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Phase Diagram

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

This phase diagram belongs to?

a)

Carbon dioxide

b)

Oxygen

c)

Water

d)

Supercritical fluid

2.

What is the state of matter at Y?

a)

Solid

b)

Liquid

c)

Gas

d)

Supercritical fluid

3.

What is the state of matter at X?

a)

Solid

b)

Liquid

c)

Gas

d)

Supercritical fluid

4.

What is the state of matter at Z?

a)

Solid

b)

Liquid

c)

Gas

d)

Supercritical fluid

5.

What is point A?

a)

Triple point

b)

Critical point

c)

Equilibrium point

d)

Normal melting point

6.

Water exists as a _____________ at 3 mmHg and 50 °C.

a)

Solid

b)

Liquid

c)

Gas

d)

Supercritical fluid

7.

At 10 atm, dry ice is heated from -100 °C to 30 °C. What changes occur?

a)

Freezing, then condensation

b)

Melting only

c)

Sublimation only

d)

Melting, then boiling

8.

The pressure is increased on a sample of water at 0 °C from 0 mmHg to 800 mmHg. In order, what changes occur?

a)

Deposition then melting

b)

Sublimation then melting

c)

Condensation then freezing

d)

Deposition then freezing

9.

Water exists as a _____________ at 700 mmHg and 50 °C.

a)

Solid

b)

Liquid

c)

Gas

d)

Supercritical fluid

10.

Describe phase changes that occurs at letter B?

a)

Liquid to solid

b)

Liquid, solid-liquid equilibrium to solid

c)

Solid to liquid

d)

Vapour to liquid