Phase Changes

TRUE OR FALSE: Matter can switch between the three phases of solid, liquid, and gas by gaining or losing heat.

• True
• False

Heat is released.

• Endothermic
• Exothermic

Heat is absorbed.

• Endothermic
• Exothermic

Solid --> Liquid

• Evaporation
• Condensation
• Fusion

• Sublimation

Liquid --> Gas

• Vaporization

• Condensation
• Freezing
• Melting

Solid --> Gas

• Sublimation
• Condensation
• Evaporation
• Freezing

Gas --> Liquid

• Condensation
• Evaporation
• Sublimation
• Freezing

Liquid --> Solid

• Evaporation
• Sublimation
• Freezing
• Condensation

Gas --> Solid

• Sublimation
• Deposition
• Condensation
• Evaporation

Decide if each phase change is Endothermic or Exothermic.

Groups:

(a) Endothermic

,

(b) Exothermic

• Melting/Fusion

• Freezing

• Condensation

• Vaporization/Boiling

• Deposition

• Sublimation