Chapter 1 Flashcards

1
Q

Losing an electron makes it electropositive (positive ion)

True or False?

A

True

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2
Q

_________________ alter a material’s properties in a controlled manner to produce components of products.

A

Manufacturing Processes

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3
Q

Helium has greater ionization energy than Hydrogen.

True or False?

A

True

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4
Q

Polymeric materials that are formed into a variety of three-dimensional shapes; large molecules (bulky) ; molecules are not compact (low density) ; polymers are flexible

A

Plastics

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5
Q

Production is performed on a start-and- stop basis, such as for the manufacture of made-to-order products.

A

Intermittent Production System

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6
Q

It has an electrical conductivity value falling between that of a conductor and an insulator.

A

Semiconductors

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7
Q

The process of extrusion belongs to what category of shaping process

A

Deformation Process

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8
Q

Starting material is used and no subsequent machining is required to achieve final part geometry

A

Net shape Processes

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9
Q

Strength, toughness, ductility, hardness, elasticity, fatigue, and creep belong to what property ?

A

Mechanical properties

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10
Q

It is the property of a material that shows little or no plastic deformation before fracture when a force is applied.

A

brittleness

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11
Q

Type of bonding in which electrons are shared between atoms in their outmost shell to become stable.

A

Covalent

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12
Q

atoms are located at regular and recurring positions in three dimension

A

Crystalline Structures

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13
Q

In _________ bonding , there is sharing of outer shell electrons by all atoms to form a general electron cloud that permeates the entire block

A

Metallic

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14
Q

Such materials which only melt a very high temperatures are called _____ materials.

A

fusibility

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15
Q

Sodium has larger atomic radius than hydrogen

True or False?

A

True

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16
Q

Strength is the ability of a material to resist applied forces without fracturing.
True or False?

A

True

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17
Q

_____ is defined as the gradual extension of a material over a long period of time whilst the applied load is kept constant.

18
Q

The resistance of magnetic circuit is referred to as

A

Reluctance

19
Q

Surface processing that refers to mechanical working such as sand blasting, and physical processes like diffusion

A

Surface Treatments

20
Q

This is the ease with which materials will melt.

A

Fusibility

21
Q

Medium production quantity ranges

A

100 to 10,000 units

22
Q

These includes such properties as density, and the properties displayed when a force is applied to a material, e.g. yield strength, strength, stiffness,hardness, toughness

A

Mechanical properties

23
Q

Examples of this classification of industry are banking, education, government, legal services, retail trade, transportation

A

Tertiary industries

24
Q

Density, Thermal expansion, conductivity, specific heat, melting point, and electrical and magnetic properties are under _____ property

25
Low strength and high resistance to corrosion
Non-Ferrous Matals
26
It combines high production volume with high product variety.
Mass Customization
27
 The good magnetic conductors have low reluctance | True or false?
True
28
Gaining an electron (negative ion) – electropositive | True or false?
False
29
groups of atoms that are normally agglomerated together
Microscopic
30
The resistance of magnetic circuit is referred to as
Reluctance
31
It is the ability of a material to deform under load and return to its original size and shape when the load is removed.
Elasticity
32
metals and alloys containing a high proportion of the element iron.
Ferrous metals
33
starting material is a ductile/brittle solid, from which material is removed
Material Removal Processes
34
Basic structural unit of matter
Atoms
35
It is the ability of a material to withstand scratching (abrasion) or indentation by another hard body
Hardness
36
These are, for example, relevant in considerations of abrasion and wear, corrosion and solvent resistance
Surface Properties
37
strongest materials available and are used for applications where high strength is required at relatively low cost and where weight is not of primary importance.
Ferrous metals
38
Classification of industry that cultivates and exploits natural resources
Primary Industries
39
It is the state of a material which has been loaded beyond its elastic limit so as to cause the material to deform permanently.
Plasticity
40
starting material is a heated liquid that solidifies to form part geometry
Solidification Processes