MSE

Question 1

_________of a material have a profound influence on its properties and behavior.

Answer 1

Composition and the Structure

Question 2

molecules that make the material (microscopic)

Answer 2

Composition

Question 3

is a characteristic length or range of dimensions over which we are describing the properties of a material or the phenomena occurring in materials.

Answer 3

Length Scale

Question 4

is a small crystal or the material within which the arrangement of atoms and repeats in a particular fashion in all three dimensions.

Answer 4

grain

Question 5

solids short-range atomic arrangements

Answer 5

Amorphous

Question 6

solids short-range and long-range arrangements

Answer 6

Crystalline

Question 7

the arrangement of molecules inside the material (physical appearance)

Answer 7

Structure

Question 8

structure of a materal at a macroscopic level where the length scale is ~ > 100, 00 nm.

Answer 8

Macrostructure

Question 9

structure of material at a length-scale of ~10 to 1000 nm.

Answer 9

Microstructure

Question 10

the structure and properties of materials at a nano-scale or (~length-scale1-100nm)

Answer 10

Nanostructure

Question 11

• the atoms or ions show a particular order only over relatively short distance.

Answer 11

Short-range atomic arrangements,

Question 12

includes atoms and their arrangements, which constitute the matter.

Answer 12

Atomic structure

Question 13

a __________ is composed of a nucleus surrounded by electrons

Answer 13

atom

Question 14

___________of an element is equal to the number of electrons or protons in each atom.

Answer 14

atomic number

Question 15

equal to the average number of protons and neutrons

Answer 15

atomic mass

Question 16

4 quantum numbers

Answer 16

Principle quantum number
Azimuthal quantum number
magnetic quantum number
spin quantum number

Question 17

The energy level to which each electron belongs is determined by four quantum numbers.

Answer 17

Quantumn Numbers

Question 18

________________are the numbers in an atom that assign electrons to discrete energy levels.

Answer 18

Quantum Numbers

Question 19

___________________ is the number of electrons in an atom that participate in bonding or chemical reactions.

Answer 19

Valence

Question 20

_____________describes the tendency of an atom to gain an electron.

Answer 20

Electronegativity

Question 21

4 components of discipline on material science:

Answer 21

Processing
structure
Properties
performance

Question 22

-composed of metals and non-metallic elements
-alloys are arranged in an orderly manner
-ferrous and non-ferrous

Answer 22

Metals

Question 23

-compounds between metallic and non-metallic elements
-composed of nitrides, oxides and carbides

Answer 23

Ceramic

Question 24

-Plastic and rubber materials
-Low densities
-Carbon based organic materials
Weaker that most materials

Answer 24

Polymer

Question 25

-Composed of two or more materials
-Also incorporate the best characteristics of each of the components
-Has materials binder/ reinforcements
-Ex. Reinforced concrete, cork comp.,foam, aluminium honey comb, balsa, etc.

Answer 25

Composite

Question 26

-Used in high-technology applications/ advanced materials
-Typically traditional material whose properties have been enhanced
-Classifies to : semiconductors, biomaterials, smart materials and nano materials.

Answer 26

Advanced materials