ENGN45_Quiz1-A
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School
City College of San Francisco *
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Course
45
Subject
Material Science
Date
Dec 6, 2023
Type
Pages
8
Uploaded by DBStanley
Quiz #1
Due
No due date
Points
10
Questions
10
Time Limit
None
Allowed Attempts
Unlimited
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
46 minutes
9.33 out of 10
Submitted Jan 20 at 1:47pm
This quiz covers the Introduction to Materials and Atomic Bonding.
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1 / 1 pts
Question 1
Pick the answer which, if put on the end of this sentence, makes it true:
The relationship between bonding force and bonding energy for the
different types of atomic bonding…
is the same for all the types of bonding, both primary and secondary.
Correct!
Correct!
Yes. The bond force curve and the bond energy curve have the
same general shape for all types of atomic bonding.
is different for the three types of primary bonding but is the same for all
the types of secondary bonding.
depends on the types of materials that are being bonded.
looks like: E = dF/da
is the same for the three types of primary bonding but different for the
secondary bonding forces.
1 / 1 pts
Question 2
What is Quantum Mechanics?
It is a theory that predicts probabilities in situations where classical
mechanics predicts certainties.
Correct!
Correct!
It is a set of principles and laws that govern all physical systems;
however, it is most relevant for systems of atomic and subatomic
entities.
Correct!
Correct!
Correct!
Correct!
It is a theory describing physical systems that came about because
classical mechanics failed to explain certain phenomenon.
It is a theory that addresses the fact that matter has wave-like properties
in addition to particle-like properties and the fact that waves have
particle-like properties in addition to their wave-like properties.
Correct!
Correct!
All of the answers are correct.
1 / 1 pts
Question 3
What is the relationship between the bonding force and the bonding
energy of an atomic bond?
The force is equal to the derivative of the energy with respect to the
separation distance.
Correct!
Correct!
Yes, this is right. The mathematical relationship looks like:
F = dE/da
The force is always greater than the energy.
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The energy is equal to the derivative of the force with respect to the
separation distance.
The energy is always greater than the force.
This relationship is the same for all three types of primary atomic
bonds and also for secondary atomic bonds.
1 / 1 pts
Question 4
Pick the best answer that is true for metallic bonding.
Metallic bonding takes place between elements whose
electronegativities are far apart.
Metallic bonding maximizes packing efficiency.
Metallic bonding is non-directional.
Metallic bonding is non-directional and therefore maximizes packing
efficiency.
Correct!
Correct!
Exactly!
1 / 1 pts
Question 5
Pick the best answer that is true for secondary bonding.
Secondary bonding takes place between atoms or molecules that have
fluctuating dipole moments.
Secondary bonding takes place between atoms or molecules that have
permanent dipole moments.
Secondary bonding takes place between atoms or molecules that have
any type of dipole moments.
Correct!
Correct!
This is the correct answer.
Secondary bonding takes place between atoms or molecules that have
temporary dipole moments.
1 / 1 pts
Question 6
To what does the science of materials refer?
A material's properties.
The basic structure of a material.
The processing of a material.
The structure and properties of a material.
Correct!
Correct!
Exactly!
The applications that a material is used for.
The science of materials refers to a material's basic structure
and its properties. The properties of a material will be a direct
consequence of its structure.
1 / 1 pts
Question 7
Atomic scale structure is on the order of:
meters
0.1 nano-meters
Correct!
Correct!
Yes, this is atomic scale: on the order of 10
meters.
-10
nano-meters
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micro-meters
milli-meters
1 / 1 pts
Question 8
What is an important criteria when selecting a material for a specific
application? (Select all that apply.)
The impact the selected material will have on the environmental,
including all aspects of its life, from extraction and processing to
utilization and disposal.
Correct!
Correct!
The potential the selected material has to deteriorate in the environment
in which it will be used.
Correct!
Correct!
The cost of the material including its extraction, processing and
disposal.
Correct!
Correct!
The properties of the selected material must meet design specifications
of strength, durability, etc.
Correct!
Correct!
All of these criteria are important. The ranking will be determined
by the specific application.
0.33 / 1 pts
Question 9
What is a material property? (Select all that apply.)
A standard definition created by a professional organization to quantify
material behavior.
orrect Answer
orrect Answer
A measurement that indicates how the material will respond to a
stimulus.
orrect Answer
orrect Answer
An inherent characteristic of a material.
Correct!
Correct!
1 / 1 pts
Question 10
Alumina with high porosity will be ...
opaque.
Correct!
Correct!
green.
black.
transparent.
reddish-brown.