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QUIZ 1 PHY351

Total questions: 30

Worksheet time: 1hrs 3mins

Name
Class
Date
1.
This type of material has a low melting point
a)
ceramic
b)
polymer
c)
glass
d)
metal
2.
Material science includes
a)
searching for new materials.
b)
modifying materials.
c)
understanding properties of materials.
d)
All choices
3.
This type of material is made up of nonmetals
a)
metal
b)
polymer
c)
compound
d)
ceramic
4.
If you have a material that can conduct electricity well it is probably a...
a)
Metalloid
b)
Matter
c)
Non-metal
d)
Metal
5.
What is an example of a material that can be considered both ceramic and composite?
a)
Leather Footballs
b)
Steel Beams
c)
Concrete mixed with Volcanic Ash
d)
Concrete made with Oyster Shells
6.
Which of the following is not an alloy?
a)
Brass
b)
Tin
c)
Stainless Steel
d)
Bronze
7.

Which of the following is NOT a property of ionic compounds?

a)

They conduct electricity when molten

b)

They conduct electricity when in solution

c)

They have high boiling points

d)

They are insoluble in water

8.
How many valence electrons does hydrogen have?
a)
1
b)
2
c)
3
d)
4
9.
A(n) _________ is an ion with a positive (+) charge.
a)
anion
b)
cation
c)
ion
d)
solute
10.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
11.
Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?
a)
There are 2 bromide ions for every magnesium ion
b)
Bromide has a 2- charge
c)
Bromide has a 2+ charge
d)
There are 2 magnesium ions to every bromide ion
12.
In what form can an ionic compound conduct electricity?
a)
when dissolved in water
b)
as a solid
c)
as a crystal
d)
when warmed slightly
13.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
14.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
15.

Which of the following is a covalent bonding?

a)

MgS

b)

NaCl

c)

CH4

d)

LiBr

16.

Which of the following is a covalent bonding?

a)

MgS

b)

NaCl

c)

CH4

d)

LiBr

17.
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.
18.
At room temperature, most metals are
a)
liquid
b)
solid
c)
gas
d)
an alloy
19.
An alloy is a mixture of two or more elements, of which at least one is a metal.
a)
 true
b)
false
20.

Give number of atom/s in simple cubic (SC).

a)

0

b)

1

c)

2

d)

4

21.

Give number of atom/s in BCC.

a)

0

b)

1

c)

2

d)

4

22.

Give number of atom/s in FCC.

a)

2

b)

4

c)

6

d)

8

23.

Give number of atom/s in HCP.

a)

2

b)

4

c)

6

d)

8

24.

Atomic packing factor (APF) for BCC.

a)

74%

b)

68%

c)

0.68

d)

0.52

25.

Atomic packing factor (APF) for FCC.

a)

74%

b)

52%

c)

0.68

d)

0.74

26.
This means the particles that make a mineral line up in a pattern that repeats over and over again.
a)
Chemical Composition
b)
Crystal Structure
c)
Fracture
d)
Solid
27.

What is a crystal?

a)

A pure material that can’t be changed.

b)

Material with a regular,repeating arrangement of atoms.

c)

A foggy like material.

28.

What is crystallography?

a)

Study of cells

b)

Study of earth

c)

Study of oceans

d)

Study of crystals

29.

What mineral crystal structure is this?

a)

Hexagonal

b)

Tetragonal

c)

Cubic

d)

Triclinic

30.
This type of material is a good conductor of electricity?
a)
polymer
b)
metal
c)
ceramic
d)
glass

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