Phase Changes Question Bank

What happens to the attractive forces between molecules when a material is heated?

• They become stronger

• They remain unchanged

• They break

• They multiply

Which of the following are examples of condensation?

• Water droplets on a cold soda can

• Dew on grass in the morning

• Steamed up mirror after a hot bath

• Clouds in the sky

• Ice forming on a lake

Which statements about state changes are true?

• The mass of a substance changes during a state change

• The density of a substance can change during a state change

• When ice melts, the resulting water weighs less

• Heating always causes a substance to change state

• Cooling can cause a gas to turn into a liquid

When a liquid changes to a gas at the surface, it's called ​ ​ (a)   , while the same change throughout the liquid is called ​ (b)   .

• evaporation
• boiling
• melting
• condensation
• freezing

Match the term with its correct definition:

• Melting

• Solid to gas

• Vaporization

• Liquid to gas

• Condensation

• Liquid to solid

• Sublimation

• Solid to liquid

• Freezing

• Gas to liquid

Tags

NGSS.MS-PS1-4

Categorize the following into their appropriate phase change

Groups:

(a) Melting

,

(b) Freezing

,

(c) Vaporization

,

(d) Condensation

• Liquid --> gas

• 
• liquid --> solid

• water becoming steam

• 
• steam forming water droplets

• 
• ice cube turning into water

• solid --> liquid

• gas --> liquid

• water turning into ice

• 

When a substance changes state, its ​ (a)   remains the same, while its ​ (b)   may change.

• color
• qualitative obsercvation
• volume
• mass

Label the diagram with the appropriate word to describe changing the state of matter.

d

e

f

g

c

a

freezing

sublimation

deposition

melting

condensation

imitation

evaporation

At Halloween, some people use dry ice to create a fog effect. The dry ice is changing from a​ ​ (a)   to a ​ (b)   . This state of matter change is called ​​ (c)   .​

• gas
• evaporation
• solid
• condensation
• sublimation
• liquid

label

d

e

g

h

i

f

c

b

a

freezing

heat lost

liquid

heat added

melting

solid

gas

vaporization

condenstation