1.3 Phase changes and Thermodynamics

Front

Exothermic

Back

Heat is removed from the system, lost to the surroundings.

Front

Endothermic

Back

The system absorbs heat from the surroundings.

Front

System

Back

The area of study.

Front

Surrounding

Back

Everything around the system.

Front

Ice melting

Back

Endothermic - the ice cube is absorbing the heat.

Front

Water freezing

Back

Exothermic - the water is losing heat to the surroundings.

Front

Endothermic or Exothermic

The system loses heat to the surrounding

Back

Exothermic

Front

Endothermic or Exothermic

The system gains heat from the surrounding

Back

Endothermic

Front

Condensation

Back

Gas molecules loses heat and form water droplets

Front

Evaporation

Back

Liquid molecules gain enough heat energy to break apart and become gas