wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Liquids

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.

Substances that can flow are referred to as .................

a)

fluids.

b)

solids.

c)

plasma.

2.

The ability of ............................ to flow allows them to conform to the shape of their containers.

(two choices)

a)

gases

b)

liquids

c)

solids

3.

The interplay between the disruptive motions of particles in a liquid and the attractions among the particles determines the physical properties of liquids.

a)

True

b)

False

4.

Intermolecular attractions reduce the amount of space between the particles in a liquid. Thus, liquids are much ..................... gases.

a)

less dense than

b)

more dense than

c)

same as

5.

Known as condensed states of matter

a)

Liquids

b)

solids

c)

gases

6.

In ............... system, molecules that evaporate can escape from the system.

a)

an isolated

b)

a closed

c)

an open

7.

In a closed system, the molecules can escape.

a)

True

b)

False

8.

The conversion of a .............................. is called vaporization.

a)

liquid to a gas or vapor

b)

liquid to a solid

c)

solid to a gas or vapor

9.

When vaporization occurs at the surface of a liquid that is called boiling.

a)

True

b)

False

10.

During ........................................, only those molecules with a certain minimum kinetic energy can escape from the surface of the liquid.

a)

freezing

b)

condensation

c)

evaporation

11.

A measure of the force exerted by a ....................... is called vapor pressure.

a)

gas inside a liquid

b)

gas above a liquid

c)

gas above a solid

12.

In a system at constant vapor pressure, a dynamic equilibrium exists between the vapor and the liquid.

a)

True

b)

False

13.

An increase in the temperature of a contained liquid .................... the vapor pressure.

a)

increases

b)

decreases

c)

doesn't affect

14.

The vapor pressure of a liquid can be determined with a device called a ..................................

a)

thermometer

b)

manometer

c)

voltmeter

15.

The rate of evaporation of a liquid from an open container ....................... as the liquid is heated.

a)

increases

b)

decreases

c)

stays the same

16.

When a liquid is heated to a temperature at which particles throughout the liquid have enough kinetic energy to vaporize, the liquid begins to .............................

a)

freeze

b)

melt

c)

boil

17.

.................................. is the temperature at which the vapor pressure of the liquid is just equal to the external pressure on the liquid.

a)

The boiling point (bp)

b)

The melting point (mp)

c)

The freezing point (fp)

18.

Liquid boils when its vapor pressure is equal to the external pressure.

a)

True

b)

False

19.

liquids always boil at the same temperature

a)

True

b)

False

20.

Although the vapor has the same average kinetic energy as the liquid, its potential energy (or stored energy) is ..........................

a)

much lower

b)

much higher

21.

The normal boiling point is defined as the boiling point of a liquid at a pressure of ................

a)

101.3 kPa.

b)

101.3 Pa.

c)

101.3 atm.