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ENG1001B Tutorial Week 7

Total questions: 11

Worksheet time: 7mins

Name
Class
Date
1.

Which of the following properties will a crystalline material possess?

a)

ordered packing structure

b)

high bonding energy

c)

stability

d)

low density

2.

What structure does diamond have?

a)

crystalline

b)

polycrystalline

c)

amorphous

3.

What structure does glass have?

a)

crystalline

b)

polycrystalline

c)

amorphous

4.

Which of these terms is used to denote the smallest repeating entity of the crystalline structure?

a)

lattice

b)

unit cell

c)

coordination number

d)

packing factor

5.

What kind of structure is depicted in the above?

a)

SC

b)

FCC

c)

BCC

d)

HCP

6.

What kind of structure is denoted in the image?

a)

FCC

b)

BCC

c)

SC

d)

HCP

7.

The coordination number of a hexagonal closed packed structure is (a)   .

8.

The body-centred cubic structure has ___ atoms in the unit cell.

a)

1

b)

2

c)

3

d)

4

9.

Which crystalline structure has the highest atomic packing factor?

a)

SC

b)

BCC

c)

FCC

d)

HCP

10.

Which formula can be used to calculate the number of atoms in a HCP structure?

a)

Ni+Nf2+Nc6N_i+\frac{N_f}{2}+\frac{N_c}{6}

b)

Ni +Nf2+Nc8N_{i\ }+\frac{N_f}{2}+\frac{N_c}{8}

11.

A metallic material with a BCC structure will have material properties that are __________ in the unit cell and the material is likely to be _________ at the macroscopic level.

a)

isotropic, isotropic

b)

isotropic, anisotropic

c)

anisotropic, isotropic

d)

anisotropic, anisotropic