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Free Practice Quiz Question List

2 Atomic Structure and Material Microstructure Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Atomic Structure and Material Microstructure, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: In metallic bonding, valence electrons can move readily through the solid, helping many metals conduct electricity.

  1. A

    True

  2. B

    False

02
Choose one
1 point

Which statement best distinguishes a glass from a crystal?

  1. A

    A glass has a repeating three-dimensional arrangement, while a crystal does not.

  2. B

    A crystal has long-range repeating order, while a glass lacks it.

  3. C

    A glass is always made of a single grain, while a crystal is always polycrystalline.

03
Written response
1 point

What point defect is formed when an atom occupies a space in a crystal that is normally unoccupied?

04
Fill in the blank
1 point

An atom occupying a normally unoccupied space in a crystal is an example of an .

05
Choose one
1 point

Why are many ionic solids brittle when their atomic planes shift?

  1. A

    Plane shifts make all the ions neutral, so the solid melts easily.

  2. B

    Plane shifts can bring like charges together, contributing to brittleness.

  3. C

    Plane shifts create mobile electrons that make the solid ductile.

06
Choose all
1 point

Which effects can grain boundaries have in a material? Select all that apply.

  1. A

    They can impede dislocation motion.

  2. B

    They always eliminate diffusion through a material.

  3. C

    They can provide paths for diffusion.

  4. D

    They can be sites where impurities collect.

07
Written response
1 point

What is the term for deliberately adding impurities to tune a semiconductor's properties?

08
True or false
1 point

True or false: A pore in a material can act as a stress concentrator and help a crack begin.

  1. A

    True

  2. B

    False

09
Fill in the blank
1 point

In a polycrystalline material, a region with a consistent crystal orientation is called a .

10
Choose one
1 point

Which structural factors can help explain why a polymer deforms differently in different directions?

  1. A

    Only the chemical elements in the polymer determine its deformation.

  2. B

    A polymer's response is always identical in every direction.

  3. C

    Chain orientation and the balance of ordered and disordered regions can affect deformation and directional response.

11
Choose all
1 point

Which processing routes can change a material's microstructure? Select all that apply.

  1. A

    Cooling can change microstructure.

  2. B

    Heat treatment can change microstructure.

  3. C

    Processing cannot affect the distribution of phases.

  4. D

    Deformation can change microstructure.

12
Choose one
1 point

A metal's microstructure contains features that obstruct dislocation motion. What effect can this have on its strength?

  1. A

    Obstructing dislocation motion raises the stress needed for continued deformation, which can increase strength.

  2. B

    Obstructing dislocation motion removes all grain boundaries and reduces strength.

  3. C

    Dislocations prevent metals from undergoing permanent deformation.

13
Open ended
1 point

Explain how processing can affect a material's performance by changing its microstructure. Include one example of a microstructural feature and how it influences deformation or failure.

14
Choose one
1 point

Which description best explains how different bond strengths can coexist in a polymer?

  1. A

    Weak attractions hold atoms together along each chain, while strong bonds act only between chains.

  2. B

    Strong bonds can link atoms along a chain, while weaker attractions can act between chains.

  3. C

    All bonds in a polymer are equally strong and have the same role.

15
Choose one
1 point

What is the smallest repeating description that defines a crystal structure?

  1. A

    Grain boundary

  2. B

    Unit cell

  3. C

    Interstitial

  4. D

    Texture

16
True or false
1 point

A glass lacks the long-range repeating order found in a crystal.

  1. A

    True

  2. B

    False

17
Written response
1 point

What is the term for a point defect in which an atom is missing from a crystal site?

18
Choose one
1 point

A polymer has strong bonds along its chains but weaker attractions between chains. Which interpretation best explains this bonding arrangement?

  1. A

    Weak attractions hold the atoms along each chain, while covalent bonds connect the chains.

  2. B

    Metallic bonds connect the chains and allow electrons to move between them.

  3. C

    Strong bonds hold atoms along each chain, while weaker attractions act between chains.

  4. D

    Ionic bonds between chains prevent the polymer from deforming.

19
Choose one
1 point

A polycrystalline component has many grains with a shared preferred orientation. What consequence should be considered when predicting its behavior?

  1. A

    The material has a texture that can make its behavior direction-dependent.

  2. B

    The material must be amorphous because its grains have consistent orientations.

  3. C

    The material has vacancies that align to form a unit cell.

  4. D

    The material has a single grain, so its behavior is necessarily the same in all directions.

20
Written response
1 point

A manufacturer deliberately adds impurities to a semiconductor to tune its properties. What is this process called?