Free Printable Phase Diagrams and Solids

1.

Which letter on the diagram represents a gas?

a)

A

b)

B

c)

C

d)

D

2.

Which letter on the diagram represents a liquid?

a)

A

b)

B

c)

C

d)

D

3.

What does point B represent?

a)

Triple point

b)

Critical point

c)

Equilibrium point

d)

Normal melting point

4.

Which letter on the diagram represents a solid?

a)

A

b)

B

c)

C

d)

D

5.

The temperature and pressure conditions at which the solid, liquid, and gas phases of a substance exist at the same time is called the

a)

Critical point

b)

Triple point

c)

Melting point

d)

Boiling point

6.

What is the normal melting point of this substance?

a)

150°C

b)

100°C

c)

-50°C

d)

0°C

7.

Which letter on the diagram represents the triple point?

a)

A

b)

B

c)

C

d)

D

8.

What is true regarding CO₂ for temperatures above 31°C?

a)

It does not exist

b)

It decomposes

c)

It cannot be condensed back into a liquid

d)

It is a plasma

9.

What is the normal melting point of this substance?

a)

40°C

b)

60°C

c)

100°C

d)

110°C

10.

What phase change occurs from F to E?

a)

Sublimation

b)

Deposition

c)

Melting

d)

Condensation

11.

The temperature and pressure at which the gas and liquid states of a substance become identical and form one phase is called the

a)

Critical point

b)

Triple point

c)

Melting point

d)

Boiling point

12.

What is the normal boiling point of this substance?

a)

40°C

b)

60°C

c)

100°C

d)

110°C

13.

What phase change occurs from C to D?

a)

Condensation

b)

Vaporization

c)

Melting

d)

Sublimation

14.

What phase would this substance be in at 0.5 atm of pressure and 100°C?

a)

Solid

b)

Liquid

c)

Gas

15.

What phase change occurs from E to C?

a)

Sublimation

b)

Freezing

c)

Melting

d)

Vaporization

16.

What phase would this substance be in at 1 atm of pressure and 80°C?

a)

Solid

b)

Liquid

c)

Gas

17.

Normal freezing/melting and boiling points occur at standard pressure, which is

a)

1 atm

b)

5 atm

c)

10 atm

d)

15 atm

18.

What is the normal boiling point of this substance?

a)

0°C

b)

100 °C

c)

-50°C

d)

150°C

19.

A metal sample crystallizes in a body-centered cubic (BCC) structure. If the edge length of the unit cell is 3.0 Å, what is the radius of the metal atom?

a)

1.0 Å

b)

1.3 Å

c)

1.5 Å

d)

2.3 Å

20.

A crystal lattice of a metal has a face-centered cubic (FCC) structure. If the edge length of the unit cell is 4.0 Å, what is the length of the body diagonal of the unit cell?

a)

4.0 Å

b)

4.0√2 Å

c)

4.0√3 Å

d)

8.0 Å

21.

A metal sample crystallizes in a simple cubic (SC) structure with an edge length of 2.0 Å. What is the density of the metal in g/cm³? (Assume that the molecular weight is 20 g/mol)

a)

a) 1.0 g/cm³

b)

b) 2.0 g/cm³

c)

c) 4.0 g/cm³

d)

d) 8.0 g/cm³

22.

The memory metal, nitinol, is an alloy of nickel and titanium. It is called a memory metal because after being deformed, a piece of nitinol wire will return to its original shape. The structure of nitinol consists of a simple cubic array of Ni atoms and an inner penetrating simple cubic array of Ti atoms. In the extended lattice, a Ti atom is found at the center of a cube of Ni atoms; the reverse is also true. Describe the unit cell for nitinol.

a)

BCC

b)

FCC

c)

FCB

d)

SC

23.

The memory metal, nitinol, is an alloy of nickel and titanium. It is called a memory metal because after being deformed, a piece of nitinol wire will return to its original shape. The structure of nitinol consists of a simple cubic array of Ni atoms and an inner penetrating simple cubic array of Ti atoms. In the extended lattice, a Ti atom is found at the center of a cube of Ni atoms; the reverse is also true. What is the empirical formula of nitinol?

a)

NiTi2

b)

NiTi4

c)

NiTi

d)

Ni4Ti

24.

The memory metal, nitinol, is an alloy of nickel and titanium. It is called a memory metal because after being deformed, a piece of nitinol wire will return to its original shape. The structure of nitinol consists of a simple cubic array of Ni atoms and an inner penetrating simple cubic array of Ti atoms. In the extended lattice, a Ti atom is found at the center of a cube of Ni atoms; the reverse is also true. What are the coordination numbers (number of nearest neighbors) of Ni and Ti in nitinol?

a)

4

b)

8

c)

6

d)

12

25.

The radius of gold is 144 pm, and the density is 19.32 g/cm3. Does elemental gold have a face-centered cubic structure or a body-centered cubic structure?

a)

Body-centered Cubic

b)

Face-centered Cubic

c)

Simple Cubic

d)

Non-Cubic

Phase Diagrams and Solids

Total questions: 25

Worksheet time: 20mins

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