Ch. 3 Evaluating Properties

Question 1

What is a phase?

Answer 1

• A quantity of matter that is homogenous throughout in both chemical composition and physical structure

Question 2

What is a pure substance?

Answer 2

• One that is uniform and invariable in chemical composition

Question 3

What is a saturation liquid?

Answer 3

• The moment the liquid becomes vapor

Question 4

What is saturation vapor?

Answer 4

• The moment all the liquid becomes vapor

Question 5

What is a critical point?

Answer 5

• The highest temperature both liquid and gas can coexist

Question 6

What is a vapor dome?

Answer 6

• The dome-shaped region composed of two-phases liquid-vapor states

Question 7

What is a subcooled liquid?

Answer 7

• along 1-f line

- The state is less than the saturation temperature at the given pressure

Question 8

What is saturation Temperature?

Answer 8

-The temperature at which a phase change takes place at a given pressure

Question 9

What is saturation pressure?

Answer 9

• Pressure that corresponds with the saturation temperature

Question 10

How is saturated liquid represented?

Answer 10

• f

Question 11

How is saturated liquid to saturated vapor denoted?

Answer 11

-f –> g

Question 12

How is a saturated vapor denoted?

Answer 12

• g

Question 13

What is Quanlity (x) ?

Answer 13

• Is a ratio for a two phase liquid-vapor mixture
• It is a ratio of vapor mass over the total mass
• Total mass is the mass of the liquid and vapor

Question 14

What type of pressure occurs when the piston moves freely?

Answer 14

• Constant pressure