER ✔✔ -diamagnetic behavior, ferromanetic
A material with higher magnetic permeability will carry magnetic flux less readily than one with
lower magnetic permeability. - CORRECT ANSWER ✔✔ -False
A thermoplastic is characterized by: - CORRECT ANSWER ✔✔ -little cross linking
A(n)
__________
polymer is a polymer consisting of spaghetti-like molecular chains. A(n)
________
polymer consists of primary polymer chains in addition to secondary offshoots stemming from
these main chains. - CORRECT ANSWER ✔✔ -linear, branched
Ability to transmit a c lear image is ______ - CORRECT ANSWER ✔✔ -transparent
According to Table 13-1 a material with a designation number of 1060 has a manganese
percentage of __________. - CORRECT ANSWER ✔✔ -.60-.90
Anodes undergo a(n)
