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Worksheets

Engineering Materials

Total questions: 60

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

2.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

3.

Matter is built up of

a)

Solid liquid gas

b)

Atoms, Molecules , Radicals

c)

Plastic

d)

Small particles

4.
Subatomic particle that has no charge and is located in the nucleus of an atom.
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
5.
Anything that takes up space and has mass.
a)
Mass
b)
Proton
c)
Weight
d)
Matter
6.

Which type of bond results when one or more

valence electrons are transferred from one atom to

another?

a)

a polar covalent bond

b)

a nonpolar covalent bond

c)

an ionic bond

d)

a hydrogen bond

7.

What is in the nucleus of an atom?

a)

Neutrons and protons

b)

Protons

c)

Protons and Electrons

d)

Neutrons and Electrons

8.
Contains only one kind of atom.
a)
Element
b)
Compund
c)
Mixture
9.

Contains two or more different atoms combined

a)

Elements

b)

Compounds

c)

Mixtures

10.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
11.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
12.
Which is smallest
a)
Atom
b)
Electron
c)
Cell
d)
Molecule
13.

An interaction that holds two atoms together called?

a)

Chemical Bond

b)

Covalent Bond

c)

Ionic Bond

d)

Metallic Bond

14.

Typically, atoms are more stable when they are

a)

bonded together

b)

apart from each other

15.

Which type of bonding occurs between metal atoms, allowing them to conduct electricity?

a)

Ionic bonding

b)

Covalent bonding

c)

Metallic bonding

16.

Which type of bonding involves the sharing of pairs of electrons between atoms?

a)

Ionic bonding

b)

Covalent bonding

c)

Metallic bonding

17.

2. Ionic Bonding involves:

a)

The transfer of protons

b)

The transfer of neutrons

c)

The transfer of electrons

d)

None Of the above

18.

A bond between a metal and a nonmetal is called a(n)

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

transfer bond

19.

A bond between a nonmetal and a nonmetal is called a(n)

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

transfer bond

20.

Metallic bonds are formed between the atoms of metals and

a)

non-metals

b)

metals

c)

none of the above

d)

all of the above

21.
What is the basis of a metallic bond?
a)
the attraction of neutral metal atoms.
b)
the attraction between protons and neutrons.
c)
the attraction between positive metal ions and interlocking electrons.
d)
the attraction between positive metal ions and free floating electrons.
22.
What does malleable mean?
a)
able to be shaped
b)
will break easily
c)
can be used for wire
d)
is shiny
23.

long-range order exists

a)

Crystalline material

b)

Amorphous Material

24.

long-range atomic order is absent

a)

Crystalline material

b)

Amorphous Material

25.

The type of solid held together by bonds in which valence electrons move throughout the solid material is known as:

a)

amorphous solids

b)

covalent solids

c)

metallic solids

d)

ionic solids

26.

This type of soilds have ordered internal structures.

a)

Crystalline solids

b)

Amorphous solids

c)

Pseudo solids

d)

Supercooled liquids

27.

Amorphous solids have _______ structure

a)

Regular

b)

Linear

c)

Irregular

d)

Dendritic

28.

The crystal lattice has a _________ arrangement

a)

One-dimensional

b)

Two-dimensional

c)

Three-dimensional

d)

Four-dimensional

29.

What are the 4 main categories of materials?

a)

Polymers, composites, ceramics, metals

b)

Polymers, alloys, ceramics, metals

c)

Polymers, composites, alloys, metals

d)

Polymers, composites, ceramics, alloys

30.

Why are metals different from plastics?

a)

Metals have covalent bonds, while plastics have metallic bonds.

b)

Metals are formed by small monomers, while plastics have a crystalline structure.

c)

Metals are chemically bonded, while plastics have free electrons.

d)

Metals have a crystalline structure, while plastics are formed by small monomers.

31.

Which materials are used in micro engineering?

a)

micro processors

b)

Ceramics such as concrete and metals such as wrought steel

c)

Polymers and composites such as GRP, CFC

d)

Composites such as wood and metals such as wrought iron

32.

Which materials are used in aviation engineering?

a)

Ceramics such as concrete

b)

Composites such as carbon fibre and lightweight metals

c)

Polymers such as plastics

d)

Mild steel

33.

What types of bonds are in ceramics?

a)

Covalent and ionic bonds

b)

Metallic bonds

c)

Close compound bonds

d)

Hydrogen bonds

34.

What are cermets?

a)

Compounds of ceramic particles bonded with a metallic matrix.

b)

Compounds of metallic particles bonded with a ceramic matrix.

c)

Compounds of plastic particles bonded with a metallic matrix.

d)

Compounds of ceramic particles bonded with a plastic matrix.

