Chapter 11 (section 5)

Question 1

The higher the temperature, the ____ the average energy of the collection of molecules.

Answer 1

Greater

Question 2

What is the transition from liquid to gas is called?

Answer 2

Vaporization

Question 3

What is the transition from gas to liquid called?

Answer 3

Condensation

Question 4

Define vaporization

Answer 4

The phase transition from liquid to gas

Question 5

Define condensation

Answer 5

The phase transition fomr gas to liquid

Question 6

Water evaporates faster if the the surface area is ______.

Answer 6

greater

Question 7

Define volatile

Answer 7

Tending to vaporize easily

Question 8

Define nonvolatile

Answer 8

No easily vapourized

Question 9

Liquids that vaporize easily are called ____, and liquids that do not vaporize easily are called _______.

Answer 9

volatile

nonvolatile

Question 10

The rate of vaporization increases with _____ temperature.

Answer 10

increasing

Question 11

The rate of vaporization increases with _____ surface area.

Answer 11

increasing

Question 12

The rate of vaporization increases with ______ strength of intermolecular forces

Answer 12

decreasing

Question 13

Vaporization is an _____process.

Answer 13

endothermic

Question 14

Condensation is an _____ process.

Answer 14

exothermic

Question 15

Define heat of vaporization

Answer 15

The amount of heat required to vaporize one mole of liquid to a gas

Question 16

Define dynamic equilibrium

Answer 16

The point at which the rate of the reverse reaction or process equals the rate of the forward reaction or process

Question 17

Define vapor pressure

Answer 17

The partial pressure of a vapor in dynamic equilibrium with its liquid

Question 18

When a system in dynamic equilibrium is disturbed, the system responds so as to…?

Answer 18

minimize the disturbance and return to a state of equilibrium

Question 19

Define boiling point

Answer 19

The temperature at which the vapour pressure of a liquid equals the external pressure

Question 20

The ____ ____ of a liquid is the temperature at which its vapor pressure equals the external pressure.

Answer 20

boiling point

Question 21

When a liquid reaches its boiling point where do molecules break free from?

Answer 21

The interior of the liquid as well as the surface

Question 22

Define normal boiling point

Answer 22

The temperature at which the vapour pressure of a liquid equals 1 atm or 760 Torr

Question 23

The ____ _____ ____ of a liquid is the temperature at which its vapor pressure equals 1.01325 bar (1 atm)

Answer 23

normal boiling point

Question 24

define standard boiling point

Answer 24

The temperature at which the vapour pressure of a liquid equals 1 bar

Question 25

The ____ ____ ____ is the temperature at which the vapour pressure equals 1 bar

Answer 25

standard boiling point

Question 26

Once the boiling point has been reached can the temperature of the liquid increase?

Answer 26

No. Additional heating only causes a more rapid boiling.

Question 27

Define critical temperature (Tc)

Answer 27

The temperature abover which a liquid cannot exist, regardless of pressure

Question 28

Define critical pressure (Pc)

Answer 28

The pressure required to bring about to bring about a transition to a liquid at the critical temperature