35.
Grain boundary is a
a)
point defect
b)
surface defect
c)
line defect
d)
none
36.

Smallest repeating unit of crystal lattice

a)

Lattice site

b)

Unit cell

c)

Crystal lattice

d)

Lattice point

37.

What happens to the grain size of a metal when it is annealed at a higher temperature?

a)

The grains become smaller

b)

The grains become larger

c)

The grains remain the same size

d)

The grains disappear

38.

What is the relationship between grain size and mechanical properties?

a)

Smaller grains make the material stronger

b)

Larger grains make the material stronger

c)

Grain size has no effect on strength

d)

Grain size only affects ductility

39.

The cause of elasticity of a substance is

a)

deformation

b)

large internal restoring force

c)

low internal restoring force

d)

less distance between the molecules

40.

the feel or appearance of a surface or substance

a)

texture

b)

color

c)

strength

d)

uniformity

41.

determines how easy it is to roll or hammer out the material without breaking it apart

a)

bounce

b)

malleability

c)

strength

d)

uniformity

42.

a solid heterogeneous mixture of two or more substances that makes use of the properties of each component

a)

composite

b)

malleability

c)

strength

d)

uniformity

43.

Which material would work best for a car tire?

a)

rubber

b)

glass

c)

plastic

d)

paper

44.

Which of the following is not a smooth surface ?

a)

Mirror surface

b)

Tires of a car

c)

Surface of a wet soap

d)

Polished tiles

45.

Why sodium chloride can conduct electricity in its molten or aqueous state?

4 lines
46.

State two properties that iron, zinc and copper have in common.

4 lines
47.

Which are Physical Properties and which are Chemical Properties

Categorize the following

viscosity

conductivity

malleability

melting point

change in color

change in temperature

gas is formed

precipitate is formed

Physical Property
Chemical Property
48.

Mechanical Properties:

Select the mechanical properties of engineering materials.

a)

Strength

b)

Elasticity

c)

Ductility

d)

Hardness

e)

Availability

49.

Mechanical Properties -

What is the definition of strength?

a)

The ability of a material to withstand an applied load or force without failure and/or plastic deformation.

b)

How strong something is.

c)

A material that once bent, will bend back.

d)

The ability of a material to be stretched and drawn into a wire.

50.

Mechanical Properties -

What is the definition of elasticity?

a)

Any material that is made from an elastomer.

b)

The ability of a material to maintain its current form after undergoing load or force.

c)

The ability of a material to return to its original shape once the deforming load has been removed.

d)

A material that resists oxidisation.

51.

Mechanical Properties -

Ductility is?

a)

A material that is really hard.

b)

How ductile something is.

c)

The ability of a material to be stretched and drawn out into a wire with out failure or fracture.

d)

The malleability of a material.

52.

Mechanical Properties -

Define hardness.

a)

How hard a material is.

b)

A material that is really difficult to extract out of the ground.

c)

A materials ability to resist abrasion, scratching and surface indentation.

d)

A material that is really tough.

53.

Manufacturing Properties -

Select the properties below that affect manufacturing.

a)

Malleability

b)

Machinability

c)

Cost

d)

Sustainability

e)

Tensile Strength

54.

Manufacturing Properties -

Malleability is?

a)

metals only.

b)

A material that can be worked, hammered and pressed into shape without fracture.

c)

How malleable something is.

d)

Materials that come in liquid form.

55.

Manufacturing Properties -

Machinability is?

a)

Only appropriate for non ferrous alloys.

b)

A material that fits on a conventional machine.

c)

How machinable something is.

d)

A materials ability to be worked by a machine tool such as drill, lathe or miller.

56.

Manufacturing Properties -

Engineers cannot always pick the best material available. One of the reasons for this is cost. Select two important cost considerations with engineering materials.

a)

The cost to sell the material on should be high so the product appears to he luxurious.

b)

How expensive is the material to source, extract and purchase initially.

c)

Cost is not important so long as the customer is happy.

d)

Is the material expensive to work with. Does it require specialist tooling, machinery or safety measures.

57.

Manufacturing Properties -

Sustainability of a material is?

a)

A material that's environmental impact is significantly reduced or non existent when it is used and/or sourced.

b)

A material that can carry a lot of weight.

c)

The avoidance of a material to deplete (run out) with continued use at a present rate.

d)

A material that is durable.

58.

Manufacturing Properties -

Engineering companies need to try and use more sustainable materials.......Why?

a)

Using sustainable materials will improve their brand image and reputation.

b)

Companies can be penalised and fined for not complying with climate change regulations.

c)

Developing products that use non sustainable materials will have a reduced shelf life.

d)

Sustainable materials are stronger and less likely to corrode in the atmosphere.

59.

Which diagram shows the structure of an alloy?

a)

b)

c)

d)

60.
A metal which allows an electrical current to flow through is also known as being?
a)
Hard
b)
Malleable
c)
Conductive

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